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A bicyclist rides 4.9 km due east, while the resistive force from the air has a magnitude of 3.4 N and points due west. The rider then turns around and rides 4.9 km due west, back to her starting point. The resistive force from the air on the return trip has a magnitude of 4.0 N and points due east.
(a) Find the work done by the resistive force during the round trip.
A bag of intravenous (iv) infusion is help up at 80 cm above the level of patient's veion, What is the downward force of the saline solution on the clot at the tip of the catheter
On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
A jetliner is moving at a speed of 274 m/s. The vertical component of the plane's velocity is 54.0 m/s. Conclude the magnitude of the horizontal component of plane's velocity.
How many electrons should be transferred from the plate. When you enter your answer, leave off the unit rm dB.
What was the bullet's speed as it left the barrel. A 1kg block rests against one end of a horizontal spring which is compressed by 10 $cm$.
An aircraft with a mass of 996 kg accelerates from 0 to 87 m/s in 6.2 seconds, at which time the aircraft launches. What is the kinetic energy of the aircraft when the aircraft launches
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm.
A spelunker is surveying a cave. She follows a passage that takes her a distance 189 straight west, then a distance 220 in a direction 45 east of south, after that a distance 280 at 30 east of north. After a fourth unmeasured displacement she find..
A 4.00-kg mass is connected by a light cord to a 3.0 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of 0.50 kg · m2.
At what temperature would the rms speeds be equal to the escape speed from planet earth.
For this experiment you will require a stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
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