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A spring with a force constant of 3.5 x 104 N/m is initially at its equilibrium length.
(a) Compute how much work must you do to stretch the spring 0.050 meter?
(b) Obtain how much work must you do to compress it 0.050 meter?
You take a trip to Pluto and back (round trip 11.5 billion km), traveling at a constant speed (except for the turnaround at Pluto) of 44500 km/hr. How long does the trip take, in hours, from the point of view of a friend on earth
Suppose the end of your finger is charged, Estimate the breakdown voltage in the air for your finger
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. Calculate the mass of the aluminum cup
question the light intensity incident on a metallic sur- face with a work function of 2.03 ev produces photoeletrons
A satellite moves in a circular orbit around Earth at a speed of4567 m/s. Determine the satellite's altitude abovethe surface of Earth
Some clear food wraps can be tightly stretched over a container and folded down the sides and they will retain the tension and complete secure of the container. The food wraps stick. How do they do these.
A physics student wants to cool a glass of Diet Cola (mostly water), initially at 27°C, by adding ice initially at -18°C. If there is 250g of Diet Cola in the glass, how much ice must they add so that the final temperature will be 0°C?
A rotational inertia for a driver in a pike position is about 15.5 kg*m^2; it is only 8.0 kg*m^2 in a tuck position. How many in a pike position
a beam of neutral hydrogen atoms with a speed of 104 ms along the x-axis enters a 1 m long region where there is an
Two long parallel wires carry currents of 3.85 A and 4.31 A. The magnitude of the force per unit lengh acting on each wire is 3.77 Ã- 10-5 N/m
In a room that is 2.35 m high, a spring (unstrained length = 0.22 m) hangs from the ceiling. A board whose length is 1.97 m is attached to the free end of the spring. The board hangs straight down, so that its 1.97-m length is perpendicular to the..
A chamber with a fixed volume of 1.0 m3 contains a monatomic gas at 3.00 x102 K. The chamber is heated to a temperature of 6.00 x102 K. This operation requires 20.0 J of heat. (Suppose all the energy is transferred to the gas.) How many gas molecules..
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