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A crate of potatoes of mass 8 kilogram is on a ramp with angle of incline 30 degree to the horizontal. The coefficients of friction are μs = 0.72 and μk = 0.43. Compute the frictional force (magnitude and direction) on the crate if the crate is sliding up the ramp.
Two small metallic spheres, each of mass m = 0.40 g, are suspended as pendulums by light strings from a common point, what is the magnitude of the charge on each sphere
You have three light-bulbs in series. The first is 60W the next is 120W and the last is 240W. They are all at 120v. Which light-bulb has the highest resistance. I use the equation.P=I^2R and found the 240W to be the highest. This is wrong. Which ligh..
A flashlight on the bottom of a 4.15 m deep swimming pool sends a ray upward andat an angle so that the ray strikes the surface of the water1.80 m from the point directly abovethe flashlight
Steam enters a circular pipe at 1600 kPa, 400 oC and 10 m/sec and exits at 1000 kPa and 32 m/sec. find parameters of steam and pipe
Suppose the mirror is convex. The distance between the image and the object is the same as in part (a), but the image is 0.500 the size of the object. Determine the focal length of the mirror
Two small beads having positive charges 3q and q are fixed at the opposite ends of a horizontal insulating rod, extending from theorigin (the location of the larger charge) to the point x= d.
In a ballistic pendulum experiment a 20 g bullet is shot into a 2.3 kg block of wood suspended by a cord of negligible mass. what is the approximate muzzle speed (in m/s) for the gun that fired the bullet
a charge of -3.89c is fixed at the center of a compass. two additional charges are fixed on the circle of the compass
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
a ball is tossed so that it bounces off the ground rises to a height of 1.30 m and then hits the ground again 1.70 m
force 1 of magnitude 6.20 units acts at the origin in a direction 38.0deg above the positive x axis. a force 2 of
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.7 m/s in 0.11 s. How far does the pike move during this strike? A driver has a reaction time of 0.50 s, and the maximum deceleration of her car is 6.0 m/s 2. She is..
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