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A 1.0-kg block is pushed up a rough 22o inclined plane with a force of 7.0 N acting parallel to the incline. The acceleration of the block is 1.4 m/s2 up the incline. Decide the magnitude of the force of friction acting on the block.
A 78 kg cross-country skier glides over snow as in the figure below. The coefficient of friction between skis and snow is 0.50. Suppose all the snow beneath his skis is at 0°C and that all the internal energy generated with friction is added to snow,
mass if it is placed at the following locations. Consult the figure 12.9 in the textbook, and assume a constant density through each of the interior regions, estimate the average density for each region
Some clocks that are powered by an AC voltage use the AC frequencyto keep time. The power company makes this possible by arranging to have precisely the correct number of cycles occur every day, whichkeeps such clocks from gaining or losing time o..
in the large hadron collider lhc located at cern in france and switzerland protons move in a circle of radius 4.96km.
consider a point p on the viewing screen of a double-slit interference experiment. this point is 45 of the way from the
A rope can withstand 1.0 x 10^3 N of tension. If the rope is being used to pull a 10.0-kg package across a c=frictionless surface, what is the greatest acceleration that will not break the rope
A square coil, enclosing an area with sides 3.4 cm long, is wrapped with 2,224 turns of wire. What average voltage is induced in the coil
An earth satellite moves in a circular orbit with an orbital speed of 6000m/s. Find the time of one revolution of the satellite
A current of 17.0 mA passes through a circular cable of 2.0m of circumference. A magnetic field of 0.8T passes parallel to the plane of the "loop". calculate what is the magnetic moment of the loop
It takes 2.80 s for a small ball with a mass of 0.120 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released
A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 2.80 s for the ball to reach its maximum height. Find the ball's initial velocity
a wheel accelerates at a constant rate from 30 rpm to 90 rpm turning through 8.00 radians in the process. two persons
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