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An antelope is at a distance of 20.0 m from a converging lens of focal length30.0cm. The lens forms an image of the animal. If the antelope runs towards the lens at a speed of 4.90m/s, what is the speed with which the image moves?
A 2.8 m long pendulum is released from rest when the support string is at an angle of 28° with the vertical. What is the speed of the bob at the bottom of the swing
A 50kg pullvolter running at 10 m/s vults over the bar. Her speed when she is above the bar is 1 m/s. estimate her altitude as she crosses the bar
The upper surface of a cube of gelatin, 7.0 cm on a side, is displaced 0.84 cm by a tangential force. what is the magnitude of the tangential force
An iron tower in is 340 meters tall on a cold day (=-8l4 degrees Celsius). What is the hight of the tower on a hot day whe the tempeture is 32.4 degrees Celsius
A baseball (mass 0.14 kg, radius 3.7 cm) is spinning with an angular velocity of 55 rad/s. what is the ratio of its rotational and translational kinetic energies
Explain why the VOLTS/DIV knob of an oscilloscope doesn't have to be calibrated and the TIME/DIV button must be calibrated when measuring time-constants
Two upward wave pulses are generated at opposite ends of a string and travel toward each other. find the maximum displacement of any particle of the string
An air-filled parallel plate capacitor with a plate spacing of 1.70 cm has a capacitance of 4.70 ?F. Calculate the dielectric constant of the inserted material
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
find the potential difference VB - VA, using the blue path.
A "swing" ride at a carnival consists of chairs that are swung in a circle by 19.3 m cables attached to a vertical rotating pole, Find the speed of the chair
The left end of a long glass rod 8.00 cm in diameter, with an index of refraction of 1.60, Find position in air of image if the left end of the rod were polished to a plane surface
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