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A cab driver picks up a customer and delivers her 1.80 km away, on a straight route. The driver accelerates to the speed limit and, on reaching it, begins to decelerate all at once. The magnitude of the deceleration is four times the magnitude of the acceleration. Discover the lengths of the deceleration and acceleration phases.
Two lightweight rods 24 {rm cm} in length are mounted perpendicular to an axle and at 180 ^circ to each other. At the end of each rod is a 480 {rm g} mass. The rods are spaced 42 {rm cm} apart along an axle. The axle rotates at 4.90 rad/s.
A spelunker is surveying a cave. He follows a passage that goes 181 m straight west, Use a scale drawing to determine the fourth displacement
A fireman 44 m away from a burning building directs a stream of water from a ground-level fire hose at an angle of 22° above the horizontal. If the speed of stream as it leaves the hose is 40m/s, at what height will stream of water strike the buil..
A Carnot engine has a power output of 200 kW. The engine operates between two reservoirs at 20°C and 450°C. How much energy is exhausted by heat per hour
A 140 ? lamp, a 25 ? electric heater, and a 57 ? fan are connected in parallel across a 137 V line. What is the current of the lamp
Estimate the number of drops of water in all the oceans on earth. You will need to use the facts that the oceans cover about 2/3 of the earth's surface and are about 4000 m deep on average
you take some data with nichrome wire and you have a plot of r vs. la-1 with the following equation from your computer
A block in the shape of a rectangular solid has a cross-sectional area of 4.48 cm2 across its width, a front-to-rear length of 22.1 cm, find the magnitude of the electric field in the block
A cyclist rounds a curve of 9 meter radius on a horizontal plane. If the coefficient of friction between the tires and the road is 0.8, compute the greatest speed at which he can ride
On a weekend archeological dig, you discover an old club-ax thatconsists of a symmetrical 9.2 kg stone attached to the end of auniform 2.6 kgstick. You measure the dimensions of the club-ax as shown in the figure:
a 3.3t magnetic field makes a 45 degree angle with a square loop 32cm on a side. whats the magnetic flux through the
The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 171 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
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