What process generates the energy released by the sun?
Select one:

A. Nuclear fission that takes place between uranium atoms.
B. Helium atoms joining together to form larger elements
such as iron.
C. Helium atoms burning.
D. Nuclear fusion that takes place between hydrogen atoms.

Which of the following is an example of units for speed

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).