Abullet of mass m = 0.029 kg is fired with a speed of vi = 94.00 m/s and hits a block of mass m = 2.52 kg supported by two massless strings. the bullet emerges from the right side of the block with a speed of vf = 47.00 m/s. find the height to which the block rises.

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)

The texture of obsidian is best described as glassy.why does obsidian contain few or no mineral grains? by the way i put it under physics because that's what it's labeled as on my side.