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A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.900 s to reach the opposite tower, 20.0 m away. If a 1 meter length of the rope has a mass of 0.265 kg, find the tension in the tightrope.
You notice you are running low on gas in your 1200kg car, and you are hoping you have enough gas to reach the bottom of the hill. what will your speed be at the bottom of the hill
A horizontal force of 80N is required to push a piece of furniture across a floor at a constant velocity, what is the net force acting on the furniture
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 108 MeV, How many nuclei are in the beam
A runner accelerates to a velocity of 4.15 m/s due west in 1.50s. His average acceleration is 0.640 m/s^2, also directed due west. What was his velocity when he began accelerating.
the latent heat of fusion for water is 33.5 times 104 jkg while the latent heat of vaporization is 22.6 times 105 jkg.
A spaceship is approaching a space station at a speed of 2.55 multiply.gif 105 m/s. What is the frequency of the beacon observed on the spaceship
A pitcher throws a baseball vertically upward with an initial speed of 15.0 m/s, releasing the ball when it is 2.00 above the ground, How long is the ball in the air
A machine shop grinding wheel accelerates from rest with a constant angular acceleration of 2.5rad/s^2 for 6.9s, Find the total number of revolutions turned
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 150 cm, Find the magnitude and direction of the second displacement
A 5.22-kg object is attached to the bottom of a vertical spring and set vibrating. the maximum speed of the object is 15.3cm/s and the period is 645ms. find (a) the forse constant of the spring, (b) the amplitude of the motion, and (c) the frequency ..
A planet of mass 7*10^24 is at location m A star of mass 8*10^30 is at location m. What is the force exerted on the planet by the star ?
A 0.600 mole sample of an ideal gas is at a temperature of 303 K at atmospheric pressure. Calculate the volume occupied by the gas
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