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Steel ball of 300 g is attached to a 85cm fixed at one end and is released with cord horizontal. At bottom of its path it hits a 3.5 kg steel block at rest. Elastic and no friction. Find the hight the ball rebounds.
suppose that you are swimming in a river while a friend watches from the shore. in calm water you swim at a speed of
A rock is thrown horizontally from a bridge by a velocity of 13.0 m/s. it takes the rock 3.5 s to strike the water below. What is the magnitude of the velocity of the rock just before it hits the water?
An airplane is flying with a velocity of 98.0 at an angle of 24.0 above the horizontal. How far from the dog will the suitcase land
A 5-m length of wire carrying a current of 1.5 Amp is in a magnetic field of 2 T. Determine the magnetic force on the wire if the angle between the wire and the magnetic field is 25o
A 440-turn solenoid is 30 cm long and 1.1 cm in diameter and carries 57 mA. How much magnetic energy does it contain
Pendulum. A small rock with mass 0.22 kg is fastened to a massless string with length 0.70 m to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45° with the vertical. A
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 11 years have elapsed on earth, and 9.3 years have elapsed on board the ship. How far away (in meters) is the planet, according to obse..
How long will it take to transfer 4.186 x 106 j of heat through a 2m2 pane of 3 mm thick glass if the temp difference is 10degreeC
A light board, 10m long, has two supports, one at one edge of the board and a second at the mid point. What is the force exerted by the sawhorse at the end of the board
A 650-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 9.50 s. What is his power output
A bat flies toward a wall at a speed of5.0m/s. As it flies, the bat emits an ultrasonic sound wave with frequency29.5kHz. What frequency does the bat hear in the reflected wave
A 75-Kg athlete does a single-hand handstand. If the area of thehand in contact with the floor is 125 cm2, what pressureis exerted on the floor?
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