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You are trying to tilt a very tall refrigerator (2.0 m high, 1.0 m deep, 1.4 m wide, and 140 kg) so that your friend can put a blanket underneath to slide it out of the kitchen. Determine the force that you need to exert on the front of the refrigerator at the start of its tipping. You push horizontally 1.5 m above the floor.
A small ball with mass m is attached to a string, which goes over a pulley and makes a small angle swing. Derive the period of this simple pendulum
The space shuttle needs to slow down in order to return from its orbit. It does so by reversing direction and firing its 3 main engines for a short amount of time. The mass of the space shuttle is 2.0 x 106 kg and has an orbital speed of 8000 m/s. Th..
In a 30.0 s interval, 540 hailstones strike a glass window of area 0.600 m2 at an angle of 45.0° to the window surface. Find the pressure on the window
What should be the mass of object B? The numbers in the figure indicate the relative lengths of the rods on each side of their supporting cords.
A 55 kilogram gymnasts hang vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 45 degrees with the ceiling, evaluate what is the tension in each rope
Two metal balls A and B of negligible radius, connected by a taut nonconducting thread of length 2.40 m, are floating at rest on Space Station Freedom between two metal bulkheads. Ball A carries charge q, and ball B carries charge 2q.
a 2 kg rock tied to a 3 meter long rope is spun around in a horizontal circle at 4 ms. how much work is done on the
A point mass consisting of 26 charged particles travels at a velocity of magnitude 7.80 x 107 m/s through a uniform magnetic field of magnitude 10.2 T. Each charged particle has a charge of -12e and a mass of 3.60 x 10-29 kg. The angle between the..
The increase in the kinetic energy of the box
a helicopter lifts a 61 kg astronaut 13 m vertically from the ocean by means of a cable. the acceleration of the
A 8.00-kg block of ice, released from rest at the top of a 1.32-m -long frictionless ramp, slides downhill, reaching a speed of 2.76m/s at the bottom. What is the angle between the ramp and the horizontal
An FM transmitter delivers 30 KW into a 50 ohm antenna. Calculate the modulation index, the sensitivity of the transmitter's modulator and write the equation of the FM signal
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