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Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is 3.8 m long, its mass is 1.5 kg, and the force exerted by the children is 43.5 N. What is the speed of the waves on the rope?
A 0.20 kg body undergoes simple harmonic motion of amplitude 9.7 cm and period 0.20 s. What is the magnitude of the maximum force acting on it
A cylinder containing an ideal gas has a volume of 2.0 m3 and apressure of 1.0 × 105 Pa at a temperature of 300 K. Thecylinder is placed against a metal block that is maintained at 900K and the gas expands as the pressure remains constant until th..
A series RLC circuit has R = 75 %u03A9, L= 20 mH, and a resonance frequency of 4.0 kHz. What is the impedance of the circuit at resonance
Two long parallel wires each carry 2.8A in the same direction, with their centers 1.5cm apart.Find the magnitude of the force of interaction (per length) between the wires.
A certain radioisotope has a half-life of 8.57 days. What percentage of an initial sample of this isotope remains after 28 days?
500 kg satellite moves in a circular orbit of 4.8 x 106 m above the surface of the earth. What is the orbital speed of the satellite
The circuit in the figure below consists of wires at the top and bottom and identical metal springs in the left and right sides. estimate the magnitude of the magnetic field
A plastic bag is filled with hydrogen at atmospheric pressure and 23.0 oC. what is the required volume of the balloon if the air inside can be maintained at 43.0 oC
What happens to water that flows out of a pipe at constant pressure (or constant flow rate), and then enters a restriction in the pipe (goes from a fat pipe to a thin pipe, but the pressure in the fat part of the pipe stays the same:
A projectile is shot on level ground with a horizontal velocity of 20 m/s and a vertical velocity of 42 m/s. Obtain how much time is the projectile in the air
you are traveling on a plane. the velocity of the plane with respect to the air is 140 ms due east. the velocity of the
The four tires on the author's car are inflated to an absolute pressure of 2.7x10^5 Pa. obtain the contact area between each tire and the ground
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