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AM radio signals have frequencies between 550 kHz and 1600 kHz (kilohertz) and travel with a speed of 3.0×108m/s.
What are the wavelengths of these signals?
On FM the frequencies range from 88 MHz to 108 MHz (megahertz) and travel at the same speed.
What are their wavelengths?
A 3m-long, 300 steel beams extend horizontally from the point where it has been bolted to the framework of a new building under construction. A 73 construction worker stands at the far end of the beam. What is the magnitude of the torque about poi..
A uniform solid sphere of radius 0.503 m and mass 15.7 kg turns counter clockwise (when viewed from above) about the vertical axis through its center. Find its vector angular momentum when its angular speed is 3.08 rad/s. Wouldn't you use the formula..
Calculate the thermal de Broglie wavelengths for helium-4 (boson) and helium-3 (fermion) gases at T = 5K
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. When supporting an 88 kg climber, the rope elongates 1.80 m. Find its Young's modulus.
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 532 and has a speed of 25.5. The motorcycle has a speed of 12.50. What frequency does the motorcyclist hear in this case?
The outside mirror on the passenger side of a car is convex and has a focal length of -7.7 m. Relative to this mirror, Find the image distance of the truck.
A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
A certain car is capable of accelerating at a rate of 0.52 m/s2. How long does it take for this car to go from a speed of 27 mi/h to the speed of 33mi/h.
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
An object is located 8.00 cm from a converging lens that has a focal length of 10.0 cm. The height of the object is 0.41 cm. What is the height hi of the image
An eagle is flying horizontally at 5.7 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?
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