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A baseball (mass 0.145 kg) is at rest in a mesh net above the ground. A 0.023 kg marshmallow is thrown at the baseball from directly below, and attaches itself to the ball, without hitting the net, while traveling at a speed of 3.90 m/s. How high above its starting position does the baseball-marshmallow combination rise?
A parachutist with a camera descends in free fall at a speed of13 m/s. The parachutist releases the camera at an altitude of 100 m. How long does it take the camera to reach the ground?
A tuning fork of unknown frequency makes 5 beats per second with a standard fork of frequency 377 Hz. The beat frequency decreases when a small piece of wax is put on a prong of the first fork. What is the frequency of this fork?
A 1,720-Hz pure tone is played on a stereo in an open field. A per- son stands at a point that is 4 m from one of the speakers and 4.4 m from the other. Does the person hear the tone
charges are placed on an equilateral triangle all angles are equal and equal to 60 degrees. the length of each side of
a positron is a particle with the same mass and magnitude charge as an electron but a positron has a positive charge.
A jogger generates heat energy at a rate of 808.2 W. If all this energy is removed by sweating, how much water must evaporate from the jogger's skin each hour
Pluto has a mass of 1.30x10^22 kg and a radius of 1.18x10^6 m. What is the acceleration due to gravity on Pluto
The circular blad on a radial arm saw is turning at262 rad/s at the instant the motor is turned off. FIND THE NET TORQUE APPLIED TO THE BLADE
A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 7.14 103 W. How much energy does it extract from the outside air
An airport luggage carousel has a slope of 15° down outward. What is the coefficient of static friction between the language and the carousel surface
A series RLC circuit has R = 75 %u03A9, L= 20 mH, and a resonance frequency of 4.0 kHz. What is the impedance of the circuit at resonance
A spaceship is flying directly away from Earth at a speed of 0.730c, and the captain's family at home on Earth broadcasts their well wishes on the Family Radio System frequency of 462.5625 Mhz.
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