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A coin is placed 29cm from the center of a horizontal turntable, initially at rest. the turntable begins to rotate. When the sped of the coin in 120 cm/s (rotating at a constant rate) the coin just begins to slip. The acceleration of gravity is 980 cm/seconds squared. What is the coefficient of static friction between the coin and the turntable.
You want to project an image onto a wall. A typical slide for a projector is 24mm X 36 mm and the screen at the front of a room is 5m away. If you wish to fill a 1.2m X 1.8m screen, what focal length of lens do you need?
The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.8 m/s as it passes through the lowest point. Illustrate what is the tension in the rope at that point?
What is the probability of finding both particles in the same single-particle state, for the three cases of distinguishable particles, identical bosons, and identical fermions?
In your analysis, consider the contribution of the internal heat sources such as people, lights, and appliances. Identify the primary sources of heat loss from your house and propose ways of improving the energy efficiency of your house.
A circular coil of radius 5 cm and resistance 0.20m ohms is placed in uniform magnetic field perpendicular to the plane of the coil. What is the magnitude of the current induced in the coil at the time t=2 seconds
What is water speed along the boat during the vertical cross
Pulsed lasers used in science and medicine produce very short bursts of electromagnetic energy. If the laser light wavelength is 1062 nm, How many wavelengths are found within the laser pulse
(AThe student suggests using the second hand of a wall clock ti measure the time. Another student suggests using a stopwatch reading to 0.01s. Suggest and explain which timer is the more suitable to use
How much force acts on each of her feet while she is coming to a stop? Express this force as a multiple of her weight.
A rower can row at 3.77 m/s in still water. He wants to row directly across a river 252 wide with a constant current of 1.33 m/s. calculate how long will it take him to cross the river
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.27rad/s2. It accelerates for 31.5 s, then maintains aconstant angular velocity.
What is the coefficient of performance of an ideal heat pump that extracts heat from 7.0oC air outside and deposits heat inside a house at 22oC
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