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A 1.50-kg iron horseshoe initially at 670°C is dropped into a bucket containing 22.0 kg of water at 26.0°C. What is the final temperature of the water–horseshoe system? Ignore the heat capacity of the container and assume a negligible amount of water boils away.
A light bulb is rated at 60W, 120 V. how many electrons flow through the bulb per second and find the resistance of the bulb
The strongest person in the world lifted th read end of his car a mass of 615 kg a verticle distance of .24 meters. How much work did he do to life the car
A wave has angular frequency 135 rad/s and wavelength 1.70 m. Calculate the following values of the wave. estimate the angular wave number
An electron with kinetic energy 1.36 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 24.0 cm. Find the frequency of circling
The pressure of a garden hose is 2 atmospheres. If the cross-sectional area of the hose is 4 cm^2 and the nozzle output area is .4cm^, How fast does the water leave the hose
A person stands on the edge of a cliff. She throws three identical rocks with the same speed. Rock X is thrown vertically upward, rock Y is thrown horizontally, which rock hits the ground with the highest speed
A 0.43 kg soccerball is kicked with a velocity of 25 m/s at an angle of 37 degrees above the horizontal. What is the kinetic energy at the peak of its trajectory
a film of index of refraction of 1.4 and thickness of 1.2*10^-5 m is on a lens with an index of refraction of 1.6. find the path length difference between the two reflected rays
A simple gaussmeter for measuring horizontal magnetic fields consists of a stiff 42 cm wire that hangs from a conducting pivot, What is the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 0.04 T and the..
If the electric field strength in air exceeds 3.0 multiplied by 106 N/C, the air becomes a conductor. Using this fact, determine the maximum amount of charge that can be carried by a metal sphere 3.1 m in radius.
We have a container of compressed air. Assume that air is diatomic ideal gas. The volume of the container is 1.35 liters. Find the final volume of the gas
A space probe is fired as a projectile from the Earth's surface with an initial speed of 1.78 x 10^4 m/s. What will its speed be when it is very far from the Earth
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