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A plane electromagnetic wave has an energy flux of 711 W/m2. A flat, rectangular surface of dimensions 100 cm × 24 cm is placed perpendicular to the direction of the wave. The surface absorbs half of the energy and reflects half. The speed of light is 2.99792 × 108 m/s.
a) Calculate the total energy absorbed by the surface in 1.1 min. Answer in units of J.
b) Calculate the momentum absorbed in this time. Answer in units of kg · m/s
A hydrogen atom (particle 1) is initially at rest. A neutron (particle 2) initially moves to the east at speed v, colliding with the hydrogen atom. Immediately after the collision, the neutron is moving to the south, and the hydrogen atom is moving a..
A beam of light crosses the interface between two media with an angle of incidence of 34.0° and an angle of refraction of 24.6°. What is the index of refraction of the first medium
A coiled wire forms a spiral with 243 turns, a diameter of 2.3 cm, and an unstretched length of 27 cm. Determine the self-inductance of the coil
Two vehicles are approaching an intersection. One is a 2300kg pickup traveling at 14.0m/s from east to west (the ?x- direction), What is the magnitude of the net momentum
A wooden raft has a mass of 92kg. When empty it floats in water (density 1000 kg/m3) with 48 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
q1. the flywheel of an engine has a moment of inertia 2.80 rm kg cdot rm m 2 about its rotation axis. what is its
Standard sea level pressure is approximately 1013 hPa andstandard surface temperature in the U.S Standard Atmosphere is 15degree C. What is the density of dry air under these conditions?
An astronaut leaves Earth in a spaceship at a speed of 0.960c relative to an observer on Earth. how long does the trip take
an electron in an x-ray machine is accelerated through a potential difference of 1.00 X 10^4 V, What is the kinetic energy of the electron
On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window. calculate the force exerted on the window by air pressure
a boat has a mass of 7920 kg. its engines generate a drive force of 3070 n due west while the wind exerts a force of
An electron in the hydrogen atom jumps from a level in which the energy is 1.89 eV higher than the energy of the final lower-energy level. What is the frequency of the light emitted in this transition
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