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A HeNe (Helium-Neon) laser has a beam power of 5.00 mW at a wavelength of 656 nm. Assume the beam is focused by a lens to a circular spot whose effective diameter is 15 wavelengths of the light.
a) What is the intensity of the focused beam?b) What is the radiation pressure exerted by the focused beam on a perfectly absorbing surface?c) How much momentum is carried by a 1 meter length of the focused beam?
Blue light of wavelength 450 nm passes through a 0.20-mm wide slit and illuminates a screen 1.2 m away. How wide is the central maximum of the diffraction pattern
Suppose you hold a f=5.0 cm magnifying glass 3.0 cm from a 2.0 mm high ant. how large is the image of the ant
A uniform brass disk of radius R and mass M with a moment of inertia I about its cylindrical axis of symmetry is at a temperature T = 37 °C. Determine the fractional change in its moment of inertia
A 52.5 g Super Ball travelling at 30 m/s bounces off a brick wall and rebounds at 16.0 m/s. A high-speed camera records this event. If the ball is in contact with wall for 3.25 ms, what is the magnitude of the average acceleration of ball during t..
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.06 X 106 V, What is the speed of the ?-particle
A pilot flies an airplane at a constant speed of 520 km/hr in the vertical circle of radius 1400 m. compute the force exerted by the seat on the 105-kg pilot at point A and at point B.
A 69N box of clothes is pulled 8.9 m up a 30° ramp by a force of 100 N that points along the ramp. If the coefficient of kinetic friction between the box and ramp is 0.22, compute the change in the box's kinetic energy.
Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?
Mark pushes his broken car 150m down the block to his friend's house. He has to exert a 110N force to push the car at a constant speed. How much Thermal Energy is created
Knowing the temperature at the surface of the Earth to be 72 F, find the temperature at the surface of Venus. ( show your work step by step.)
The average depth of Earth's oceans is 2.236 mi. Suppose 68% of the earth is covered in water and that the population of the earth is 6.33 billion. (a) How much water mass on the surface of earth is there per person and (b) to help visualize it, w..
Covelant and ionic bonds differ in that:
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