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A neodymium-glass laser emits short pulses of high-intensityelectromagnetic waves. The electric field of such a wave has an rmsvalue of Erms = 6.50 x 109 N/C. What is the average power ef each pulse that passes through a 2.70 10-5 m2 surface perpendicularto the beam?
An AC generator is connected across a single circuit element and supplies a peak voltage of 250 V. The peak current through the element is 6.1 A. What is the rms current through the circuit element?
a 196-g aluminum calorimeter contains 582 g of water at 18deg c. a 92-g piece of ice cooled to -18deg c is placed in
Dan is gliding on his skateboard at 2.00m/s . He suddenly jumps backward off the skateboard, How fast is Dan going as his feet hit the ground
a spherical non-conducting shell of inner radius r1 10 cm and outer radius r2 15 cm carries a total charge q 15 oc
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V, What is the breakdown potential of this capacitor
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
A 170, 35.0 cm-diameter turntables rotate on frictionless bearings at 53.0. A 20.0 block sits at the center of turntable. A compressed spring shoots the block completely outward along a frictionless groove in the surface of the turntable.
A 500kg pig is standing at the top of a muddy hill on a rainy day. What is the pig's speed at the bttom of the hill
The intensity of sunlight striking Earth's upper atmosphere (called the solar constant) is 1.35 kW/m2. Find the radiation pressure at the surface of the sun
In the Bohr model of the hydrogen atom, an electron in the 6th excited state moves at a speed of 6.08 104 m/s, What is the effective current associated with this orbiting electron
Suppose a car accelerates from rest, speeding up at a rate of +2.5m/s^2 while traveling a distance of 79 meters. How much time did it take the car to travel its TOTAL distance
Take the mass of the sun to be m_s = 1.99×1030 {rm kg}, gravitational constant to be G = 6.67×10-11 {rm N} cdot {rm m^2/kg^2}, and an acceleration due to gravity at the earth's surface to be g = 9.810 {rm m/s^2}.
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