When energy is absorbed in process, which type of reaction is it?

Question 5 options:

exothermic

endothermic

fusion

sublimation

A 5.0 MeV (kinetic energy) proton enters a 0.21 T field, in a plane perpendicular to the field. What is the radius of its path?

A certain car is capable of accelerating at a rate of 0.60 m/s^2. How long does it take for this car to go from a speed of 55mi/h to a speed of 60 mi/h? I know the answer is 3.7seconds! I am just confused on the steps to get the answer.

What has more thermal energy a small balloon or a large balloon

In what ways are plasmas similar to gases? What makes plasmas different than gases?

The reciprocal of frequency is

Is it possible to have motion in the absence of a net force?

There are 2 charged particles, A and B. You know that particle A is positively charged. When you place particle B next to particle A, then particle B starts moving away from particle A. What does this mean for particle B?

The speed of light is now to be defined 2.99792458x10^8 m/s express the speed of light to three significant figures five significant figures seven significant figures

An element that is a very reactive gas is most likely a member of what group?

Describe the concept of orbital motion as it relates to the earth., moon and sun