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A He-Ne laser beam with an intensity of 1.00 x 103 W/m2 is incident from air to water, perpendicular to the surface of the water. Find the intensity of the beam transmitted into the water.
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). The transformer is to deliver 2000 kW to the factory at 95% efficiency. Find values for the the power delivered to the primary
What is the magnitude of the force applied throughout this time? What is the direction of the force applied throughout this time?
A rectangular barge, 4.0 m long and 1.5 m wide, floats in fresh water. (a) Find out how much deeper it floats when its load is a 380-kg horse. (b) If the barge can only be pushed 15 cm deeper into the water before water overflows to sink it, how m..
He slides so that his speed is zero just as he reaches the base. Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
A 2.0cm -tall candle flame is 2.0 m from a wall. You happen to have a lens with a focal length of 42cm, For each location, what is the height of the image
Two projectiles are thrown with the same initial speed, one at an angle with respect to the level ground and the other at angle 90 degree. Both projectiles strike the ground at the equivalent distance from the projection point. Are both projectiles i..
A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19m/s. What is the change in the momentum of the ball.
For a damped oscillator with a mass of 180 g, a spring constant 58 N/m and a damping coefficient of 60g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 26 cycles.
what must be his average speed if he is heading 30.0° south of west for the remaining 54.6 min? mi/h (b) What is his average velocity for the entire trip?
Express the velocity of the puck in the unit vector(i,j) notation and in the magnitude and angle notation. Vx = 0.026m/s Vy = 0.053m/s And then find the momentum of the puck
Using the kinematic equation, prove that if two balls are released simultaneously from table, one with zero velocity and the other with a horizontal velocity, they would both reach the ground at the identical time.
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