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1) A brick is thrown upward from the top of a building at an angle of 13.1? Above the horizontal and with an initial speed of 9.33 m/s. The acceleration of gravity is 9.8 m/s2. If the brick is in flight for 2.9s,
How tall is the building?
2) An arrow is shot at 37 Angle with the horizontal. It has a velocity of 46 m/s. The acceleration of gravity is 9.8 m/s2 .How high will the arrow go? What horizontal distance will it travel?
A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 31.7 mA upward, what is the current (in A) in the wire
A semitrailer is coasting downhill along a mountain highway when its brakes fail. Determine what was the trucks initial speed? Ignore air resistance and friction
a pair of closely spaced parallel conducting plates charged with equal and opposite electric charges produces a uniform
A meterstick moving at 0.888c relative to the Earth's surface approaches an observer at rest with respect to the Earth's surface. What is the meterstick's length as measured by the observer
What is the frequency of sound put out by the engine of a car moving at 90km/hr if its four-cylinder engine makes 2000 revolutions per kilometer
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 35.7 dB. What is the intensity delivered to the eardrum
A motor pulls a ski tow rope moving 10 skiers at a time (each 75kg) up a slope of 20 degrees at a constant 2m/sec speed. find the minimum power the motor must have to accomplish this
A long, straight wire of length 1.5 mcarries a current of I = 6.0A. If a magnetic field of magnitude B = 1.3 T is directed perpendicular to the wire, what is the magnitude of the force on the wire?
suppose the speci?c heats of milk and coffee are the same as that of water.
calculate the energy content of 1 kg of natural uranium assuming complete fission. estimate an average energy per
A 15 kg child sits on the edge of at 2 m radius, 200 kg merry go round. A father as been getting a little carried away, What is the final angular velocity of the merry go round
A small figurine has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 13 cm in front of the mirror. Define the focal length of the mirror.
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