What is the power required to raise a 1.81x10^4 newton elevator 12.0 meters in 22.5 seconds?

a) 8.04x10^2 W

b) 9.65x10^3 W

c) 2.17x10^5W

d) 4.89x10^6W

A cube measuring 2cm on each side weighs 5g. Will it sink or float?

Y-axis of a velocity-time graph represents

Differentiate scalars & vectors?

A moving electron enters an electric field. The initial velocity of the electron is in the same direction as the electric field.

Which of these is an example of a chemical change? a. leaving cheese out to get moldy b. smelling sprayed perfume c. feeling ice melt on your skin d. crushing ice with a hammer

Which statement is true about the atom? A: it contains positive electrons, uncharged protons and negative protons. B: it contains uncharged neutrons, positive electrons and negative protons.

Steel objects can become temporary magnets because they are mainly composed of which element?

How long does it takes the sun to rotate the earth?

Which explains how winds move?

Why is it important to develop alternative energy sources