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A circus performer stretches a tightrope among 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 0.905 s to reach the opposite tower, 20.0 m away. If a 1 meter length of the rope has a mass of 0.430 kg, discover the tension in the tightrope.
A hunter fires a rifle and shoots a 4.20-g bullet at 965 m/s. The mass of the hunter (including rifle) is 72.5kg. Ignore friction and compute: The recoil velocity of the hunter and the rifle if the rifle is fired horizontally.
The rms speed of molecules in a gas at 40.0°C is to be increased by 1.8 percent. Determine to what temperature must it be raised
A particle with a charge of ?1.0 ?C and a mass of 2.4 10-6 kg is released from rest at point A and accelerates toward point B, What is the potential difference VB ? VA between A and B
An airplane of mass 1.50 x 10^4 kilogram is moving at 60.0 m/s. Calculate the speed of the plane after it as traveled 5.00 x 10^2 meter
In an action-adventure film, the hero is supposed to throw a grenade from his car, which is going 94.0 km/h, to his enemy's car, which is going 112 km/h. Find the magnitude of the velocity relative to the earth
The eyepiece of a microscope has a focal length of 1.25 cm and the objective lens focal length is 1.62 cm. what is the angular magnification of the microscope
An oil well is 10,000 ft deep. It is shut-in at the wellhead. What is the gauge pressure of the oil at the wellhead, before the valve
An 1100 N crate is being pulled across a level floor by a force F of 315 Newton at an angle of 24 degree above the horizontal. Evaluate the magnitude of the acceleration of the crate
A stonewith a mass of 2.40-kg is released from rest and falls toward Earth (near the surface of the Earth). Use the impulse-momentum theorem to compute its momentum after falling for 4.00 seconds.
A step up transformer is used on a 110 Volt line and supplies a load with 2.0 A. Calculate the secondary voltage, the primary current, and the power output
the potential energy at x 8 m is -2000 v and at x 2 m is 400 v. what is the magnitude and direction of the electric
A 30 kg brick is completely submerged insaltwater and displaces an amount of saltwater weighing 17.4 N. Determine the buoyant force on the brick
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