trammellb91
16.10.2020 •
Physics
A child on a spinning playground ride is 0.36 m from the center of the ride. The centripetal force on the child is 19 N.
What is the mass of the child if the child has a tangential speed of 0.54 m/s?
3.7 kg
13 kg
23 kg
79 kg
Solved
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Ответ:
Lets say the side of the cube is x units in length.
The volume of the cube then is x * x * x = x^3 units cubed
After the sides are doubled, new length of cubes is 2x units
New volume is (2x)^3 = 8(x)^3 units cubed.
The change in volume = 8(x)^3 divide by x^3 to get 8.
So the volume of the cube increases 8 times.