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Is it possible to have a positive position-time graph and a negative velocity-time graph? If so, under what conditions ? What does a curved position-time graph mean?
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. If the vehicle has a speed of 20.5 m/s at point , what is the force exerted by the track on the car at this point
Suppose the meter stick made an angle of 20 with the horizontal (the 0 mark above and the 100 cm mark below the horizontal ) when in equilibrium. Find the perpendicular distance between the axis of rotation and the lines of action of W & the 100 gm m..
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
it takes 4.0 j of work to move two charges from a large distance apart to 3.0 cm from one another. the charges have the
A 3.5 mL syringe has an inner diameter of 5.0 mm, a needle inner diameter of 0.24 mm, and a plunger pad diameter, The nurse empties the syringe in 2.3 s. What is the flow speed of the medicine through the needle
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.05 m/s on a smooth, slippery surface. What is the speed of the arrow after passing through the target
A coin is placed 10.1 cm from the axis of a rotating turntable of variable speed. What is the speed ( in rpm) of the turntable when the coin slides off
A parallel beam of light from a He-Ne laser, with a wavelength of 662nm, falls on two very narrow slits 0.050 mm apart. How far apart are the fringes in the center of the pattern if the screen is 2.5m away.
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.69 10-2 kg/s. What is the speed at which the gasoline moves through the fuel line
Suppose you are located 174 m from a radio transmitter. How many wavelengths are you from the transmitter
Compute the voltage drop along a 26 m length of copper wire which has diameter 1.665 mm and carries a 15 A current
A heat engine operates in a Carnot cycle between 80.0 C and 350 C. It absorbs 21000 J of energy per cycle from the hotreservoir. How much energy does if expel in each cycle by heat
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