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A student is trying to push a desk of mass m = 95kg and horizontal width w = 0.8m along the floor. The coefficient of friction between the desk and the floor is ms = 0.66. The center of mass of the desk is at the geometric center of the rectangle shown.
What is the minimum force necessary to move the desk?
If the force that is applied is just barely less than the answer to the previous problem, what is the maximum height h so that the desk won't tip over?
A circular wire loop of radius 0.50 m lies in a plane vertical to a uniform magnetic field of magnitude 0.40 T. If in 0.10 s the wire is reshaped from a circle to a square, but remains in the plane, what is magnitude of the average induced emf in t..
A hunter aims directly at the target (on the same level) 115 m away. If the bullet leaves the gun at a speed of 205 m/s, by how much will it miss target.
A police radar gun emits an electromagnetic wave at a frequency of fs = 1.08×1013 Hz. What is the speed of the oncoming car (v)
Two slits separated by 0.0530 mm and located 1.60 m from a viewing screen are illuminated with monochromatic light. Find the separation between adjacent bright fringes
At the same time, car 2 is 1.2 east of mile marker 0 travelling at 30 due wests. Car 1 is speeding up with an acceleration of magnitude 0.20, and car 2 is slowing down with an acceleration of magnitude 0.60.
A metal rod of mass 50 and electrical resistance 0.10 rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance = 10.0 apart. The rails are also connected to the voltage source providing a voltage of = 5..
What is the capacitance of a pair of circular plates with a radius of 5.0cm separated by 2.9mm of mica? The dielectric constant of mica is 7
You are traveling on an airplane. The velocity of the plane with respect to the air is 130 m/s due east. What is the Velocity with respect to the ground
The intensity of electromagnetic waves from the sun is 1.4kW/m2 just above the earth's atmosphere. How many Joules of solar energy fall on your back as you work on your tan for 1.1hr
Calculate the dc voltage applied to the circuit.
Consider a mountain range that has been uplifting at a rate of 10 m/Myr for the past 5 Myr, the mountain range to come into a steady state with tectonic uplift, Estimate the soil thickness on the side of the mountain
A sailboat is heading directly north at a speed of 21 knots (1 knot = 0.514 m/s). The wind is blowing towards the east with a speed of 10.6 knots. (Both velocities are given relative to the Earth.)
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