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Water at 22.0 °C is sprayed onto 0.218 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that should be used?
A satellite has a mass of 99 kg and is located at 2.0 106 m above the surface of Earth. compute the potential energy associated with the satellite
The front and rear sprockets on a bicycle have radii of 8.67 and 5.55cm, respectively. Calculate the linear speed (in cm/s) of the chain as it moves between the sprockets
A future space station in orbit about the earth is being powered by an electromagnetic bean from the earth. The beam has a cross-sectional area of 135m2 and transmits and average power of 1.20*104W. What is the intensity of this beam, the maximum val..
a ferris wheel starts at rest and builds up to a final angular speed of 0.70 rad/s while rotating through an angular displacement of 4.9 rad. What is its average angular acceleration
An electron moving in one dimension is confined between two walls seperated by a distance L = 10^-10 m. What is the average force that the electron exerts on the walls
Consider a thin rod of mass 3.7 kg, length 1.8m and uniform density. The rod is pivoted at one end on a frictionless horizontal pin
On October 21, 2001, Ian Ashpole of the United Kingdom achieved a record altitude of 3.35 km (11,000 ft) powered by 600 toy balloons filled with helium. Estimate the total buoyant force on the 600 balloons
A cat is trying to jump onto a countertop that is 1m tall from 0.3m away. The cat's initial jump speed (magnitude of the total initial velocity) is 10m/s
the wire in the drawing carries a current of 9.3 a. suppose that a second long straight wire is placed right next to
A standing wave of 625 Hz is produced on a string that is 1.33 m long and fixed on both ends. If the speed of waves on this string is approximately 333 m/s, how many antinodes are there in the standing wave?
Fourteen moles of an ideal monatomic gas expand isothermally at a temperature of 75°C. what is the heat flow into the gas
consider a sphere with a charge uniformly distributed throughout its volume with somenbspdensity rho . find the field
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