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On his honeymoon, James Joule attempted to explore the relationships among various forms of energy by measuring the rise of temperature of water which had fallen down a waterfall on Mount Blanc. What maximum temperature rise would one expect for a waterfall by a vertical drop of 21.0 m?
A 9.0 ohm resistor and a 6.0 ohm resistor are connected in series with a power supply. Find the voltage setting of the power supply
An astronaut weighs 85 N on the Moon, where the acceleration of gravity is 1.62 m/s2. How much (in N) does she weigh on Earth
The lines in a grating are uniformly spaced at 1520nm. Analyse the angular separation of the second order bright fringes between light of wavelength 603nm and 615.4 nm. Reply in units of mrad.
a moving beltway at an airport has a speed v1 and a length l. a woman stands on the beltway as it moves from one end to
A geologist finds that a Moon rock whose mass is 10.15 kg has an apparent mass of 5.68 kg when submerged in water. What is the density of the rock
A massless rope connects two blocks through a frictionless pulley with a moment of inertia I = 0.4 kgm 2 and a radius R = 0.2 m. Find velocity of the second block just before it hits the ground
A 2000 kg car is traveling at a constant 15.0 m/s down a long mountain grade of 2.0%. The mountain road is 5.0 km long. What is the increase in the temperature of the brakes
A firefighter mounts the nozzle of his fire hose a distance 40.1 m away from the edge of a burning building so that it sprays from ground level at a 45° angle above the horizontal. By what factor was the nozzle diameter changed
What mass (in grams) of steam at 100°C must be mixed with 403 g of ice at its melting point, in a thermally insulated container, to create liquid water at 87°C? The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg, and..
A Carnot engine operates between the temperatures 420K and 300K, How much heat is discarded to the cold reservoir as this work is done
In an interstellar gas cloud at 48.2 K, the pressure is 1.16 x 10-8 Pa. what is their mean free path
How many rulings should a 4.0cm wide diffraction grating have to resolve the wavelengths 415.496 nm and 415.487 nm in the secondoreder? At what angle is maximum intensity found?
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