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A 0.22-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.1 m. (a) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone? Earth system before the stone is released. J (b) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone?Earth when it reaches the bottom of the well? J (c) What is the change in gravitational potential energy of the system from release to reaching the bottom of the well? J
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 74.1 dB. The waves reflected from the walls create, by themselves, an i..
A 7 kg, 22 cm diameter turntable rotates at 500 rpm on frictionless bearings. What is the turntable's angular velocity
When the power is turned off on a turntable spinning at 71.0 rpm , you find that it takes 12.6 revolutions for it to stop while slowing down at a uniform rate. find the angular acceleration (in rad/s^2 ), of this turntable
A dart with a mass of 0.025 kg traveling with a speed of 13 m/s impacts a dart board and stops. What work was done by the dart board in stopping the dart
A doubly charged ion (charge 2e) with velocity 6.9 × 106 m/s moves in a circular path of diameter 60.0 cm in a magnetic field of 0.80 T in a mass spectrometer
An archer standing on a 15° slope shoots an arrow 20° above the horizontal, as shown in the figure. How far down the slope does the arrow hit
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, What is the energy lost by the pendulum
A pressure as low as P = 8 ? 10-11 Pa has been obtained. Suppose a chamber contains helium at this pressure and at room temperature, Estimate the mean free path
A uniform magnetic field of magnitude B = 0.020 T is in the positive y-direction. Determine the magnitude and direction of the magnetic force on each segment.
A 12cm tall robin sits in a tree 1.500 m above a shiny lawn sphere with a diameter of 48.00 cm. How tall does the image of the robin appear as he sees his reflection? Use a ray diagram and the equations to locate and completely describe the image.
During gym class, a 50-kg teenager runs at 8.0 m/s along the floor toward a rope hanging 7.8 m from the ceiling. What is the tension in the rope at the moment he begins to swing upward
a block of mass 12.0 kg is connected to a spring on a horizontal frictionless surface. write the expression for the position of the block as the function of time
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