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Q. An electromagnetic wave strikes a 1.30cm2 section of wall perpendicularly. the rms value of the wave's magnetic field is 6.8x10^-4 T. how long does it take for the wave to deliver 1850 J of energy to the wall?
Q. A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the beam.
Find the total number of lines in a 2.90 wide diffraction grating whose third-order spectrum has the 640 hydrogen- spectral line at an angular position of 39.0.
Find out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth.
What is the physics behind everyday sayings
A submarine dives 90.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of submarine's displacement? (Imagine that upward and the direction of the submarine's horizontal motion is positive.)
A diverging lens (f = -12 cm) is located 20.0 cm to the left of a converging lens (f = 34.5 cm). A 3.00 cm tall object stands to the left of the diverging lens, exactly at its focal point.
What is kinetic energy of the shell
Find maximum height reached by the diver using the equation of motion.
A steel aircraft carrier is 385 m long when moving through the icy North Atlantic at a temperature of 1.65°C. By how much does the carrier lengthen whereas it is travelling in the warm Mediterranean Sea at the temperature of 23.30°C.
An airplane is flying with a velocity of 97.0 at an angle of 25.0 above the horizontal. while the plane is a distance 103 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog ..
A massless rod of length 1m has a 2.00 kg mass attached to one end and a 3 kg mass attached to the other. The system rotates about a fixed axis perpendicular to the rod that passes through the rod 30.0 cm from the end with the 3kg mass attached. The ..
Determine magnitude of the force from the ground on each front wheel. what is magnitude of the duck's velocity.
Find out line linking the two point charges
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