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a) A 2kg block rests on a 30 degree incline; determine the coefficient of static friction required to keep the block still.
b) If the same 30 degree ramp was frictionless, the distance from the block to the bottom of the ramp were 1m and the block had an initial upward speed of 3m/s, what speed would the block have at the bottom?
What is he wavelength of a 22.75*10^9 Hz radar signal. What is the frequency of an X-ray with wavelength 0.12nm
A child in danger of drowning in a river is carried downstream by a current that flows uniformly with a velocity of 2.0 meters per second.
1 search the internet for real applications of statistics in the workplace. as a hint type the word statistics
Our closest stellar neighbor , alfa-centauri , is 4.3 light years away.it has been suggested that TV programs from our planet have reached this star and may have been viewed by the hypothetical inhabitants of a hypothetical planet orbiting this st..
At the instant of the figure, a 1.4 kg particle P has a position vector r of magnitude 1.1 m and angle ?1 = 45° and a velocity vector v of magnitude 3.8 m/s and angle ?2 = 30°. What is the torque acting on the particle about the origin
A small pistol fire a 1.5g bullet at 1000 m/s. The bullet strikes a 200g wooden block resting on a horizontal frictionlessl surface, What is the speed of the bullet &block system after the bullet had been embedded in the block
A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, What is the maximum height the blue ball reaches
it took a force of 250 N to pull a crate weighing 765 N across the floor. the work done was 3500 J. how far was the crate moved
A runner weighs 573 N and 71% of this weight is water. How many moles of water are in the runner's body
A ball is thrown 20.0 m/s at an angle of 40.0º with the horizontal. Assume the ball is thrown at ground level. How long does it take the ball to reach the wall
A concave mirror has a focal length of 25.8 cm. The distance between an object and its image is 51.4 cm. Find (a) the object and (b) image distances, assuming that the object lies beyond the center of curvature and (c) the object and (d) image distan..
100 grams of oxygen and 100 grams of hydrogen gas occupy separate, equal sections of 200 liter tank. find the pressure after the reaction ends
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