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a tennis ball of mass o.022 kg is moving at 3.1 m/s at anangle of 222 degrees to the horizontal. it is struck by a tennisracket which exerts a force on it of 73t - 442t 2 N. for one tenth of a second at an angle of 32degrees to thehorizontal. find the final velocity of the tennis ball. (expressyour answer using i and j unit vectors)
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
A microscope uses an eyepiece with a focal length of 1.43 cm. What is the magnification of the microscope
assuming the average person has a mass of 68kg? Do not avoid the weight of the logs. Assume the specific gravity of wood is 0.6.
The coefficent of static friction between the floor of a truck and a box resting on it is 0.33. the truck is traveling at 89.0 km/h. What is the least distance in which the truck can stop
A disk with a mass of 37.5kg and a radius of 38.3cm is mounted on a frictionless horizontal axle. A string is wound many times around the disk and then attached to a 56.4kg block. Find the acceleration of the block, assuming that the string does n..
A solid block of wood is a cube whose volume is 1x10^-3m^3. When dropped into a swimming pool, How much does the block of wood weigh
A 25 kg box is released from rest on a frictionless ramp making an angle of 42o with the horizontal. Determine the normal force on the box
A private pilot correctly sets her altimeter to reflect a reported altimeter setting of 1012mb at her departure airport. If she fails to update her altimeter, what will her actual altimeter margin be in the worst case as she crosses the highest ter..
A certain string on a piano is tuned to produce middle C (f1= 261.63 Hz) by carefully adjusting the tension in the string
An astronaut travels to an alternate universe that contains infinite charged plane and no other charged objects. The astronaut observes that the electric field in this universe has a magnitude of 1.20 N/C everywhere and points directly away from the ..
In the high jump, Fran's kinetic energy is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must Fran leave the ground
You use a sequence of ideal polarizing filters, each with its axis making the same angle with the axis of the previous filter, to rotate the plane of polarization of a polarized light beam by a total of 45.0°. You wish to have an intensity reducti..
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