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A 21.00 kg block is pushed up a frictionless inclined plane that makes an angle of θ = 31o with the horizontal direction. What force is required to move the block with constant speed? Suppose that the force is parallel to the surface of the plane.
A boat is traveling upstream at 14 km/h with respect to thewater of a river. The water itself is flowing at 9 km/h withrespect to the ground. What is the velocity of the boat with respect to the ground
bone is an anisotropic material because its expansion coefficient are different direction. one experimental measurement
a tennis ball of mass 0.060 kg is served. It strikes the ground with a velocity of 54m/s ( 120 mi/h) at an angle of 22 degree below the horizontal. what average force did the ground exert on the ball
The label on a 12.0-V truck battery states that it is rated at 181.0 A·h (ampere-hours). Treat the battery as ideal. How much electric energy can the battery supply
question1a dolphin located in sea water at a temperature of 21?c emits a sound directed toward the bottom of ocean 148
Suppose a tank contains 505 m3 of neon (Ne) at an absolute pressure of 1.01Ã-105 Pa. The temperature is changed from 293.2 to 295.8 K
A mono energetic beam of electrons (me = 9.11 x 10-31 kg) whose kinetic energy is 120 eV is incident on a single slit of width 1.0 nm. A diffraction pattern is formed on a screen 20 cm from the slit. What is the width of the central maximum (i.e. the..
A rubber ball (150g) confined to move in the x direction, bounces elastically back and forth at 9m/s between two walls, Calculate the average pressure on this wall
A series LC circuit contains a 100 mH inductor, a 36.0 mF capacitor and a 12 V battery. The period of the electromagnetic oscillations in the circuit is
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.2 s, illustrate what is the average force exerted on the ball by the wall
A rope is used to pull a 4.56 kg block at constant speed 5.47 m along a horizontal floor. find the work done by the rope's force
A harmonic signal with a frequency of 1000 hertz and an amplitude of 2 v is displayed on the oscilloscope. Find what horizontal setting for the time (ms/div) will display one complete cycle of the signal in 4 horizontal divisions
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