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A block is connected to a spring that is suspended from the ceiling. Assuming air resistance is neglected; explain the energy transformations that occur within the system consisting of the block, the Earth, and the spring when the block is set into vertical motion.
A steel ball is dropped onto a hard floor from a height of 1.55 m and rebounds to a height of 1.52 m. Calculate its acceleration during contact with the floor if that contact lasts 0.0800 ms
A 20.0 kg wood ball hangs from a 1.3 m long wire. The maximum tension the wire can withstand without breaking is 300 N. A 0.70 kg projectile travelling horizontally hits and embeds itself in the wood ball.
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; What are the fractions of muscle and fat in the leg
A kilogram of water (c = 4.186 kJ/kg °C) is stirred using a 400 watt device for 5 minutes. How much heat was lost to the surroundings
A baseball (m = 145 gram) approaches a bat horizontally at a speed of 39.1 m/s (87 miles per hour) and is hit straight back at a speed of 45.5 m/s (102 mi/h). determine the average force exerted on the ball by the bat
A car of mass M= 900-kg travelling at 45.0 kmh enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between road and car's tires.
A spring is hung from the ceiling. A 0.400-kg block is then attached to the free end of the spring. When released from rest, the block drops 0.130 m before momentarily coming to rest, after which it moves back upward.
A solid object is made of two materials, one material having density of 2 000 kg/m3 and the other having density of 6 000 kg/m3. what is its average density
A 2.00×10^4 kg railroad car is rolling at 4.00m/s when a 5000kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 193m/s and a frequency of 240Hz. The amplitude of the standing wave at an antinodes is 0.440cm .
A toroidal solenoid has 550 turns, cross-sectional area 7.00cm2 , and mean radius 4.90cm, Calcualte the coil's self-inductance
Unpolarized light passes through two Polaroid's; the axis of one is vertical and that of the other is at 70o to the vertical. Determine the intensity and orientation of the transmitted light
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