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Question: The baseball's kinetic energy is 1/2 × 0.15kg ×(24.6ms-1)2 = 45.4J. The kinetic energy of the bowling ball is 1513J. That of the automobile is 0.454MJ (where "M" is the usual abbreviation for the prefix "mega," which stands for 106). Verify that these are correct numbers. Notice that since each mass has the same speed, their kinetic energies vary only by the ratios of their masses, i.e.,
A glass plate (n= 1.61) is covered with a thin, uniform layer of oil (n=1.16). A light beam of variable wavelength is normally incident from air onto the oil surface. calculate the thickness of the oil film
A charge of 50 mC is placed on the y axis at y = 3.0 cm and a 77-mC charge is placed on the x axis at x = 4.0 cm. If both charges are held fixed, what is the magnitude of the initial acceleration of an electron released from rest at the origin?
Regarding the Earth and a cloud layer 800 m above the earth as the "plates" of a capacitor, calculate the capacitance. What is the maximum charge the cloud can hold
A 136.48 gram ice cube at -12°C is placed in an aluminum cup whose initial temperature is 74°C. Determine what is the mass of the cup
Batman (mass = 95.9 kg) jumps straight down from a bridge into a boat (mass = 683 kg) in which a criminal is fleeing. The velocity of the boat is initially +8.67 m/s. What is the velocity of the boat after Batman lands in it?
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. By how much does the ball clear or fall short of clearing the crossbar? (Enter a negative answer if it falls short.
A circular coil with one turn is in a perpendicular (time dependent) magnetic field given by B = 1.400 - 0.0500 t Tesla, where time t is in seconds. Calculate the radius of the coil
A quarterback can throw a football at 27m/s. If we assume that the ball is caught at the same height from which it is thrown, How long is the ball in the air
The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth, What is the vertical component of the water's initial velocity
In the circuit shown in the figure, the capacitors are all initially uncharged and the battery has no appreciable internal resistance. find the maximum potential difference across each capacitor
A 2.0 µF capacitor in a circuit in series with a resistance of 1.0 M is charged with a 6.0 Volt battery. Find how long would it take to charge the capacitor to three-fourths of its maximum voltage
A golf ball (mass = 46 g) is struck by a golf club (mass = 210 g). The club head's velocity, how fast is the ball moving after impact
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