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Q1. A hiker's trip consists of three segments. Path A is 8km long heading 65 degrees north of east. Path B is 7km long in a direction due east. Path C is 4.0 km long heading 313 degrees counter clockwise from east.
a. graphically add hiker's displacements in the order A,B,C
b. graphically add hiker's displacements in the order C,B,A
c. What can you conclude about the resulting displacements?
Q2. Assume that the tower height is h = 10.80 m, and that the bulls-eye's horizontal distance is d = 3.8 m from the launch point. If the pumpkin is thrown horizontally, what is the launch speed necessary to hit bulls-eye?
Find out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth.
A certain car is capable of accelerating at a rate of 0.52 m/s2. How long does it take for this car to go from a speed of 27 mi/h to the speed of 33mi/h.
A flight attendant pulls her 70.0N flight bag a distance of 244 m along a level airport floor at a constant speed. The force she exerts is 36N at an angle of 52° above the horizontal. Find the work she does on the flight bag.
What is torque exerted by the fish about an axis
Some skin divers go as deep as 50 m. What is the gage pressure at this depth in fresh water, and what is the ratio of absolute pressure at this depth to normal atmospheric pressure.
A 203 rad dose of radiation is administered to a patient in an effort to combat a cancerous growth. Suppose that all of the energy deposited is absorbed by the growth.
A 3.60 long, 420 steel beams extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 72.0 construction worker stands at the far end of the beam. What is the magnitude of torque about the..
Sisyphus was a character in Greek mythology that was doomed in Hades to push a boulder to the top of a steep mountain. When he reached the top, the boulder would slide back down the mountain and he would have to start all over again.
A very large number (N+1) polaroids are arranged in a sandwich.
Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire.
A heavy rope used for as a mooring line for a cruise ship sags a shown. If the mass of the rope is 96 kg, what are the tensions in rope at A and B.
The maximum distance from Earth to the Sun (at our aphelion) is 1.521 x 10^11 m and the distance of closest approach (at perihelion) is 1.471 x 10 ^11 m. Assume the Earth's orbital speed at perihelion is 3.027 x 10 ^ 4 m/s. (overlook the effect of th..
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