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Question
A box or mass 30 kg is chained to the ground. Someone pulls on the box with a force of 500 N at an angle of 40° from the ground. What force (magnitude and direction) must the chain act on the box to keep it from moving? Draw a free body diagram.
An astronaut and a satellite are at rest when the astronaut pushes off from the satellite with a velocity 4.5 m/s (relative to the satellite). If the mass of the astronaut is 60 kg and the mass of the satellite is 3.0 x 102 kg, what is the final s..
Two 10-cm-diameter charged rings face each other, 28cm apart. What is the magnitude of the electric field E? at the midpoint between the two rings
Two infinite, straight, parallel wires, each carrying current I in the same direction, are coincident with the lines (1,0,z) and (-1,0,z). What is the approximate frequency of small oscillations in the vicinity of the origin
a dentist causes the bit of a high-speed drill to accelerate from an angular speed of 1.42 x 104 rads to an angular
Based on our reading and discussion of the Green New Deal for Los Angeles, answer each of the following questions in a brief, well-constructed paragraph.
To correct myopia, is it necessary to move the image formed by the eye closer to or farther from the eyes lens system, Is the curvature of this lens concave or convex
A ball is thrown off a cliff, 100 meters tall, with an initial velocity of 5.00 m/s, which is purely in the horizontal direction. How long does it take the ball to hit the ground below the cliff
if a coal burning electrical generating plant burns 2 tons of coal to generate 6000 kwh of electricity calculate the
A transmission line that has a resistance per unit length of4.5*10^-4 ohms/meter is to be used to transmit 5.00MW over 400miles (6.44 *10^5m). WHat fraction of the input power is lost to the line underthese circumstances
A solenoid has a 3 cm x 3 cm square cross section, 1800 turns, a length of 75 centimeter and carries a 12 Amp current. Find what is the magnetic field inside the solenoid
Cara Snatched 117kg. In a snatch, the barbell is moved from a stationary position on the floor to stationary position over the athletes head. Only 1.47s elapsed from the first movement of the barbell until it was overhead, and the barbell moved durin..
a 320-kg car is moving at 25.0 ms. suddenly after the breaks are hit to lock the wheels it comes to a screeching stop
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