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A turtle and a rabbit are to have a race. The turtle's average speed is 0.9 m/s. The rabbit's average speed is 9 m/s. The distance from the starting line to the finish line is 1500 m. The rabbit decides to let the turtle run before he starts running to give the turtle a head start. What, approximately, is the maximum time the rabbit can wait before starting to run and still win the race?
A light string can support a stationary hanging load of 23.0 kg before breaking. What range of speeds can the object have before the string breaks
A 2-m string with a mass of 100 g has an applied tension of 100 N while it is plucked. How long does it take the resulting wave to go from one end of the string to the other?
A large roller in the form of a uniform cylinder is pulled by a tractor to compact earth. The cylinder has dimeter of 1.80 m and mass of 10,000 kg. If frictional losses can be ignored, what average power must the tractor provide to accelerate it from..
A 195 W (121 V) night light is turned on for an average 6.5 hr a day year round. What is the annual cost of electricity at a billing rate of $0.07 per kWh
A human-sized version of the popular "hamster wheel" is shaped like a cylindrical shell and has a radius of 2.25 m. A person running on the wheel applies a horizontal force of 148 N to the bottom of the wheel. What torque does he supply
a net force along the x-axis that has x-component fx -12.0n 0.300nm2x2 is applied to a 5.00 kg object that is
Briefly, how are covalent compounds formed? What is the basic difference distinguishing single, double, and triple bonds? How does electro negativity vary, in general, left to right across a period and down a group?
An 91 kg man climbs a 981 m high mountain in 1.01 hour and uses 7.6 kcal/min, Determine the power consumption in watts.
The average coefficient of volume expansion for carbon tetrachloride is 5.81 multiplied by 10-4 (°C)-1. If a 48.5 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the tem..
a square loop of dimensions 2a x 2a lies in the xy plane with its center at the origin and sides parallel to the x and
Two polarizers are oriented at 38 degrees to one another. Light polarized at a 19 degree angle to each polarizer passes during both. What percent reduction in intensity takes place?
The equation of a transverse wave traveling along a very long string is given by y = 6.9 sin(0.025(pi)x + 4.5(pi)t), Determine the transverse displacement
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