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A boat heads directly across a river. Its speed relative to the water is 3 m/s. It takes it 539 seconds to cross, but it ends up 662 m downstream. How fast is the boat going relative to the bank of the river?
The potential difference between the surface of a 3.1 cm diameter power line and a point 1.8 m distant is 5.0 kV. What is the line charge density on the power line
Which of these do you think would allow sound to travel fastest? Explain the answer. Give two reasons - one relating to the density of molecules and the second to the elasticity of your choice - air, water, solid wood. Confirm to specifically stat..
An archer puts a 0.33 kg arrow to the bowstring. An average force of 183 N is exerted to draw the string back 1.3 m. suppose that air resistance is negligible.
After a 0.839 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.48E+6 m/s. Through what angle was the photon scattered
A bus makes a trip according to the position time graph shown in the drawing. Find the average velocity (magnitude & direction) of the bus during each of the segments labelled A, B, & C?
Nichrome wire is used in some radiative heaters. What power will it draw when first switched on
An ideal monatomic gas at first has a temperature of 311K and a pressure of 7.57atm. It is to expand from volume 571 cm3 to volume 1390 cm3.
A cube of mass m1 = 8.8 kg is sitting on top of another cube of the same size, What is the magnitude of the normal force with which the bottom cube is acting on the top cube
federal statute requires that a car's bumper be designed to withstand a 2.50 mph (1.12m/s) collision with an immovable object without damage to the body of the car. Calculate the average force on a bumper
After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. what is the age of the ancient site
Two fixed point charges are located along the x axis. A +8.5uC charge is placed at x=+3 cm and a -21uC is placed at x=9.0 cm.
A ray of light is incident on the surface of a block of clear ice at an angle of 33.0° with the normal. Find the angle between the reflected and refracted light
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