A reconnaissance plane flies 512 km away
from its base at 742 m/s, then flies back to its
base at 1113 m/s.
What is its average speed?
Answer in units of m/s.
Answer in units of m/s
The average speed of round trip is 1192.8 m/s
Average speed of the round trip is
2*994*1491/(994+1491)
= 1192.8 m/s
The overall distance the object covers in a given amount of time is its average speed. A scalar value represents the average speed. It has no direction and is indicated by the magnitude.The mean value of a body's speed over a period of time is its average speed. Since a moving body's speed is not constant over time and fluctuates, the average speed formula is required. The numbers of total time and total distance travelled can be used even with fluctuating speed.Learn more about average speed at:
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find the component form of the vector V (0,1) (6,7/2)
Answer:
I would interpret it to mean:
Vx = (6 - 0) = 6
Vy = (3.5 - 1) = 2.5
or V = (6, 2.5)
V refers to the vector itself and not its relative position in space
Part A
What is the instantaneous velocity of a freely falling object 5.0 s after it is released from a position of rest?
Express your answer to two significant figures and include the appropriate units.
v=
The instantaneous velocity of a freely falling object is 49.0 m/s
the instantaneous velocity is calculated by the first equation of the motion that is v = u + at here u = initial velocity and a is acceleration and t is time since its freely falling object the acceleration is acceleration due to gravity that is 9.8 m/s and the initial velocity is 0m /s the time given is 5 sec so putting it into equation 0+ 9.8X 5= 49.0 m/s
The instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of x with respect to t: v ( t ) = d d t x ( t ) . v ( t ) = d d t x ( t ) . Like average velocity, instantaneous velocity is a vector with dimension of length per time.
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The actual mass of a metal sphere was reported in the manual catalog to be 3.53 kg.
A group of 4 students were assigned to perform an experiment and measure the mass of the sphere each one of them using a different scale or balance.
Student 1 reported 3.6 kg
Student 2 reported 3.5 kg
Student 3 reported 3.12 kg
Student 4 reported 3.476 kg
Which of the four students reported the most precise measurement?
1. Student 1
2. Student 2
3. Student 3
4. Student 4
The student that gave the most precise measurement is student 2.
What is a precise measurement?A precise measurement is one that is close together especially when we have a replicate measurement. The measurements that are close together are said to be presence. A measurement is accurate when the measurement is quite close to the true value. Precision ad accuracy are very important in a measurement.
In this case, let us consider the measurement of each student;
Student 1 reported 3.6 kgStudent 2 reported 3.5 kgStudent 3 reported 3.12 kgStudent 4 reported 3.476 kgWe can see that the student that gave the most precise measurement is student 2.
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76. Two electric charges -6μC and
+6μC are placed respectively in two
points A and B distant of 1m apart. The
electric field is null at the point C:
A.Located in the middle of the
segment AB
B.Located outside segment AB at
1m from A.
C.Located outside segment AB at
1m from B
D.Outside the line AB
E.No answer is right.
The correct answer is option (A) Located in the middle of the segment AB the electric field is null at the point C .
When a positive and negative charge interact, their forces act in the same direction, from positive to negative. As a result, opposite charges attract each other: the electric field and forces generated by two electrical charges of opposite polarity.
The two charges are to each other.The electric field will not be zero between two opposite charges. For opposite charges, the point of zero electric fields will lie outside the system along the line joining attracted the two charges.The field is strongest where the lines are closest together. The electric field lines converge toward charge one and away from charge two, indicating that charge one is negative and charge two is positive.
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Is the following equation dimensionally correct?
P=√pgh.
where
P is pressure in units of Kg.m/s²/m².
p is density in units of Kg/m³.
g is gravitational acceleration in units of m/s².
h is height in units of m.
The correct answer is :
P = ρgh yields the hydrostatic pressure, which is accurate.
The pressure a liquid applies to nearby bodies when it is at rest is known as hydrostatic pressure.
Water at rest exerts a force known as hydrostatic pressure. It is caused by the water's continual pressure on the basement walls.
The force that blood applies to blood channel walls is a typical illustration of hydrostatic pressure.
Depending on the liquid's density ('ρ'), the height of the water column ('h'), and the acceleration caused by gravity ('g'), the hydrostatic pressure is indicated by the letter "P" of a liquid column.
Because of this, the parameters and the supplied equation P = gh are both accurate.
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the tension T in Newtons in the string of a yoyo of mass 0.001kg is give by the function of two variables (see equation in photo).
find the approximate change in T if R increases from 4cm to 4.1cm and r increases from 0.8cm to 0.9cm. use your answer to explain if the tension increases or decreases.
The change in the tension if the radii r changes from 4.0 cm to 4.1 cm, and R changed from 0.8 cm to 0.9 cm is negative, therefore, tension reduces.
How can the correct description of the change in the graph of the function be found?
Mass of the yoyo = 0.001 kg
Initial value of the spindle radius, R = 4 cm
Initial length of the radius of the yo–yo, r = 0.8 cm
The final values are;
R2 = 4.1 cm, r2 = 0.9 cm
Which gives;
[tex]T_{r \:R} = \frac{0.001 \cdot g \cdot R }{2 \cdot r^{2} + R^2} [/tex]
Which gives;
[tex]T_{{r _1 \:R _1 }} = \frac{0.001 \times 9.8 \times 0.04 }{2 \times 0.008^{2} + 0.04²} = \frac{49}{216} [/tex]
[tex]T_{{r _2 \:R _2 }} = \frac{0.001 \times 9.8 \times 0.041 }{2 \times 0.009^{2} + 0.041^2} = frac{2009}{9215} [/tex]
Therefore;
[tex] \Delta T_{{r \:R }} = frac{2009}{9215} - \frac{49}{216} = - \frac{17591}{1990440} [/tex]
Given that difference between the final and the initial states is negative, the the value of the tension decreases
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What is the mass of a 10.4 cm³ cube of lead.
The mass of a 10.4 cm³ is, approximately, 117.42 grams.
Explanation:Volume of the cube: 10.4 cm³
Now, let's look up the density of lead:
Density of lead: 11.29 g/cm³.
This value fo density tells us that 1 cm³ of lead has a mass of 11.29g. Hence, we can stablish the following rule of 3 to find the mass of our cube.
1 cm³ ----------------> 11.29 g
10.4 cm³------------> x
x= (10.4 cm³ ⋅ 11.29 g)/1 cm³
x= 117.42 g.
Conclusion.
The mass of a 10.4 cm³ is, approximately, 117.42 g.
How can urban or rural infrastructure play a role in a community recreation?
Urban or rural infrastructure can play an important role in a community recreation because these infrastructure is used by people of the community for the recreational purpose.
How can urban or rural infrastructure play a role in a community recreation?Urban Community:
The density of population and networks of activities, the cities contain publics buildings as well as government buildings which have organized religion, commerce, social interactions. So these peoples and the buildings provide the focus for communities.
The Urban infrastructure consists of gas distribution, urban transport, primary health services and many other things.
Rural Community:
Agriculture is the main fundamental need for the rural areas people which forms the basis of rural economy. A farmer has to perform various agriculture activities for which he needs the cooperation of his family and usually need a very large area for the farming.
So we can conclude that Urban or rural infrastructure can play an important role in a community recreation because these infrastructure is used by people of the community for the recreational purpose.
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2.819 to the nearest 10th's place.
Answer:
2.8 would be the correct answer as 1 rounds down
Raoul and Maria set out walking from their aunt's house. Raoul walks a certain distance straight east and then a certain distance straight north. A crow passing overhead starts from the same point as Raoul, but flies in a straight line. Raoul observes that the crow flies a total distance of 500 m in a direction 35° north of east to reach the same final point as Raoul. Maria starts from the same point as Raoul, but she walks first straight west and then straight south. Her final point is 700 m from the starting point in a direction that is 55° south of west. How far did Raoul walk on the east leg of his trip? How far on the north leg? Similarly, how far did Maria walk on the west leg and how far on the south leg? Express these quantities in terms of displacement vectors and their components, using a coordinate system with the +x axis pointing east and the +y axis pointing north.
Answer:
no entiendo tu pregunta
What is the total capacity in gallons of a rectangular tank 5 meters in height knowing that it will hold 200 liters per foot?
The total capacity in gallons of the rectangular tank is 866.58 gallons
How to find the total capacity in gallons of the rectangular tank?Since the rectangular tank is 5 meters in height knowing that it will hold 200 liters per foot, we need to know the total capacity of water it contains for the height of 5 meters.
Converting 5 m to feet, we have
Since 1 m = 3.28 ft, we have
5 m = 5 × 1 m = 5 × 3.28 ft = 16.4 ft
Since the height of the tank in feet is 16.4 ft and the tank holds 200 L/ft, then the total capacity of water in 16.4 ft is D = 200 L/ft × 16.4 ft
= 3280 L
To know the total capacity of the tank in gallons,we convert 3280 L to gallons
Since 1 L = 0.2642 gallons, converting 3280 L to gallons, we have
3280 L = 3280 × 1 L = 3280 × 0.2642 gallons
= 866.576 gallons
≡ 866.58 gallons
So, the total capacity in gallons of the rectangular tank is 866.58 gallons
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1. You are part of a new team of colleagues at work and you are trying to remember everyone's
name. What part of the brain would be responsible for making sure you know who everyone is?
a. Hippocampus
b. Hypothalamus
c. Amygdala
d. Thalamus
The part of the brain that would be responsible for making sure you know who everyone is Hippocampus; option A
What is the brain?The brain is the organ in the body which controls the function of other organs in the body.
The brain is made up of cells called neurons.
The brain is divide into three main parts namely:
the cerebrum,the brainstem, andthe cerebellumThe cerebrum consists of two cerebral hemispheres the outer layer called the cortex.
The brainstem consists of the medulla, pons, and midbrain.
The cerebellum consists of three lobes the anterior lobe, the posterior lobe and the flocculonodular lobe.
The hippocampus is part of the temporal lobe which controls recognition and dentification of people.
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what enables cellular customers to continue making voice calls and connect to the internet when away from home
Answer:
Voice over Internet Protocol (VoIP)
Explanation:
is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line.
Select the correct answer.
A force Fmaking an angle 9 with the horizontal is acting on an object resting on the table. Which statement Is true for the motion of sliding the
object on the table?
• A. It Is Independent of all the forces acting on the object.
O B. It depends only on the forces acting along the x-axis.
O C. It depends only on the forces acting along the y axis.
O D. It depends only on the normal force acting on the object.
O E. It depends only on the frictional force acting on the object.
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If a dolphin swims at 1.85 m/s, how far will the dolphin have traveled after 6.0 s?
The distance traveled by by the dolphin is determined as 11.1 m.
What is distance?The distance traveled by an object is the product of speed and time of motion of the object. It measures the total path covered by the object.
The distance traveled by by the dolphin is calculated as follows;
Distance = speed x time of motion
Distance = 1.85 m/s x 6 s
Distance = 11.1 m
Thus, the distance traveled by by the dolphin is determined as 11.1 m.
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Please refer to the picture.
The graph is displayed in the following attachment.
The graph shows that the answers to the problem are x = -1.2 and x = 1.7.
From the image, we may deduce that
The graph is displayed in the following attachment.
The graph shows that the answers to the problem are x = -1.2 and x = 1.7.
We must create the graph of the function for the given range of values based on the image (that is for values of x from -3 to 3)
We will first establish the function's table of values.
Values for the function x y -3 in a table 1.33 -2 2 -1 4 0 Definable
1 -4 2 -2\s3 -1.33
(The docx attachment provides a better view.)
Additionally, the function's graph (purple lines) is
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Carrie has experienced brain damage to her left hemisphere. She will most likely experience difficulty with which ability?
A) putting a puzzle together
B) recognizing faces
C)judging time and rhythm
D)understanding sarcasm and irony
5.
In 1934, the wind speed on Mt. Washington in New Hampshire reached a record high.
Suppose a very sturdy glider is launched in this wind, so that in 45s the glider reaches the
speed of the wind. If the glider undergoes constant acceleration of 2.29m/s², what is the
wind's speed? Assume the glider is initially at rest.
The Speed of wind will be 103.5 m/s.
It is stated in the question that a glider is launched into the wind and in 45 seconds it attains the speed of the wind. Also, It is given that it attains a constant acceleration of 2.29m/s² and it starts moving from a state of rest.
We know the relation between velocity, time, and acceleration can be represented by Newton's first equation: v = u + at
where, v = Final velocity, u = Initial velocity, a = Acceleration, and t = Time
In this case, we have to find the final velocity of the glider to know the speed of the wind, and u = 0, a = 2.29m/s², t = 45sec
Putting values in the equation we get :
=> v = 0 + (2.29)*45
=> v = 103.5
Hence, the Speed of wind will be 103.5 m/s
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Sasha is measuring the rate of heat energy given off by an incandescent light bulb. The theoretical value is 55.4 watts. Her measurement has a 2.17 error. Which of the following values may have been Sasha's measurement? (Choose all that apply)
A. 1.20 watts
B. 54.2watts
C.56.6watts
D.53.23watts
E. 57.57watts
The measurement of Sasha, given the data from the question is 57.57 watts (Option E)
How to determine Sasha's measurementThe following data were obtained from the question:
Theoretical value = 55.4 wattsAbsolute error = 2.17 wattsSasha' measurement =?To obtain Sasha's measurement, we shall determine the experimental measurement. This is illustrated below:
Absolute error = Experimental measure - theoretical measurement
2.17 = Experimental measure - 55.4
Collect like terms
Experimental measure = 2.17 + 55.4
Experimental measure = 57.57
Thus, we can conclude that Sasha' measurement is 57.57 watts (Option E)
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Which option best describes the average acceleration from 40 to 70 s?
C. The average acceleration is positive and smaller in magnitude than the initial acceleration.
What is average velocity?Average velocity is defined as the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs.
a = Δv/Δt
where;
Δv is change in velocityΔt is change in timea = (250 - 248) / (70 - 40)
a = 0.067 m/s²
Thus, we can conclude that the average acceleration is positive and smaller in magnitude than the initial acceleration.
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1. A bullet is fired into a tree trunk (Figure 1.12), striking it with an ini- tial velocity of 350 m/s. If the bullet penetrates the tree trunk to a depth of 8.0 cm and comes to rest, what is the acceleration of the bullet?
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If I stop applying a force to an object, will it continue to accelerate? Why?
Answer:
As long as the force is applied to a given object, it will to accelerate. Once the force is withdrawn, the object will continue to move at a constant velocity, according to the Law of Inertia.
Explanation:
You are asked to do an experiment to measure g. You set up a device that drops a metal ball from rest from a height of 1.650 meters. Using an accurate timing device that detects the release of the ball and it’s landing in the floor, you measure the average time of the falling ball to be 0.585 seconds. What do you measure the value of g as?
The value of g of the metal ball that falls from a height of 1.65 m at an average of 0.585 seconds is 4.82 m / s²
a = v / t
v = d / t
a = Acceleration
v = Velocity
d = Distance
t = Time
d = 1.65 m
t = 0.585 s
v = 1.65 / 0.585
v = 2.82 m / s
g = a = 2.82 / 0.585
g = 4.82 m / s²
Here the acceleration is called as g because the ball is falling vertically. That is why it is called as g ( Acceleration due to gravity )
Therefore, the value of g of the metal ball that falls from a height of 1.65 m at an average of 0.585 seconds is 4.82 m / s²
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If a rocket initially at rest accelerates at a rate of 49.3 m/s/s for 8.7 seconds, its speed will be
decimal place.
Answer:
428.9 m/s
Explanation:
Vf = at = 49.3 m/s^2 * 8.7 s = 428.9 m/s
II Two electrons are in the vicinity of a proton. The potential energy of the
proton is
-1.6 x 10-25 J. (a) What is the potential at the proton's position? (b) If one of
the electrons is 1.0 cm from the proton, what is the distance of the second
electron from the proton?
Please explain HOW to answer this(especially part B)
There are two electrons close to a proton. The proton's potential energy is
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
9.216 x 10^-8 N
q1 = 1.6 x 10^-19 C
q2 = - 1.6 x 10^-19 C
r = 5 x 10^-11 m
A source of electrostatic force is
F = k q1 q2 / r^2
F = (5 x 10-11)2 / (9 x 109 x 1.6 x 10-19 x 1.6 x 10-19)
F = 9.216 x 10^-8 N
Due to the nature of the charges being in opposition to one another, this force is appealing.
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what type of force os your answer in number 4?
The electromagnetic force, the weak nuclear force, the strong nuclear force, and gravity.
The strong force, weak force, electromagnetic force, and gravitational force are the four fundamental forces operating in the universe. They each operate within different parameters and have unique strengths. Although gravity has an infinite range, it is the weakest force. Although it has an infinite range, the electromagnetic force is much stronger than gravity. The weak and strong forces are dominant only at the level of subatomic particles and are only effective over very small distances. Even though it has a weaker name than gravity, the weak force is actually the weakest of the three. The strongest of the four fundamental interactions is the strong force, as its name suggests.
Actually, out of the four fundamental forces, gravity is the weakest. The four forces are the electromagnetic force, gravity, the weak nuclear force, and the strong nuclear force, in that order.
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A 200 kg car has a constant velocity of 40 m/s. Suddenly the driver steps on the
brakes, and the force of friction that slows down the car is 1,000 N. What is the
acceleration of the car?
Answer:
acceleration =Force/mass
a=1000/200=5m/s
A ball dropped from a window strikes the ground 2.71 seconds later. How high is the window above the ground?
[tex]s=36.52m[/tex]
Given ,
Time =2.71 second
We apply the formula
[tex]s=ut+12at^2[/tex]
[tex]u=0,t=2.73 \\a=g \\So, the \\height \\ s=36.52m[/tex]
When a body is lying on a horizontal surface, the object is subjected to a downward force due to the action of gravity. These gravitational forces always aim to attract the item, confirming the force's nature as an attractive force. Consider an object of mass "M" resting on a horizontal surface; the force exerted to the object by gravity is equal to the weight of the object "W." The acceleration owing to gravity, indicated as "g," is the acceleration by which an object is drawn towards the ground. As a result, Newton's second law states that when the values in the above connection are substituted.
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The space shuttle undergoes an acceleration of 53.9 m/s. How fast is it traveling at the end of 55.2 s?
It is traveling at the end of 55.2 s in the speed of 2975,28m/s
acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. In this instance, you requested the speed and provided the time, acceleration, and speed. Speed is calculated as follows: speed = distance * time. Knowing the units for distance and time is necessary to calculate the units for speed. Since acceleration is equal to time, multiplying the two numbers equals speed. The formula would be:
Acceleration x Time Equals Velocity
Velocity: 53.9 m/s2 x 55.2
= 2975,28 m/s
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