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Suppose the total power of a laser beam (optical output power) is 0.5 x 10-3 W. If 46 percent of that power is inside a square 0.07 m on a side, what is the average intensity of light within the square?
A student holds a tuning fork oscillating at 260 Hz. He walks towards a wall at a constant speed of 1.16 m/s. How fast must he walk away from the wall to observe a beat frequency of 4.50 Hz
2.50 moles of a monatomic ideal gas expand adiabatically from an initial temperature of 300K and an initial volume of 80.0 L to a final volume of 150.0 L
Frames S and S' are moving relative to each other along the x and x' axes. They set their clocks to t = t' = 0 when their origins coincide, Compute the spacetime interval ?s between the events
Satellite orbits the earth at a distance equal to twice the earth's radius above the surface of the earth (the total distance from the center of the earth is three times the radius of the earth).
In Niels Bohr's 1913 model of the atom, the electron is in a circular orbit around a nucleus. What is the magnitude of the magnetic moment due to the electron's motion
A solid cylinder of mass M = 2.59 kg is released from rest at the top of an incline of height H= 1.99 m and rolls without slipping to the bottom. Calculate the speed of the cylinder's center of mass at the bottom of the ramp
The model airplane in Figure 5.7 is flying at a speed of 13.2 m/s on a horizontal circle of radius 17.9 m. The mass of the plane is 1.18 kg. What is the net work done on the plane
A parallel plate capacitor with plates of area 320 cm.^2 is charged to a potential difference V and is then disconnected from the voltage source, What is the charge on the positive plate of the capacitor
When viewed in a spherical mirror, the image of a setting sun is a virtual image. The image lies 12 cm behind the mirror. (a) What is the focal length of the mirror
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower. At top speed the planes fly at a 59.0 o bank approximately 12.0 m from the tower, Calculate the speed of the planes
A mouse is running away from a cat at 0.75 m/s and, at 1.25 m from his mouse hole, he accelerates at a constant rate of 0.25 m/s2 until he reaches his hole safely. How long a time was required for him to cover the last 1.25 m?
A projectile is shot from the edge of a cliff h = 305 m above ground level with an initial speed of v0 = 155 m/s at an angle of 37.0° with the horizontal. Find the maximum height above the cliff top reached by the projectile
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