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A block of mass m1 = 3.15 kg on a frictionless plane inclined at angle = 32.5° is connected by a cord over a mass less, frictionless pulley to a second block of mass m2 = 2.45 kg hanging vertically (see the figure). (a) What is the acceleration of the hanging block (choose the positive direction down)? (b) What is the tension in the cord?
An empty sled of mass 25kg slides down a muddy hill with the constant of 2.40m/s. The slope of the hill is inclined at the angle of 15 degrees with the horizontal.
A starship moving toward Earth with a speed of 0.80c launchesa shuttle craft in the forward direction. What is the speed of the shuttle relative to the starship
q1. a thin horizontal copper rod is 1.59347 m long and has a mass of 33.2472 g.the acceleration of gravity is 9.8
Glider A with mass 0.400 kg, gliding with a velocity of magnitude 0.50 m/s on a frictionless, horizontal air track, makes a perfectly elastic head-on collision with a glider B with mass, Find the mass of the glider B
A room measures 2.0 m by 5.5 m by 5.0 m. The heating and air-conditioning ducts to and from the room are circular with diameter 0.23 m, What is the necessary flow speed in the duct
An electron moves to the right with a speed of 0.91c relative to the laboratory frame. Find the speed of the proton relative to the laboratory frame
A very long, straight wire carries a current of 0.180 A. This wire is tangent to a single-turn, circular wire loop that also carries a current. The directions of the currents are such that the net magnetic field at the center of the loop is zero.
Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.44 m/s, while the speed of the current is 2.3 m/s. how wide is the river
A watertight car is submerged under water. What force is required to open a door of area 1.25 m2 if the average depth of water at the door is 1.92 m
How much heat must you add to a 10 kg bar of steel to increase its temperature 600 degrees Celsius
a short bar magnet of magnetic moment m 0.32 j t-1 is placed in a uniform magnetic field of 0.15 t. if the bar is free
A person on a safari wants to take a photograph of a hippopotamus from a distance of 75.1 m. What would be the size of the image if a lens of 50.0-mm focal length were used
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