How much work is done in raising a 12.1 kg backpack from the floor to a shelf 1.64 m above the floor?

Stion 13 of 20 : select the best answer for the question. 13. if a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°c, what will be the volume at 50°c? a. 0.002021624 m3 b. 0.004021624 m3 c. 0.000010812 m3 d. 0.002010812 m3

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c