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A penny is released from the top of a very smooth sphere of radius 1 meter. the sphere is fixed to platform and doesn't move. the penny slides down from rest and leaves the sphere at a certain point. how far will the penny fall away from the point of contact of the sphere and the platform
A highway curve has a radius of 0.14 km and is unbanked. A car weighing 12 kN goes around the curve at a speed of24 m/s without slipping. What is the magnitude of the horizontal force of the road on the car?
In a thundercloud there may be electric charges of +37.0 C near the top of the cloud and -37.0 C near the bottom of the cloud. What is the electric force on the top charge
Amotorist drives along a straight road at a constant speed of 15.0m/s. Just as she passes a parked motorcycle officer, the officerstarts to accelerate at 2.00 m/s2, to overtake her. The motorist always goes at the same speed.
If two electrons are each 2.10*1010m from a proton, as shown in the figure, find the magnitude and of the net electrical force they will exert on the proton.(Figure 1)
A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 25 m/s, Estimate the maximum height the ball reaches
A person stands on a scale inside an elevator at rest. Thescale reads 800N. What is the person's mass
at some point in its orbit our asteroid is moving with a speed of 20 kilometers per second. determine the kinetic
A large water tank springs a leak in its side whcih is 10 m above the ground. How far above the leak is the water level in the tank
A rocket with mass M is fired vertically upward. At the instant it reaches an altitude of 800m and a speed of v=350 m/s, it explodes into 3 fragments. one fragment with mass 1/2M moves upward with a speed of v1=400m/s following the explosion. The sec..
To focus a camera on objects at different distances, the converginglens is moved toward or away from the film, Over what distance must the lens be movable
steel rod (ρ = 7860 kg/m3) has a length of2.55 m. It is bolted at both ends between immobile supports. Find the tension that develops when the rodloses 3490 J of heat
Light of two different wavelengths is used in a double-slit experiment. What is the wavelength of the other light
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