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The drawing shows a device that can be used to measure the speed ofa bullet. The device consists of two rotating disks, separated by adistance of d = 0.750 m, and rotating with an angular speed of 70.0rad/s. The bullet first passes through the left disk and then through the right disk. It is found that the angular displacement between the two bullet holes is θ = 0.360 rad. From these data, determine the speed of the bullet.
Two identical carts travel at 1m/s in opposite directions on a common horizontal surface. They collide head-on and are reported to rebound, each with the speed of 2m/s.
During a rockslide, a 270kg rock slides from rest down ahillside that is 480m long and 300m high. How much mechanical energy is dissipated by the normal forceduring the slide down the hill
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.08 m × 1.86 m. On a certain day, the indoor temperature is 27°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.)
A simple model considers a continent as a block (density ? 2800 kg/m3), estimate the height of the continent above the surrounding mantle rock
the elevator begins to accelerate at 1.5m/s^2. What is his apparent weight
The electric field midway between two equal but opposite point charges is 755 N/C, and the distance between the charges is 15.8 cm. What is the magnitude of the charge on each
At a certain point in a horizontal pipeline, the water's speed is 4.00{\rm m/s}, Find the gauge pressure at a second point in the line
What is the location of an object for which the magnitude of the image distance is one-fourth the magnitude of the object distance
A 62kg hiker starts at an elevation of 1500m and climbs to the top of a 3500m peak, What is the minimum work required of the hiker
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km , is meant to orbit the asteroid Eros at a height of about 15km. What will be the period of NEAR as it orbits Eros
Jane and John, with masses of 51 kg and 66 kg, correspondingly, stand on a frictionless surface 13m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.9m/s2 toward him.
an electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive
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