Physics, 07.03.2021 01:00 shetherealbrat
(Hurry please) A student drops a rubber ball onto a surface. Assume that
this is a closed system. The ball bounces, but each
successive bounce is shorter than the one before it.
Eventually, the ball comes to a stop.
Which statement provides evidence that supports the idea that energy is
conserved in this closed system?
A. The ball bounces many times, suggesting the energy is used up
efficiently
O B. The ball makes a sound with each bounce, suggesting that some
kinetic energy transformed into sound.
O C. The ball needs a push or pull to start moving, suggesting it needs
a constant input of energy.
OD. The ball moves through air, suggesting that the ball has
mechanical energy
Answers: 1
Physics, 22.06.2019 00:00, hlhunter11p8f0o0
An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?
Answers: 1
Physics, 22.06.2019 03:50, am2garcia5
A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c
Answers: 3
Physics, 22.06.2019 21:10, tednequamoore4307
Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp, max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?
Answers: 2
(Hurry please) A student drops a rubber ball onto a surface. Assume that
this is a closed system. T...
Physics, 16.04.2020 03:34
History, 16.04.2020 03:34