Physics, 01.08.2019 11:30 gomez36495983
To demonstrate an elastic collision, a teacher places a tennis ball on the floor. she wants to hit the ball so that the following conditions are satisfied. 1. after collision, the tennis ball should roll with the velocity of the ball that hit it 2. at the instant of collision, the ball that hit the tennis ball should stop. what ball should she use? golf ball, tennis ball, basketball, or bowling ball?
Answers: 1
Physics, 21.06.2019 13:40
The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions
Answers: 2
Physics, 22.06.2019 06:30
Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?
Answers: 1
Physics, 22.06.2019 13:30
6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
Physics, 22.06.2019 16:00
Which composition of water moves to begin a deepwater current?
Answers: 2
To demonstrate an elastic collision, a teacher places a tennis ball on the floor. she wants to hit t...
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