You measure your caloric expenditure to be 483J as you raise a 25kg object from the ground to a final height of 1.5m. What is your efficiency?

Gunpowder residue is most likely to show up where on a shooters hands

What is the electric force acting between two charges of -0.0045 c and -0.0025 c that are 0.0060 m apart? use fe=kq1q2/r^2 and k = 9.00 x 10^9 n*m^2/c^2 a. 1.7 x 10^7 n b. -1.7 x 10^7 n c. -2.8 x 10^9 n d. 2.8 x 10^9 n

The mini-refrigerator fire was most likely caused by what type of wiring?