Mrs. Kucalaba downloaded some science music from the Internet onto her iPhone. She listened to the science music while she was building a deck in her mom’s yard. Which energy transformation explains how Mrs. Kucalaba was able to listen to music on her iPhone while building a deck in her mom’s yard?

Question 19 options:

Light energy was transformed to chemical energy

Sound energy was transformed to chemical energy

Chemical energy was transformed to sound energy

Chemical energy was transformed to heat energy

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?

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .