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A Dodge Caravan has a speed of 50 mph and an acceleration of 2 mph second. A Ford Taurus has a speed of 55 mph and an acceleration of 1 (mph) per second. Which car has the higher speed after 10 seconds have elapsed?
What is acceleration of the elevator
A large capacitance of 2.00 mF is needed for a certain application, What is the maximum voltage that can be applied
A series RLC circuit has components with the following values: L = 22.0 mH, C = 86.0 nF, R = 25.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit.
A 2.50-g bullet travelling at a speed of 425 m/s, strikes the wooden block of a ballistic pendulum, such as that Figure in 7.12. The block has a mass of 215 g. Calculate the speed of the bullet/block combination quickly after the collision.
A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle. determine the engine's efficiency
A replace poker consists of a wrought iron rod, 50 cm long and 5 cm2 in cross-section, fused to a piece of cork 10 cm long, Estimate the temperature at the iron-cork boundary
A duck has a mass of 2.1 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east, Find the magnitude and direction (relative to due east) of the displacement that the duck undergoes in 2.6 s while the forces are acting
A meter stick supported at the 50 cm mark has masses of 300 g & 200 g hanging from it at the 10-cm & 60-cm mark, respectively. Where should we hang a third, 400-g mass to keep the meter stick balanced?
From the shore, you observe a buoy in the ocean rising and falling with the waves. You determine it takes 5 s for the buoy to go down and up again, Approximately how fast are the waves moving
he car is suspended beneath the helicopter by a steel cable. Illustrate what is the lift force exerted on the air by the helicopter's rotor?
Mr. Physics drops a rock down a 250-meter deep well. Upon impact with the bottom of the well a short burst of sound is produced with a frequency of 250 Hz. How long after he drops the rock does he hear it hit bottom of the well.
An athlete performs a Romanian deadlift with 197 kg bar from floor to hips (0.75 m) in 2.1 seconds. How much mechanical power is generated from the athlete
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