Ricardo and Maria conducted an experiment to test if the mass of a ball affects how fast it would roll down a ramp. They set up the experiment using a ramp and three balls of different masses. They tested each ball once and recorded their results. They concluded that the more mass a ball has, the faster it will roll down the ramp. Why is this experiment not reliable?


Their experiment was not controlled.


Their experiment did not test enough variables.


Their experiment was not performed multiple times.


Their experiment was not performed by multiple people.

Does liquid soap last longer than a solid piece of soap?

Bacteria from the fecal transplant can fill up the up the space in the gut,limiting the food and space for invading harmful bacteria.

Select the correct locations on the periodic table.
Which two elements have similar characteristics?

The image shows a portion of the periodic table. Which two elements have similar characteristics?

Element Periodic table of numbers for 8, 9, 10, 16, 17, and 18 are Oxygen orange color (15.9994), Fluorine red color (18.9984032), Neon Grey color (20.1797), Sulfur orange (32.065), Chlorine red (35.453) and Argon Grey (39.948).

A.
neon and fluorine
B.
chlorine and sulfur
C.
fluorine and chlorine
D.
oxygen and chlorine
E.
argon and fluorine

what is the net force required to give an automobile of mass 1600kg an acceleration of 4.5m/52?

Select the correct scientific notation form of this numeral using only 2 significant figures. 5,421,200.00 m

How does mercury find its way into our ecosystems?
a.) Found in paints
b.) Found in solder joints of copper
c.) Burning coal
d.) Insulation in older houses