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Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.50 cm, its potential energy is 0.0025 J. a) What is the force constant of the spring? (b) What compression is required for the spring potential energy to equal 0.0084 J?
zorch, an arch enemy of superman, decides to slow earth's rotation to once per 27.0 h by exerting an opposing force at, How long must zorch push with this force to achieve his goal
A 10g bullet is fired horizontally into a 300g wooden block initially at rest on a horizontal surface and becomes embedded in it. The coefficient of friction between block and surface in 0.50. The combined system slides 4.0m before stopping. With ..
A sphere that is a perfect blackbody radiator has a radius of 0.120 m and is at 200°C in a room where the temperature is 20°C. Calculate the net rate at which the sphere radiates energy
A sled, which has amass of m=125kg., is sitting on an icyhorizontal surface. find the magnitude of the normal force acting on the sled
A glass flask whose volume is 1000cm3 at a temperature of 0.200?C is completely filled with mercury at the same temperature. find the coefficient of volume expansion of the glass
find out the z-component of the block's momentum after the kick.
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
A spring stretches by 0.0157 m when a 3.22-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 6.43 Hz
A 70 g bullet traveling at 250 m/s penetrates a block of ice at 0°C and comes to rest within the ice. Assuming that the temperature of the bullet does not change appreciably, how much ice is melted as a result of the collision?
A 0.73-kg magnetic target is suspended on a string. A 0.025-kgmagnetic dart shot horizontally, strikes the target head-on. The dart and the target together acting like a pendulum, swing 12.0 cm above the initial level before instantaneously coming to..
Determine the Intelligence frequency, carrier frequency, Modulation index, Carrier power, total power in FM signal and power in each sideband.
The net work done in accelerating a propeller from rest to an angular speed of 135 rad/s is 1998.5 J. What is the moment of inertia of the propeller
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