Alight, inextensible cord passes over a light,
frictionless pulley with a radius of 12 cm. it
has a(n) 14 kg mass on the left and a(n)
2.5 kg mass on the right, both hanging freely.
initially their center of masses are a vertical
distance 3.1 m apart.
the acceleration of gravity is 9.8 m/s. at what rate are the two masses accelerating when they pass each other

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?

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Current from a charged capacitor lights a bulb. as time goes on the brightness of the