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Astronomers observe a 60.0 * 10^6 Hz source both directly and by reflection from the sea. The receiving dish is 20.0m above the sea level. If the two waves interfere constructively at the location of the dish, what is the angle of the source above the horizon? Discover the smallest nonzero angle.
The electric potential in a certain area is given as: V = 3x^2 + 5yz. what is the electric field in the area
A wrecking ball (weight = 4400 N)is supported by a boom, which might be assumed to be uniform and has a weight of 3000 N. As the drawing shows, a support cable runs from the top of the boom to the tractor.
A light rod 1.00 meter in length rotates about an axis perpendicular to its length and passing through its center. Compute what is the system kinetic energy when its angular speed is 2.50 rad/s
Two parallel conductors carrying current in the same direction attract each other. If they are permitted to move toward each other, the forces of attraction do work. Where does the energy come from? Does this contradict the assertion in that magne..
A capillary tube with a closed end is place into water.
A hypodermic syringe contains a medicine with the density of water (see figure below). The barrel of the syringe has a cross-sectional area of 2.50 x 10^-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm.
A satellite of mass 200 kg is launched from a site on earth’s equator into an 200 km above the surface of earth (a) assuming circular orbit what is the orbital period of the satellite (b) what is the satellite speed in its orbit
Trucks with the noted masses moving at the noted speeds crash into barriers that bring them to rest with a constant force
A circular wire loop of area 0.18m squared carries a current of 4 A. the coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point the earth’s magnetic field is 1.2x10^-4 T direct..
A 5.00-kg partridge is suspended from a pear tree by an ideal spring of negligible mass. How much does the spring shorten
A monatomic ideal gas expands on a linear process such that P=3V + P1 ( initial pressure.) P1 and V1 are the initial pressure and initial volume
question1a woman is reported to have fallen 178 ft from a building landing on a metal ventilator box that she crushed
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