Physics, 12.08.2019 23:30 izzyisawesome5232
A17 kg body is moving through space in the positive direction of an x axis with a speed of 320 m/s when, due to an internal explosion, it breaks into three parts. one part, with a mass of 7.9 kg, moves away from the point of explosion with a speed of 190 m/s in the positive y direction. a second part, with a mass of 2.3 kg, moves in the negative x direction with a speed of 420 m/s. what are the (a) x-component and (b) y-component of the velocity of the third part? (c) how much energy is released in the explosion? ignore effects due to the gravitational force.
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Physics, 21.06.2019 23:30
1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts
Answers: 1
Physics, 22.06.2019 09:00
Sobre transformaçþes cĂclicas, sĂŁo feitas algumas afirmaçþes, determine quais estĂŁo corretas. i â a variação de energia interna em uma transformação cĂclica ĂŠ nula; ii â o trabalho, em uma transformação cĂclica, ĂŠ sempre positivo; iii â ao completar um ciclo, o gĂĄs tem a mesma temperatura com a qual começou a transformação; iv â uma transformação cĂclica ĂŠ, obrigatoriamente, composta de transformaçþes conhecidas, como adiabĂĄtica, isocĂłrica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
Physics, 22.06.2019 09:50
A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p
Answers: 1
A17 kg body is moving through space in the positive direction of an x axis with a speed of 320 m/s w...
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