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Question1
A 1200-kg automobile travels at a speed of 12 m/s.
(a) what is it the kinetic energy?
(b) What is work that would be required to bring it to a stop?
(c) If the force that causes it to stop is a constant 1250 N, how far before it stops?
Question2
A 0.500-kg ball is thrown vertically upward with an initial speed of 10.0 m/s. If initial potential energy is taken as zero, find balls-
a) Kinetic energy 1.00 m above initial position
b) potential energy 1.00 m above initial position
c) mechanical energy 1.00 above initial position
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues
A tank of water sits at the edge of a table of height 2m. The tank springs a very small leak at its base, and water sprays out a distance of 1.4 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the a..
Compare these two ratings by determining the ratio of energy.
A series RLC circuit with R = 43 Ohms , L = 270 mH , Find the maximum frequency of the frequency range over which the peak current will exceed half its value at resonance
If 0.040kg of ice at 0 C is added to 0.390kg of water at 30 C in a 0.130-kg aluminum calorimeter cup
Suppose you stir 1 kg of water until its temperatue raises by 1 degree C. How much work did you do on the water
a 600 ton Boeing business jet is flying at 500 mph at a constant altitude of 35,00 ft. what is the lifting force acting on the jet provided by the air
Calculate the electrical potential at the center of the square described as follows: Four charges are placed at the corners of a 20 cm square
If one arm of a Michelson interferometer contains a tube 2.5 cm long that is ?rst evacuated and then slowly FIlled with air (n=1.0003)
A typical nuclear power plant converts 0.01% of the mass of its fuel into energy through nuclear reactions. How much fuel would be needed to power an average city for one day
A 990-kg sports car collides into the rear end of a 2100-kg SUV stopped at a red light. The bumpers lock, the brakes are locked, What was the speed sports car at impact
A shopper pushes a cart 50 m south down one aisle and then turns 90° west and moves 28 m. He then makes another 90° turn and moves 11 m.
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