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An electron initially at rest is accelerated between two parallel plate 2.000 cm apart. The pace between the plates is a vacuum. The potential difference across the plates is 300.0 V.
What kinetic energy does the electron have when it hits the positive plate?
An RLC circuit has a resistance of 2.0 k?, a capacitance of 8.0 µF, compute the phase shift between the current and the voltage
The concrete wall of a building is 0.136 m thick. The temperature inside the building is 22.3 °C, while the temperature outside is 0.0 °C. What is the emissivity of the wall
A sample of blood is placed in a centrifuge of radius 12.0 cm. At how many revolutions per second should the centrifuge be operated
A toy car with a mass of 120 g moves to the right with a speed of 0.40 m/s. A small child drops a 38.0-g piece of clay onto the car. What is the change in speed of the car
The area of a typical eardrum is about 5.0 × 10?5 m2. Calculate the sound power incident on an eardrum at the threshold of pain
One day the brakes fail just as the cable car leaves the top on its downward journey. What is the runaway car's speed at the bottom of the hill
A telescope can be used as a camera if the film is placed at the image position of the objective lens (or mirror); what is the angular separation of the two stars
A 12.0 g bullet is fired horizontally into a 106 g wooden block that is at first at rest on a frictionless horizontal surface and connected to a spring having spring constant 143 N/m.
A child on the merry-go-round is moving with a speed of 1.15 m/s when 1.10 m from the center of the merry-go-round.
A ball is at the top of a ramp that is 4.5 m above a table. If the ball rolls without friction, how fast is it going at the bottom of the ramp
It walks 2.4m along the boat toward shore and the nstops Assuming no friction between the boat and the water, find out how far the dog is then from the shore
An osprey’s call is a distinct whistle at 2200 {rm Hz}. An osprey calls while diving at you, to drive you away from her nest. You hear the call at 2300 {rm Hz}. Explain how fast is the osprey approaching?
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