Physics, 09.11.2019 06:31 Ksedro1998
The cooling curve above shows how the temperature of a sample varies with time as the sample goes through phase changes. the sample starts as a gas, and heat is removed at a constant rate. at which time does the sample contain the most liquid?
Answers: 3
Physics, 22.06.2019 01:00
Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be
Answers: 1
Physics, 22.06.2019 03:30
Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jayβs mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)
Answers: 1
Physics, 22.06.2019 07:30
Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponentβs 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?
Answers: 1
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