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A block of wood floats in fresh water with two-thirds of its volume V submerged. It floats in another liquid with 0.620 V submerged. Find the density of
(a) the wood, and
(b) the liquid.
500 J of work are completed to compress the gas while, in the same process, 1400 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules.
Given you have a 1000 kg automobile with an Otto cycle engine, compression ratio of 10. estimate the real engine losses due to friction and drag
Conservation of energy tells us that energy cannot be created or destroyed. Clearly, energy is required for radioactivity to occur. Where is this energy coming from?
Proton one moves twice as fast as proton two. The magnitude of the magnetic field in which proton one is immersed is twice the magnitude of the magentic field in which proton two is immersed.
A proton is located at x = 1.0 nm, y = 0.0 nm and an electron is located at x = 0.0 nm, y = 4.0 nm. Find the attractive Coulombic force between them
A vertical scale on a spring balance reads from 0 to 225. The scale has the length of 11.5 from the 0 to 225 reading. A fish hanging from the bottom of the spring oscillates perpendicularly at a frequency of 3. Ignore the mass of the spring, what ..
In one cycle, a heat engine does 310 J of work and releases 620 J of heat to a lower-temperature reservoir. What is the efficiency of the engine
Standing on the surface of a small spherical moon whose radius is 6.81·104 m and whose mass is 7.07·1018 kg, What maximum height above the surface of the moon will the rock reach
A gasoline engine fuel burns at a temp of 500 degrees Celsius. Its radiator cools to 70 degrees celsius. What is the engines Carnot efficiency
A flashlight on the bottom of a 3.70 m deep swimming pool sends a ray upward at an angle, What angle (in air) does the emerging ray make with the water's surface
q1. in the 1950s an experimental train that had a mass of 2.30 x 104 kg was powered across a level track by a jet
What is the total force on the bottom of a swimming pool (20m by 10m), if the pool has an average depth of 1.50 m
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