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Which requires more heat- a kg of air raised 20degrees celsius to 30 degrees celsius or a kg of aluminum raised from 20 degrees celsius to 30 degrees celsius?
A 1.7 kg mass is held at rest on top of a frictionless and horizontal table. A light string loops over a pulley which is in the shape of a 10 cm radius solid disk which has a mass of 1.7 kg. The light string then supports a mass of 1.7 kg which is..
The weight of passengers on a roller coaster increases by 53% as the car goes through a dip with a 35m radius of curvature
At which angle will the photon scatter with respect to its original direction? (The accepted unit abbreviations for angles are either 'deg' for degrees or 'rad' for radians.)
A uniform electric field of magnitude 430 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.60 cm. find the work done by the field on the electron
The hydraulic lift in a service station is capable of raising cars with a mass up to 2000kg. calculate the diameter of the driving piston if the lifting is to be accomplished with a force not to exceed 100N
Spacing in most book are generally done in units of points andpicas: 12 points = 1 pica, and 6 picas = 1 inch. If a figure wasmisplaced in the page proofs by 1.30 cm, what was the misplacement in both picas and points?
Let B = 5.10 m at 60°. Let vector C have the same magnitude as vector A and a direction angle greater than that of vector A by 25°. Find the magnitude and direction of vector A
A 40 kg child sits in a swing suspended with 2.5 m long rope. Use energy conservation to determine the speed the child will have at the bottom of the arc when she is let go
a certain radioisotope has a half-life of 7.45 days. what percentage of an initial sample of this isotope remains after
a man scientist decides to build a machine that will use a 0.5 tesla magnetic field to make electrons charge 1.6 x
It runs out of fuel at the end of the 4.97 s but does not stop. Explain how high does it rise above the ground?
Three moles of an ideal monatomic gas are at a temperature of 345 K. What is the change in the internal energy of the gas
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