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The conversion factor to convert from inches to centimeters is 2.54 cm = 1 inch (exact -- infinitely many significant figures). Likewise, there are exactly 12 inches in one foot and exactly 3 feet in one yard. How many meters are in 100 yards?
A 100-W driveway light bulb is on 10 hours per day. Assuming thepower company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.
In 4 to 5 billion years, the Sun is expected to enter a red giant phase, in which its outer layers will gradually expand out beyond Earth's present orbit. If the Sun's angular momentum is conserved as it expands, and its mass doesn't change, will its..
An ion having charge +6e is traveling horizontally to the left at 8.30 km/s when it enters a magnetic field that is perpendicular to its velocity and deflects it downward with an initial magnetic force of 7.04 x 1015 Newton
A roller coaster car is going over the top of a 12-m-radius circular rise. How fast is the coaster moving
A 460-Hz tuning fork causes resonance in the tube depicted in the figure below when the length L of the air column above the water is 18.3 and 55.8 cm, Find the speed of sound in air
A 2kg mass is loaded into a spring cannon. The cannons spring has a constant k=4000N/m and the spring is compressed 0.8m. The mass is initially at rest. what is the initial velocity of the mass
The magnetic force exerted on a 1.3-m segment of straight wire is 1.5N . The wire carries a current of 3.2A in a region with a constant magnetic field of 0.52T. What is the angle between the wire and the magnetic field?
A person is making homemade ice cream. She exerts a force of magnitude 18 N on the free end of the crank handle on the ice-cream maker, what is the average power being expended
an object is acted on by a drag force with a magnitude that is proportional to the speed. the object accelerates
two resistors 54.6 and 83.9? are connected in parallel. the current through the 83.9-? resistor is 2.84a. a determine
The radius of the aorta is about 1.0cm , and the blood passing through it has a speed of about 46cm/s, Calculate the pressure drop per cm along the aorta.
Particle A andparticle B are held together with a compressed springbetween them. When they are released, the spring pushes them apart,and they then fly off in opposite directions, what are the kinetic energies of each particle
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