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Q1. The pulley system is used to lift a 52 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to crate. assume the masses of the chains, pulleys, and ropes are negligible, conclude the force, the tension in the upper chain, and the tension in the lower chain, given that crate is rising with an acceleration of 2.8 m/s^2.
Q2. What is the body temperature in degree Celsius, if you had a fever of 106.5 degrees in Fahrenheit, what will it being in Kelvin and Celsius degrees also? What formula should I use to answer the problem?
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A good baseball pitcher can throw a baseball toward home plate at 91 miles per hour with a spin of 1789 revolutions per minute. How many revolutions does baseball make on its way to home plate? For simplicity, assume that the 60.0 ft path is a straig..
A guitar string is 92 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 63 cm, What are the frequencies of the fundamental and first two overtones
What is the magnitude of the apparent weight of a 83 astronaut 4600 from the center of Earth's Moon in a space vehicle moving at constant velocity.
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
A ball of mass 0.300kg that is moving with a speed of 5.4m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
Over the course of a multi-stage 4080-km bicycle race, the front wheel of an athlete's bicycle makes 2.00 106 revolutions. How many revolutions would the wheel have made during the race
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m. Illustrate what is the block's speed when it is at a height of 0.25 m above the base of the slide?
In a film projection apparatus it is desired to produce pictures12 feet wide on a screen 50 feet from the lens; What must be the focal length of the projection lens used
At which wavelengths (or energies) will you observe lines in infrared absorption (a phonon absorbs a photon) and raman scattering spectra? The temperature is 300 k. raman scattering is excited with a cw Argon laser at 514.5 nm.
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
An explosion breaks an object into two pieces, one of which has 1.80 times the mass of the other. If 10000 J were released in explosion, how much kinetic energy did each piece acquire.
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