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# A7.0-kg ball rolling at 2.0 m/s bumps into a pillow and stops in 0.58 s . part a) find the force exerted by the pillow. part b) how much force does the ball exert on the pillow?   ### Another question on Physics Physics, 22.06.2019 00:00
Name three different units of energy used to measure heat and describe what type of situations each is usually used. Physics, 22.06.2019 17:40
Aresistor rated at 250~\text{k}\omega250 kω is connected across two d cell batteries (each 1.50 v) in series, with a total voltage of 3.00 v. the manufacturer advertises that their resistors are within 5% of the rated value. what are the possible minimum current and maximum current through the resistor? Physics, 22.06.2019 19:30
A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively. Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 $$\rm kw$$. in the united states, emf amplitude in household circuits is $$\mathcal e_{\max}$$ = 170 $${\rm \; v}$$ and the $$\rm ac$$ oscillation rate is 60 $$\rm hz$$. part a what is the root-mean-square current through the heating element?
A7.0-kg ball rolling at 2.0 m/s bumps into a pillow and stops in 0.58 s . part a) find the force exe...
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