Which of the following materials can be charged: plastic, glass, metal? 

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j