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Peter drops a stick of dynamite down another deep hole near Spruce Mountain. He times it from the moment he lets go and hears the sound exactly 11.20 seconds later. If the speed of sound is 343 meters / second, how deep is this hole?
A 105-kg horizontal platform is a uniform disk of radius 1.77 m and can rotate about the vertical axis through its center. Find the moment of inertia of this system
An at wood machine consist of 2 masses Ma and Mb, which are linked by an inelastic cord of legible masses that pieces over a pulley. if the pulley has radius Ro and moment of inertial I about its axle, decide the acceleration of masses Ma and Mb, and..
Two Carts have a perfectly inelastic collision. Cart A has mass 34.8 kg and velocity 5.08 m/s directed north immediately before the collision. What is the speed of the two carts
A photon with wavelength λ is absorbed by an electron confined to a box. As a result, the electron moves from state n = 1 to n = 7. Find the length of the box. Express your result using h, m, c, and lambda to represent Planck's constant, the electron..
A frictionless plane is 10.0 m long and inclined at 34.0°. A sled starts at the bottom with an initial speed of 6.00 m/s up the incline. Determine the initial speed of the second sled
What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second? A. 1.6 m/s^2 B. 3.0 m/s^2 C. 3.4 m/s^2 D. 5.0 m/s^2
1 a small steel ball bearing with a mass of 20.0 g is on a short compressed spring. when aimed vertically and suddenly
Zartan of the jungle crosses a river by grabbing an 8 m long vine, conveniently hanging from a strong branch, and swinging over the water. find his acceleration and the tension in the vine
two balls are launched upward from the same spot at different angles with respect to the ground. both balls rise to the
A Carnot air conditioner maintains the temperature in a house at 297 K on a day when the temperature outside is 307 K. What is the coefficient of performance of the air conditioner?
A current of 30.0 mA is maintained ina single circular loop with a circumference of 2.40 m. A magnetic field of 0.590 T is directed parallel to the plane of theloop. What is the magnitude of the torque exerted on the loop by the magnetic field?
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
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