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A sled of mass 50.0 kg is pulled along flat, snow-coveredground. The static firiction coefficient is 0.30, and the kineticfriction coefficient is 0.10.
a. What does the sled weigh?
b. What force will be needed to start the sled moving?
c. What force is need to keep the sled moving at a constantvelocity?
d. Once moving, what total force must be applied to thesled to accelerate it at 3.0 m/s squared?
at t1 4.00 s the acceleration of a particle moving at constant speed in counterclockwise circular motion is a 5 i 8j
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Calculate the force of gravity on a spacecraft 32000 km (5 earth radii) above the Earth's surface if its mass is 1800 kg. N (toward the earth)
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A radar station locates a sinking ship at range 15.6 km and bearing 136° clockwise from north. From the same station, a rescue plane is at horizontal range 19.6 km, 160° clockwise from north, with elevation 2.10 km. (a) Write the displacement vector ..
A jet is circling an airport control tower at a distance of 16km. An observer in the tower watches the jet cross in front of the moon. As seen from the tower, the moon subtends an angle of 9.50x10-3 radians. Find out the distance traveled (in mete..
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A rotating wheel requires 3.09-s to rotate through 37.0 revolutions. calculate the constant angular acceleration of the wheel
When two capacitors are connected in parallel across a 10.0 V rms, 1.0 kHz oscillator, the oscillator supplies a total rms current of 523 mA. What are the values of the two capacitors
Two packages at UPS start sliding down a ramp 40 degrees from the horizontal, Package A is sliding down in front of Package B. Package A has a mass of 3.50 and a coefficient of kinetic friction of 0.220. Package B has a mass of 8.00 and a coefficient..
If you fire a cannonball straight upwards with a starting speed of20m/s. How high does it go, and how long will it be in the air? What is its velocity before it strikes the ground?
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