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Q. A single-turn current loop, carrying a current of 3.30A, is in the shape of a right triangle with sides 50, 120, and 130 cm. The loop is in a uniform magnetic field of magnitude 86.0 mT whose direction is parallel to the current in the 130cm side of the loop. What is the magnitude of the magnetic forces on each of three sides?
A cannon tilted upward at = 33 fires the cannonball with a speed of 99. At that instant, what is the component of the cannonball's velocity parallel to the ground.
A 200, 47.0 cm-diameter turntables rotate on frictionless bearings at 70. A 24.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward along the frictionless groove in the surface of turntable.
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ^circC? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A parachutist with a camera, both descending at a velocity of 12 m/s, releases that camera at an altitude of 120 m.
An asteroid is discovered heading straight toward Earth at 14km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 {rm min}, after which asteroid is moving at 26^circ to its original path at a..
A uniform plank of length 2m and mass 29kg is supported by three ropes, as indicated by the blue vectors. Find the tension in each rope when a 690N person is 0.500m from the left end.
A severe thunderstorm dumped 2.5 in of rain in 30 min on a town of area 33km2. What mass of water (in kg) fell on town? One cubic meter of water has a mass of 103kg.
You've been walking at a steady, and rope pulls up on the sled at a 21 angle. You estimate that the mass of the sled, with your friend on it, is 64 and that you're pulling with a force of 84.0.
A movable piston having a mass of 7kg and a cross-sectional area of 6 cm2 traps 0.2 mol of an ideal gas in a vertical cylinder. The piston slides without friction in the cylinder. The outside of the cylinder is kept at atmospheric pressure, 1.013×..
Pulling down on a rope, you lift a 4.49 kg bucket of water from a well with an acceleration of 1.50 m/s2. What is the tension in the rope.
When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long.
General relativity says that the total orbital energy of the binary system consisting of two neutron stars will decrease over time through the emission of gravitational waves. If this happens slowly sufficient that the orbit stays circular, response ..
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