An indicator that orients you when defining a motion is called the reference point. The reference point provides a fixed frame of reference for observing and describing the position, velocity, and acceleration of an object.
How can you explain the use of reference point?If you are describing the motion of a car on a highway, you can use the side of the road or a specific landmark as the reference point. By using a reference point, you can determine the position, velocity, and acceleration of the car.
How can you determine an object is in motion?An object is considered to be in motion if its position changes relative to a reference point over time. There are several ways to determine if an object is in motion like Observing its position, measuring its velocity and observing its acceleration.
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Whenever the net force on an object is zero, its acceleration _____.
(a) and velocity are the same
(b) is zero
(c) may be zero
(d) None of the above.
assuming that sea water is a 3.5 percent by mass solution of nacl in water, calculate its osmotic pressure at 20°c. the density of a 3.5% nacl solution at 20°c is 1.023 g/ml.
The osmotic pressure of the 3.5% NaCl solution at 20°C is 1.36 atm.
What is osmotic pressure?Osmotic pressure is the pressure that is required to be applied to a solution to prevent the flow of water across a semi-permeable membrane from the side of the solution with lower solute concentration to the higher solute concentration side.
What is the significance of osmotic pressure?Osmotic pressure is important in many biological processes, such as the transport of water across membranes. It is also important in industrial processes, such as water treatment, food preservation, and the production of various products, like pharmaceuticals and cosmetics.
First, we need to convert the concentration of the solution from percent by mass to molarity:
3.5% NaCl by mass = (3.5 g NaCl/100 g solution) / (58.44 g/mol NaCl) = 0.06 mol/L NaCl
Now, N = (0.06 mol/L)(0.0821 L atm/mol K)(293 K) = 1.36 atm
Therefore, the osmotic pressure of the 3.5% NaCl solution at 20°C is 1.36 atm.
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During fission, some of the nuclear mass is converted into
Select one:
a. critical mass.
b. energy.
c. heavier nuclei.
d. protons.
Answer: b. energy.
Explanation:
what is max, the maximum wavelength of the incident light that can cause electrons to be emitted from the metal?
an evil supervillian has launched a rocket from his/her submarine. the rocket's height, in meters above sea level, as a function of time, , in seconds, is given by find the time it takes for the rocket to reach it's maximum height. round your answer to three decimal places. seconds. what is the maximum height? round your answer to three decimal places. meters
The height of the drone, measured in feet high, as both a time interval t, until it reaches its highest point seconds. Round your response to 3 decimal places.
How do you determine an object's maximum height when it is thrown?A ball is thrown into the air with only an initial vertical component of 32 feet a second from a height of five feet. Calculate the ball's greatest height that use the vertical modelling method, h = -16t2 + materials were prepared + s, where va is the velocity of the object in metres & s is the elevation in feet.
What is the oldest height allowed?Most women's height won't boost after the ages of 18 to 20 even with a nutritious diet. The growth rate form birth to age is depicted in the graph below.20. As can be seen, between years 18 and 20, the growth lines are zero Your bones, more specifically your growth plates, are the cause of your height plateau.
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a distant star is moving away from the earth at 1/3 of the speed of light. standing on the star, the light will travel towards the earth at the speed of light. how fast will light be moving as measured on the earth?
Whenever a distant star is traveling away from the planet at a pace of 1/3 the speed of light, then speed of light will be moving as it is observed on Earth. The light will reach globe at the faster than light if it were on a star.
Does light imply it isn't heavy?Something that is light as an adjective is not heavy, onerous, or depressing. A discussion subject or a musical piece may both be light, just like a backpack. For instance, The weight is small, but the path is lengthy.
Who made light possible?Using a bank of battery and two charcoal rods, Humphry Davy showed the first blazing light to the National Institute in Great Britain. Arc lamps were used in the first electric streetlights in several places.
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what is one type of light that the sun emits but a light bulb does not?
The sun emits Ultra-violate light but a light bulb does not.
What is sun?A heated ball of incandescent gases at the centre of our solar system, the sun is a star. Beyond the distant Neptune and Pluto's orbits, it has a significant impact.
There wouldn't be any life on Earth without the sun's powerful energy and heat. Even though it is unique to us, the Milky Way galaxy is home to billions of stars similar to our sun. The Earth would be the size of a US coin if the sun were the height of a standard front door.
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a figure skater on ice spins on one foot. she pulls in her arms and her rotational speed increases.
As her arms close in, her angular speed rises as a result of an increase in potential energy. 2. Her moment of inertia drops while her angular momentum increases, causing her angular speed to rise.
What is speed?The speed at which an object's location changes in any direction. The distance travelled in relation to the time it took to travel that distance is how speed is defined. The most often used unit of speed in daily life is the kilometre per hour (km/h), or miles per hour in the US and the UK. The SI's unit of speed is indeed the metre per second (m/s) (mph).
What is speed and velocity?Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, velocity is a vector, whereas speed is a scalar value. speedometer, a tool that displays a car's speed in conjunction with
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cehgg how far does a plane fly in 15 seconds while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration?
The plane will travel a distance of 2175 meters while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration.
What is a change in acceleration?The rate at which velocity changes in relation to time is known as acceleration. It is a vector quantity that gauges the magnitude and direction of a change in velocity. It can be calculated as the velocity's time-dependent derivative or as the velocity change divided by the time-dependent change. The metric for acceleration is meters per second squared (m/).
The difference between two levels of acceleration, either at different times or in distinct directions, is referred to as a change in acceleration. According to mathematics, it can be described as the difference between final acceleration and initial acceleration, as shown by the equation:
Δa = a2 - a1
where "a" stands for the acceleration change, "a2" for the final acceleration, and "a1" for the starting acceleration.
distance = (initial velocity x time) + (1/2) x acceleration x
acceleration = (final velocity - initial velocity) / time
we get:
acceleration = (75 - 145) / 15 = -5 m/
Now,
distance = (145 x 15) + (1/2) x (-5) x = 2175 m
Therefore, the plane will travel a distance of 2175 meters.
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Convertir 10 gramos a litros
Porque um litro tem 1000 gramas. então 10 grama se convertido em litros torna-se 0,01 Litros.
About LitroLitro é uma unidade de medida de volume. O litro não é uma das unidades international standards, mas está listado como uma das "unidades não international aceitas para uso com o international standards". A unidade SI para volume é o metro cúbico (m³). 1 l = 1 dm = 1000 cm = 1000 cc 1 ml = 1 cm = 1 cc O símbolo do litro é uma letra minúscula ou maiúscula l, L. A letra minúscula l (ℓ) também é usada.
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How much power is required to raise a 30 kg crate a vertical distance of 6 m in a time of 4 seconds?
when connected to a battery, a lightbulb glows brightly. if the battery is reversed and reconnected to the bulb, the bulb will glow when connected to a battery, a lightbulb glows brightly. if the battery is reversed and reconnected to the bulb, the bulb will glow brighter. dimmer. with the same brightness. not at all.
The correct option is A, When connected to a battery, a lightbulb glows brightly. if the battery is reversed and reconnected to the bulb, the bulb will glow when connected to a battery, a lightbulb glows brightly. if the battery is reversed and reconnected to the bulb, the bulb will glow brighter.
A battery is a source of electrical electricity consisting of 1 or more electrochemical cells with outside connections for powering electrical gadgets. when a battery is presenting power, its superb terminal is the cathode and its negative terminal is the anode.
The terminal marked bad is the source of electrons so as to drift through an outside electric powered circuit to the fine terminal. whilst a battery is connected to an outside electric load, a redox reaction converts excessive-electricity reactants to lower-strength products, and the loose-electricity distinction is introduced to the outside circuit as electrical strength.
Traditionally the term "battery" mainly referred to a tool composed of more than one cells; however, the usage has advanced to encompass gadgets composed of a unmarried mobile.
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Use the information below to answer question 9.
Since a Cessna-172 is a small airplane (750 kg) it may be easily blown
off course by a strong cross wind.
9.
An airplane is travelling at 27.8 m/s due north in calm air when
an east wind of 11.2 m/s begins. This blows the airplane off
course as shown in the diagram. Determine the plane's
momentum relative to the ground as it is being blown off
course. [2.25 x 104 kg m/s, 21.9° W of N]
P= mv
beg
3m
1.2m
direction
of travel
N
T
wind
direction
heading
2+
The momentum of the airplane is 2.24 * 10^4 Kgm/s
What is the momentum?Momentum is a concept in physics that describes the motion of an object. It is a vector quantity, meaning it has both magnitude and direction. The momentum of an object is equal to its mass multiplied by its velocity. In simple terms, momentum is a measure of how much "motion" an object has, taking into account both its mass and speed.
We would have to find the resultant of the velocity from
R = √(27.8)^2 + (11.2)^2
R = 29.97 m/s
We know that the momentum is mv
Momentum = 29.97 m/s * 750 kg
= 2.24 * 10^4 Kgm/s
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we can only do ideal calculations when we are at standard temperature and pressure. (True or False)
It is true that we can only perform ideal calculations under normal pressure and temperature.
What is the usual temperature and pressure?The nominal air temperature at sea level are referred to as STP, or normal temperature and pressure. The conditions are 0 °C and 1 atmosphere of pressure, respectively.
Why do scientists utilize normal pressure and temperature?It is now simpler to compare various measures for gasses, such as the number of molecules of gas in a certain volume. For scientists to be able to compare different sets of data in a meaningful way, a global standard for temperature and pressure must be established.
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what is the numerical setup for calculating the total amount of heat required to raise the temptaure of the h20
The amount of heat required to increase a unit quantity of a substance's temperature by one degree is the substance's specific heat capacity.
Q = w x Cp x ∆T. when the amount of heat added Q causes a change in temperature ∆T to a weight of substance W at a particular specific heat of material Cp.
What is specific heat capacity?The quantity of heat energy needed to raise a substance's temperature per unit of mass is known as specific heat capacity. A material's specific heat capacity is a physical characteristic. Since its value is inversely correlated with the size of the system under study, it is also an illustration of an extended feature.
The amount of heat required to raise the temperature per unit mass is known as specific heat capacity.
The heat in Joules required to increase the temperature of 1 gram of sample by 1 Kelvin or degree Celsius is often stated.
Water is an excellent temperature regulator since it has a very high specific heat capacity. Specific heat capacity in SI units (symbol: C)
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The amount of heat required to increase a unit quantity of a substance's temperature by one degree is the substance's specific heat capacity. the final answer is Q = w x Cp x ∆T.
What is specific heat capacity?The quantity of heat energy needed to raise a substance's temperature per unit of mass is known as specific heat capacity. A material's specific heat capacity is a physical characteristic. Since its value is inversely correlated with the size of the system under study, it is also an illustration of an extended feature.
The amount of heat required to raise the temperature per unit mass is known as specific heat capacity.
The heat in Joules required to increase the temperature of 1 gram of sample by 1 Kelvin or degree Celsius is often stated.
Water is an excellent temperature regulator since it has a very high specific heat capacity. Specific heat capacity in SI units (symbol: C)
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Cities can reduce earthquake damage by
Answer:
Adaptation – Develop post disaster response plans and operational redundancy to speed recovery time
Avoidance – Reduce risk by structural/nonstructural retrofitting, or lease/buy more resilient properties
Assignment – Transferring the risk to others through insurance
a car is driving down a flat road at constant velocity. what can you say about the net force acting on the car?
The net force acting on the car is zero.
Why is the net force acting is zero?The automobile driving to the right at a constant speed has a constant velocity. There is no acceleration. The overall force applied to the car is zero.To keep the car moving at a constant speed, the net force acting on it should be zero. The force applied by the engine to maintain velocity should be equal to the total frictional force exerted on the vehicle.
The net force in mechanics is the vector sum of forces exerted on a particle or object. The net force is a single force that cancels out the effect of the original forces on the motion of the particle. It causes the particle to accelerate at the same rate as all of the actual forces combined, as indicated by Newton's second law of motion.
It is possible to calculate the torque associated with the point of application of a net force in order to keep the object's jets moving under the original system of forces. Its related torque, the net force, becomes the resultant force and has the same influence on the object's rotational motion as all actual forces combined.
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1. use your own words and captured images from the simulation to show you can measure: a. wavelength of longest wave possible b. wavelength of shortest wave possible c. height of tallest wave possible
To measure the wavelength of the longest and shortest wave possible, you can use the oscilloscope to observe the waveform. Correct answer: Option A and B.
You can then measure the wavelength by the distance between two adjacent peaks or troughs. Similarly, to measure the height of the tallest wave possible, you can measure the amplitude of the waveform, which is the difference between the peak and the trough.
An oscilloscope is a type of electronic test equipment used to measure voltage over time. It is used to display waveforms of electrical signals, which can help determine the frequency, amplitude, rise time, and other characteristics of the signal. The oscilloscope consists of a display, a set of inputs, and horizontal and vertical control knobs.
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an egg is thrown nearly vertically upward from a point near the cornice of a tall building. the egg just misses the cornice on the way down and passes a point 30.0 m below its starting point 5.00 s after it leaves the thrower's hand. ignore air resistance. what is the initial speed of the egg?
The initial speed of the egg is calculated to be approximately 29.6 m/s.
What is speed?Rate of change of position of any object in any direction is called speed.
We use following kinematic equation to find initial velocity of the egg:
h = vi * t + (1/2) * g * t²,
where h is initial height of the egg, vi is initial velocity, t is time elapsed, and g is acceleration due to gravity (9.8 m/s²).
So, h = vi * t + (1/2) * g * t²
30.0 m = vi * 5.00 s + (1/2) * 9.8 m/s² * 5.00 s²
vi = 2 * (30.0 m - (1/2) * 9.8 m/s² * 5.00 s²) / 5.00 s = 29.6 m/s
So, the initial speed of the egg is approximately 29.6 m/s.
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levers rotate about an axis of rotation as a result of force being applied to them to cause their movement in the same direction as the resistance. true false
It is true that levers rotate about an axis of rotation as a result of force being applied to them to cause their movement in the same direction as the resistance.
Torque is a measure of the rotational force applied to an object about an axis of rotation. It is a vector quantity that is equal to the product of the force applied to the object and the perpendicular distance between the line of action of the force and the axis of rotation. Torque is responsible for causing an object to rotate, and the magnitude of the torque depends on both the size of the force applied and the distance from the axis of rotation. Torque is measured in units of Newton-meters (Nm) and can be calculated. Torques are important in many areas of engineering, including mechanical, electrical, and aerospace engineering, and play a role in a wide range of everyday activities, from turning a doorknob to cranking a winch.
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PLEASE I NEED HELP!! ON THIS QUESTION I HAVE TO TURN IT IN TODAY
Answer:
Scalar quantities
temperature, eg 10 degrees Celsius ('C)
mass, eg 5 kilograms (kg)
energy, eg 2,000 joules (J)
distance, eg 19 metres (m)
speed, eg 8 metres per second (m/s)
density, eg 1,500 kilograms per metre cubed
(kg/m)
Answer:
Greetings!!
In exception for
5N down (b/c it mentioned direction)15mph North (b/c it mentioned direction)4m/s (b/c velocity is a vector quantity)9.8m/s^2 (b/c acceleration is a vector quantity)All the rest are scalar quantities.
Hope it helps!!!
a hockey puck is hit on a frozen lake and starts moving with a speed of 12.8 m/s. exactly 5.90 s later, its speed is 7.50 m/s. the acceleration of gravity is 9.81 m/s 2 how far does the puck travel during this 5.90 s interval? answer in units of m. answer in units of m.
The average velocity of the puck during the 5.90 s interval can be calculated as the average of the initial velocity and the final velocity:
Thus the velocity will be,
v_avg = (v_initial + v_final) / 2
= (12.8 + 7.5) / 2
= 10.15 m/s
The distance traveled by the puck during this interval can be calculated as:
d = v_avg * t = 10.15 * 5.90 = 59.87 m
This is the distance traveled by the puck in a straight line assuming that it does not experience any forces other than gravity.
However, since the acceleration of gravity is 9.81 m/s^2,
the puck will experience a downward acceleration due to gravity, causing its path to be a parabolic arc.
The exact distance traveled by the puck will depend on the exact path it takes, which is beyond the scope of the information provided.
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Caused or operated by heat that has changed into different forms of energy is called?
Transformation is the process of converting heat directly or indirectly into other types of energy.
What happens during energy transformation?Energy transformation is the process through which energies change from one form to another. Energy is changed someplace every second of the day. Electrical, thermal, nuclear, mechanical, electromagnetic, acoustical, and chemical methods can all be used to express energy.
What three energy conversions are there?Electrical energy can be produced from chemical energy. Heat energy can be created from thermal energy. Electrical energy, potential energy, etc. can be created from mechanical energy.
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which type of eclipse occurs almost every 18 months?
Every 18 months or so, there are total solar eclipses, during which the sky becomes completely dark as the moon passes in front of the sun.
What is Eclipse used for?A free Java-based development environment called Eclipse is well-known for its plugins, which enable programmers to create and test code in other computer languages. This Eclipse Public License governs the distribution of Eclipse.
Why is eclipse so important?While more about a century ago, solar totality have been utilized to investigate the constitution of the Moon and its violent activities. Additionally, they have been employed to find evidence in favor of the general special relativity and to pinpoint new components. NASA scientists are still studying eclipses to discover more about the Sun, Venus, or our vacuum of space.
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a 46 kg bowling ball with a radius of 23 cm starts from rest at the top of an incline 3.0 m in height. find the translational speed of the bowling ball after it has rolled to the bottom of the incline. (assume that the ball is a uniform solid sphere.)the acceleration of gravity is 9.81 m/s 2 . answer in units of m/s. answer in units of m/s.
The acceleration (or velocity) of an object on Earth brought about by the gravity force when it is in free fall is referred to as "9.81 meters per second squared." There is no escape from gravity in outer space.
How is translational speed determined?d=vot+1/2a*t. The first equation divides an object's distance traveled into its velocity and acceleration components. A automobile traveling at 30 mph for two hours will cover 60 miles (30 mph x two hours = 60 miles), and this distance is related to beginning velocity.Loss in Potential Energy = Gain in Rotational Kinetic Energy + Gain in Translational Kinetic Energy
How fast is translation?The pace at which a linear position changes is known as translational velocity. The rate of change in each point is actually rotational position is what we refer to as the rigid body's rotational (angular) velocity, or v. Each point on the solid body has the same velocity component since all of its points spin at the same angle at the same time.
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the space shuttle travels at a speed of about 6.38 x 103 m/s. the blink of an astronaut's eye lasts about 116 ms. how many football fields (length
Using speed, distance, time relation, The Space Shuttle covers approximately 8 football fields in the blink of an astronaut's eye.
How do you determine speed?The speed of something or someone is how swiftly they are moving. You can determine something's average speed if you know how far it has traveled and how long it took to get there. Speed is determined by the formula: speed = distance time. Calculating the units for speed requires knowledge of the units for both time and distance.
The equation speed = distance time can be altered, just like any other equation.
The formula can be set up in one of three ways:
Distance is determined by time and speed.
Time and speed both affect distance.
Time = Speed x Distance
To compute one of the variables, we require the other two (speed, distance, or time).
For instance, we need to know the distance traveled and the speed at which movement occurs in order to calculate the travel time.
To find out how many football fields the shuttle covers in one blink of an eye, we need to divide the distance it travels in 116 ms by the length of one football field.
First, let's find the distance:
distance = speed x time
distance = 6.38 × m/s × 116 ms
distance = 738.88 m
Next, let's divide the distance by the length of a football field:
distance ÷ length of a football field
738.88 m ÷ 91.4 m = 8.09 football fields
So the Space Shuttle covers approximately 8 football fields in the blink of an astronaut's eye.
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Earth’s mass m is 5.979×10^24 kg, and its radius r is 6.376×106 m. what is the angular momentum of the earth?
Earth has a radius of 6.376106 m and a mass of 5.9791024 km=1.1961024kg is the value of the earth's angular momentum.
In everyday language, what does momentum mean?Simple motion is defined as momentum. As long as a moving object and it has mass, it has quantity in this situation, and momentum is measured. A thing lacks momentum if it stays still.
What does momentum mean, for instance?Whenever a body starts moving, its potential "power"—the amount of force it can exert on another body—is referred to as momentum. For instance, a baseball thrown quickly at high velocity and a bowling ball with a significant mass travelling very slowly can both have the same momentum.
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even though you should be careful in all measurements, which will create a bigger error in the calculated volume: an error in the diameter or an error in the length of the cylinder?
Nevertheless, you should exercise caution while taking any measurements because either an inaccuracy in the cylinder's diameter or its length will result in a larger error in the volume that is predicted.
How is diameter calculated in its entirety?Instance and Formula
2r d = diameter
r = radius
Thus, the radius multiplied by the diameter gives us the diameter formula: diameter = 2. D = 2r is an abbreviated form of this equation. However, if we are acquainted with circle's other dimensions—namely, its radius, circumference, or area—calculating the circle's diameter is simple.
Our approach to handling doubts and mistakes is to reduce them while also being honest regarding them by disclosing them honestly. If your data collection approach and method were correct, justified, and all potential sources of error were covered, you would never lose points for citing a significant final uncertainty.
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you learned in the last unit that there is a minimum speed at which a rollercoaster car can go around a loop and still maintain contact with the track. what is the minimum height h the car should be released so that it goes around the loop safely? assume friction is negligible.
The minimum height for the car to be safely released around a loop is determined by the minimum speed required for the car to remain in contact with the track, which is equal to the square root of the gravitational acceleration times the radius of the loop.
This is known as the "speed of a circular loop" formula, and it states that the minimum speed required for an object to go around a loop of radius "r" is equal to the square root of "g" (acceleration due to gravity) times "r".
In other words, the object must be traveling at a minimum velocity in order to remain in contact with the track and complete the loop without flying off. The height "h" at which the car is released is not a factor in this calculation, as it only affects the initial velocity of the car, which is not relevant to the minimum speed required to maintain contact with the track.
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Scientists and engineers are testing three different satellites orbiting Earth. The scientists are able to use sensors to determine the gravitational force experienced by each satellite. Some of the data from each of the orbiting satellites is shown in the table below. Distance Satellite from Earth (km) 36,000 36,000 36.000 X Y Z Mass (kg) 400 1.200 900 Gravitational Force (N) 120 360 270 Which statement best summarizes the information given? OA. The gravitational force exerted by Earth on the satellite depends on the satellite's mass. OB. The satellite with the least amount of mass is able to exert greater gravitational force on Earth than the others. OC. The gravitational force exerted by Earth changes the mass of each of the satellites. OD. The gravitational force on the satellite depends only on the distance from Earth at which it is travelling.
The statement that best summarizes the information given is: The gravitational force exerted by Earth on the satellite depends on the satellite's mass.
The correct option is A.
What is the relationship between gravitational force and mass?Gravitational force is the force of attraction that exists between two objects.
Gravitational force is directly proportional to the product of the masses of the objects and inversely proportional to the square of the distance of separation.
Greater gravitational forces will be used to attract heavier things since the gravitational force is directly proportional to the mass of both interacting objects. Therefore, the gravitational attraction between two objects grows as their respective masses do as well.
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