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A piece of lead [c = 128 J/(kg·C°)] is heated from 18.0 °C to 40.1 °C. The same amount of heat is added to a piece of copper [c = 387 J/(kg·C°)]. The mass and initial temperature of the copper are the same as for the lead. Determine the final temperature Tf of the copper.
It takes 18 minutes to fill a 1.2 m3 horse trough. It is filled with water from a hose with diameter 2 cm. What is the flow rate of the water
What is the coefficient of kinetic friction between the crate and the floor. what height will the stream of water strike.
Suppose a pulsar of mass 1.50 *10^30 kg and radius 20.0 km is spinning at the rate of 2.10 rev/s and is slowing down at the rate of 1.40*10^-15 rev/s^2. how long will it take the pulsar to come to a stop
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
you want the current amplitude through a inductor with an inductance of 4.10mh part of the circuitry for a radio
A 958 N Rocket is coming in for a vertical landing. It starts with a downward speed of 25 m/s, What must be the direction of the engine thrust force
Compute the amplitude and phase at the observation screen
how much work is done by the electric field as a third charge q3 = +2.19 nC is moved from point a to point b. (q1 = +9.41 nC, q2 = -9.41 nC)
A simple circuit consists of a battery connected to a lightbulb. A current of 0.243 A runs for 64.5 min, What is the voltage of the battery
A ball is thrown straight upward. At 5.50 m above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain?
Two teams of nine members each engage in a tug of war. The first team's members have average masses of 65 kg and exert average forces of 1350 N horizontally. What is the acceleration of the two teams
A coil of inductance 81 mH and unknown resistance and a 0.84 µF capacitor are connected in series with an alternating emf of frequency 875 Hz. what is the resistance of the coil
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