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A 2.6-kg object hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 5.0° with the vertical, as shown in the figure below. Find the acceleration of the car.m/s2
A soap film in air has thickness L = 250 meters. It totally reflects orangle light with 620nm wavelength. What color and wavelength of light does it totally transmit
For one of the measurement you will be using a hanging mass of M=150 grams. Determine the expected frequency f2 of the second harmonic standing wave
The spin cycles of a washing machine have two angular speeds, 431rev/min and 622rev/min . The internal diameter of the drum is 0.440m. Find the laundry's maximum tangential speed
The lander is 8.2 meters above the surface and has the downward speed of 0.89 m/s while the engine is cut off. What is the speed of the lander just before it touches the surface.
A typical incandescent lightbulb has a filament temperature of approximately 3191 K. At what wavelength is the intensity of the emitted light highest
An RC circuit has a resistance of 20 mega ohms and time constant of 100 sec. If the capacitor charged to a voltage of 10v, what is the charge in coulombs on its plate
A bullet of mass 5.00g is fired horizontally into a wooden block of mass 1.17kg resting on a horizontal surface. What was the initial speed of the bullet
A 91 crate, starting from rest, is pulled across a floor with a constant horizontal force of 390. What is the final speed of the crate
A parallel plate capacitor has plates each of area 100 cm^2, what is the average charge density on the positive plate?
Three pucks have masses m1=100g, m2=125g, and m3=150g. The pucks with masses m1 and ms move with velocities v1=4.00m/s in the negative-y direction, what is the angular momentum of the system
A prospector finds a solid rock composed of granite(?= 2650 kg/m3)and gold. The volume of the rock is3.30multiplied by10-4m3and its mass is3.03kg
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.5kg , What is the final speed of the crate if Jill jumps first and then Jack, again in the same direction
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