Which of these statements are most likely correct about a weak nuclear force?

a. it binds electrons and protons protons
b. it binds protons and neutrons
c. it is an attractive force
d. it is a repulsive force

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

What part of the ear is names after tools, such as the hammer and the anvil?