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A. 1.6m long string fixed at both ends vibrates at resonant frequencies of 780hz and 1040hz, with no other resonant frequency between those values. What is the fundamental frequency of this string?
Two moles of an ideal gas undergo a reversible isothermal expansion from 3.10×10^?2m^{3} to 5.00×10^?2m^{3} at a temperature of 27.0C. What is the change in entropy DeltaS of the gas
An emf is induced in a conductin loop of wire 1.03 m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if change in shape occurs in 4.15s and the local 0.131-T magnetic field is vertical to the pla..
A spaceship of mass 2.3×10^6kg is cruising at a speed of 6.0×10 ^6m/s when the antimatter reactor fails, blowing the ship into three pieces. What is the direction of the third piece
Find the acceleration of gravity on the surface of Mercury and find the acceleration of gravity on the surface of Venus.
When high-energy, charged particles move through a transparent medium with a speed greater than the speed of light in that medium, a shock wave, or bow wave, of light is produced. Calculate the speed of the electrons in the water
A person jumps up and down on a trampoline, while staying in contact with it. The motion is simple harmonic motion and it takes 1.90s to complete one cycle.
A hoodlum throws a stone vertically downward with an initial speed of 12.3 m/s from the roof of a building, 24.0 m above the ground. How long does it take the stone to reach the ground
A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal. How much work is done by the gravitational force
Suppose that the voltage of the battery in the circuit is 3.2 V, the magnitude of the magnetic field (directed perpendicularly into the plane of the screen) is 0.65 T, find the maximum speed attained by the rod after the switch is closed
A source emits sound of wavelength 2.54m an 2.74m in air. Use the speed of sound=343m/s. a) Write the equations of these two traveling waves in complex exponential notation as a function of wave speed and number.
Suppose you decide to travel to a star 85 light-years away at a speed that tells you the distance is only 10 light-years
A person pulls a 26kg suitcase using a rope attached to the suitcase at an angle of 28 degrees to the horizontal. The coefficient of static friction of the suitcase with the floor is 0.3 and the coefficient of kinetic friction is 0.20.
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