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A web page designer creates an animation in which a dot on a computer screen has a position R=[4.0cm + (2.4cm/s^2)t^2(i)] + (5.5cm/s)t(j)
a) Find the average velocity of the dot between t=0 and t=2.
b) Find the instantaneous velocity at t=0 s.
c) Find the instantaneous velocity at t=1.0 s.
d) Find the instantaneous velocity at t=2.0 s.
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
Write down the expression for net torque
One of the 57.5cm -long strings of an ordinary guitar is tuned to produce the note B3(frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
Over the next several weeks, Frank never saw any of the industry's logo items being worn or used by the workers. Instead the workers were uncommunicative towards him and at times even hostile
A converging lens of focal length 0.25 m forms a virtual image of an object, What is the distance between the object and the lens
Unpolarized light passes through five successive Polaroid sheets, What is the intensity of the transmitted beam
A swimming pool has dimensions 36.0 m 8.0 m and a flat bottom. When the pool is filled to a depth of 1.90 m with fresh water, what is the force caused by the water on the bottom
Cesium is a monovalent metal having a density of 1.870 g/cm3 and a molar mass of 132.9 g/mol. Use this information to calculate the density of charge carriers
determine that the auto was traveling at a speed of approximately 30 m/s upon impact with the groung. Explain how fast must the car have been moving before leaving the road?
The track is 400 meters lonf and linear. Car A accelerates at 3 meters per second and Car B accelerates at 3.1 meters per second. How far behind is Car A when Car B passes the finish line
Two long wires carrying equal currents I are at right angles to each other, but don't quite touch. Describe the magnetic force one exerts on the other
a 1.5-kg object is attached to an ideal massless spring with a spring constant of 20 nN/M OSCILLATES on horizontal, Find the frequency of the oscillations
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