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Monochromatic light is incident on a metal surface. The ejected electrons give rise to a current in a circuit. The maximum energy of the ejected electrons is determined by applying a reverse ("stopping") potential, sufficient to reduce the current in the ammeter to zero. If the intensity of the incident light is increased, how will the required stopping potential change?
A person pushes with a force of 10.0 N on a stick pin to try to push it into a bulletin board. find the average pressure (in Pascals) on the board at the tip of the pin
A lighted candle is placed 36 cm in front of a converging lens of focal length f1= 13 cm, calculate the position and relative size of the final image
A series ac circuit contains a 190 ohms resistor, a 14.0 mH inductor, a 4.50uF capacitor, and an ac power source of voltage amplitude 45.0 V operating at an angular frequency of 360 rad/s
An object is dropped from rest from a height of 4.1 multiply.gif 107 m above the surface of the Earth. what is its speed when it strikes the Earth?
A series circuit is made up of a 400 ohm resistor, a 3 henry inductor and a 8 microfarad capacitor all placed in series. Determine the steady state current flowing in this circuit
White light illuminates an oil film on water. Viewing it directly from above, What is the refractive index of the oil
A railroad car of mass 2.4 104 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
When the space shuttle (mass of the shuttle=2*10^6kg) was at the outer limit of Earth's atmosphere (distance= 350km above Earth's surface), astronauts measured the gravitational force from Earth to be equal to 1.7*10^7 newtons. Find the gravitatio..
A daredevil jumps a canyon 11.8 m wide. To do so, he drives a car up a 20° incline. What minimum speed must he achieve to clear the canyon
What is the kinetic energy
A .450 kg ice puck, moving east with a speed of 3m/s, has a head-n collision with a .900 kg puck initially at rest. Assume a completely elastic collision, what will be the speed and direction of each object after collision.
A copper flask with a volume of 80 cm^3 is filled to the brim with olive oil. If the temp of the system is increased from 8C to 52C, how much oil spills
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