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A neodymium-glass laser emits short pulses of high-intensity electro magnetic waves. The electric field of such a wave has an rmsvalue of Erms=2.0E9 N/C. Find the average power of each pulse thatpasses through a 1.6E-5 m2 surface that is perpendicularto the laser beam.
Galileo's great-great-great grandchild stands at the top of a vertical tower 53.4 m tall with a Chianti bottle, What is the velocity of the bottle as it hits the ground, if it was just dropped from the tower
a 5-kg block is sent sliding across a frictionless table at a speedof 0.75 ms. it strikes the free end of an ideal
A ball is thrown upward from a platform 4.0 m high with a speed of 23 m/s at an angle of 37 o from the horizontal. What is the magnitude of its velocity when it hits the ground?
A circular coil enclosing an area of 200 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 3.0 ?, what is the average current in the coil during that time
300g of water at 30 c if each gram gains 3.7 calories of heat, what i the final temperature, how much heat gained by the system
A light plane attains an airspeed of 370 km/h. The pilot sets out for a destination 800 km to the north but discovers that the plane must be headed 10° east of north to fly there directly. What was the j-component of the wind velocity vector
0.20g of hydrogen gas are held in a rigid container. The temperature of the gas is changed from 50 K to 80 K. How much heat is needed.
Two sounds have intensities of 2.10×10-8 and 8.70×10-4 W/m2 respectively. What is the magnitude of the sound level difference between them in dB units
A 49g marble moving at 1.9m/s strikes a 24g marble at rest. What is the speed of the first marble immediately after the collision
Unpolarized light with intensity I0 is sentrst through a polarizer with the polarizing axis aligned in the vertical direction, and then through a second polarizer with the polarizing axis oriented 30° from the vertical. What is the intensity of the o..
If a drop is to be deflected a distance = 0.28 by the time it reaches the end of the deflection plate, what magnitude of charge should be given to the drop? Imagine that the density of the ink drop is 1000 and ignore the effects of gravity.
A cylindrical solenoid of 0.4m length has a diameter of 10mm and 250 tightly wound turns of wire uniformly distributed along its length. Around the middle of the solenoid is a 2-turn rectangular loop 3 x 2 cm2 in size, entirely made of resistive w..
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