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The waves from a radio station can reach a home receiver with two different paths. One is a straight-line path from the transmitter to the home, a distance of 31.0 km. The second path is with reflection from a storm cloud. Suppose that this reflection takes place at a point midway among receiver and transmitter. If the wavelength broadcast with the radio station is425 m, find the minimum height of the storm cloud that will produce destructive interference among the direct and reflected beams. (Suppose no phase changes on reflection.)
A gas of 8.00×10^19 atoms or molecules has 1.10 Jof thermal energy. Its molar specific heat at constant pressure is 20.8 J/mol K. What is the temperature of the gas?
An pickup truck with mass 1.79 103kg is traveling eastbound at +14.1 m/s, Find the speed of the entangled vehicles after the collision
Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at a frequency of 3.6 MHz. at which constructive interference of two radio waves occurs
a new planet which has ten times the mass of the earth and four times the radius.a what is the acceleration due to
Wrongly called for a foul, an angry basketball player throws the ball straight down to the floor. what was the ball's greatest height above the floor
A test rocket is firedvertically upward from a well. A catapult gives it an initial speedof 79.8 m/s at ground level. Its engines then fire and itaccelerates upward at 4.10 m/s2 until it reaches an altitude of1060 m.
An object moves with constant acceleration 4.40 m/s2 and over a time interval reaches a final velocity of 12.4 m/s. what is its displacement during the time interval
A flywheel 0.400 m in diameter pivots on a horizontal axis. A rope is wrapped around the outside of the flywheel, and a steady pull of 80.0 N is exerted on the rope. What is the angular acceleration of the flywheel
The center of gravity of a 5 kg lower leg is 18 cm from the knee. When pivoted at the knee and allowed to swing, Find the moment of inertia of the lower leg
The wire is located in a uniform magnetic field B directed perpendicular to the wire. Compute the magnitude of B when the force on the wire due to B is 0.200 N.
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. What is the speed of the wreckage just after the collision
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture
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