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Question: On an overcast day, the average electric field strength of the sunlight hitting your roof is 300 N/C.
Part A: How much electrical power can you get from an optimally aligned photovoltaic array (sunlight coming in perpendicularly) with an area of 4.5 m2 and an efficiency of 14 percent?
(in W)
Having trouble with this physics question, can you please explain with the answer.
A laser is aimed at the top of a pool of water. The beam makes an angle of 31 degrees to the normal to the water's surface. where will the light beam hit the bottom of the pool relative to its entrance point on the air-water interface
a 70.9 kg boy and a 43.2 kg girl both wearing skates face each other at rest on a skating rink the boy pushes the girl
A modern sculpture has a large horizontal spring, with a spring constant of 276 N/m, that is attached to a 49.0-kg piece of uniform metal at its end, By how much has the spring stretched in meters
The following waves are all fixed at the ends and all the stringsare identical and are under the same amount of tension. The variables in these situations , in addition to the length L, arethe amplitude and the number of nodes.
Determine the energy of the incident electron. How many coulombs of protons and electrons are in each penny.
A compact disk on a CD player rotates clockwise. The disk completes one revolution in 0.260 s. Find the angular velocity of the disk
A uniform electric field exists in a region between two oppositely charged plates. Determine what is the magnitude of the electric field
a at what distance from a 10w point source of electromagnetic waves is the electric field amplitude 120vm ?b at what
You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.51 times the passenger's weight. What is the maximum speed of the elevator
Seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile collision. Cars are designed with a "crumple zone" in the front of the car. Estimate the net force that ultimately stops the person
A simple ideal pulley system has a mechanical advantage of 14. How much force is required to lift a boulder of with a weight of 5,270 Newton
Assuming a typical efficiency for energy utilize by the body, how many slices of pizza should you eat to walk for 1.0 hr at a speed of 5.0 km/hr ? (Suppose your mass is 68kg.)
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