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A person pulls a toboggan for a distance of 41.7 m along the snow with a rope directed 24.3 ° above the snow. The tension in the rope is 81.6 N.
(a) How much work is done on the toboggan by the tension force?
(b) How much work is done if the same tension is directed parallel to the snow?
A 40-g bullet leaves the muzzle of a gun at a speed of 300 m/s. If the barrel of the gun is 12 cm long, what is the force acting on the bullet while it is in the barrel.
A skier is accelerating down a 30 degree hill at 3.60 m/s^2. How long would it take her to reach the bottom of the hill, assume she starts from rest and accelerates uniformly, if elevation change is 170m.
a girl who weighs 720 N rides on a FErris wheel of radius 7.5 m. when at the top of the wheel her effective weight is 600 N. Find out her speed and the angular speed of the wheel
There are two major types of aberration (defective image formation) in lenses: spherical and chromatic. Spherical aberration comes from fact that a spherical lens has the property of focusing parallel rays to a single point only approximately.
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
If so evaluate their acceleraton and the tension in the string. If not determine the sum of the magnitudes of the forces of friction acting on the blocks.
An electric force of 4.0 N exists between two objects separated from each other by a distance of r. If the distance is decreased to 0.50 r, compute the magnitude of the force between the two objects.
A uniform plank of length 4.7m and weight 204 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 445N walk on the overhanging part of the plank before it just begins ..
A novice skier, starting from rest, slides down a frictionless 37.0° incline whose vertical height is 175 m. Explain how fast is she going when she reaches the bottom?
find the magnitude of her centripetal acceleration. A small box is held in place against a rough vertical wall by someone pushing on it with the force directed upward at 27{rm ^circ} above the horizontal.
What average total force acted on the car. How far did the car travel during that time.
illustrate the industry that is Swisher? The specifics of this question comprise - a) sales growth, b) number of domestic competitors, number of private labels and its market share, c) distribution network that dominates d) the buying behaviour of..
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