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(a) Determine the power dissipated by the 2.0 Ω resistor.( note:R1=4.0 ohm,R2= 5 ohm and V=12 v)
(b) If the voltage from the battery remains constant throughout the operation of the circuit, and the battery lasts for 4 hours, how much stored potential energy did it have to begin with?
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.9×10-10 T. The wave passes perpendicularly during an open window, the area of which is 0.19 m2. How much energy does this wave carry dur..
A merry-go-round accelerates from rest to 0.71 in 21. calculate the net torque required to accelerate it
A boeling mass M and radius R is thrown so that theinstant it touches the floor it is moving horizontally with speedV=5m/s and is not rotating. find the time the ball slides
Select all that apply. Which is the following statements is true?
Show transcribed image text The photoelectric threshold frequency of cesium is 5.2 * 10^14 Hz. What is the minimum energy required to remove an electron from this element?
Lasers can be utilized to drill or cut material. One such laser generates a series of high-intensity pulses rather than a continuous beam of light. Each pulse contains 500mJ of energy and lasts 9.0ns. The laser fires 10 such pulses per second.
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.58 m, Calculate the power emitted by the human body
The depth of water behind the Hoover Dam in Nevada is 220 m. What is the water pressure at base of this dam? (Neglect the pressure due to the atmosphere.)
The length of a simple pendulum is 0.72 m and the mass of the particle (the "bob") at the end of the cable is 0.27 kg. What is the angular frequency of the motion
while standing in a low tunnel you push up on the ceiling with a force of 100N. your mass is 70kg. What force does the floor exert on you
a 2.60-g lead bullet at 32.0degc is fired at a speed of 210 ms into a large block of ice at 0degc in which it becomes
a 1000 N crate is being pushed across a level floor at a constant speed Vi=1.75 m/sec by a force of F=300N at an angle of theta=20 Degrees below horizontal. what is the final velocity of the crate
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