A child on roller skates pushes off against the wall with a force of 40N. How far must the child push themselves away from the wall (starting from rest), so that his final kinetic energy is 275J?

One parent is heterozygous dominant for dimples and the other parent is homozygous recessive. use the letter H and what is the percentage for dimples and no dimples?

If the only forces acting on a 2.0kg mass are F1 = (3i-8j) N and F2 = (5i+3j) N, what is the magnitude of the acceleration of the particle?

A large steel water storage tank with a diameter of 20 m is filled with water and is open to the atmosphere (1 atm = 101 kPa) at the top of the tank. If a small hole rusts through the side of the tank, 5.0 m below the surface of the water and 20.

A sample of a solid substance has a mass m and a density?0 at a temperature T0. (a) Find the density of the substance if its temperature is increased by an amount? T in terms of the coefficient of volume expansion?.

Describe another plant or animal in which you can observe wave motion

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.