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the displacement of a standing wave on a string is given by D = 2.8sin(0.70x)cos(55 t), where x and D are in centimeters and t is in seconds. Give the speed of each of the component waves. Find the speed of a particle of the string at x = 2.50cm when t =1.9s.
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
what are the angles among the cable supporting the load and the beam and between the cable supporting the beam and the beam?
An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of 2.64×104N j^ over a time interval of 4.50s, What is the impulse of the force for this time interval of 4.50 s
She notices a group of workers down the walkway who have suddenly blocked her path, and she makes a quick stop in 1.8 seconds. What is Suzies average acceleration
A body of mass 200 g is acted upon by a force of 20 n. Find the acceleration of the body. If the body above is having a volume of 1000 cm3 estimate its density in kg/m2.
what would the period of the system be. When a particular mass-spring system is started by stretching the spring 5 cm, one complete oscillation takes 2 seconds.
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.16 kg. The ball approaches the cushion with a velocity of +1.6 m/s and rebounds with a velocity of ?1.2 m/s
A wheel rotates with a constant angular acceleration of 4.35 rad/s2. Suppose that the initial angular speed of the wheel is 2.99 rad/s. Elucidate through what angle does the wheel rotate after 2.88 s?
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat, how many conduction electrons pass through your chest
Explain how fast would it be moving after it had fallen a distance of 0.010 m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
If the electrons gain this energy by collision between hydrogen atoms in a high temperature gas, calculate the minimum temperature of the heated hydrogen gas
Find the maximum temperature in a Carnot cycle operating in a room-temperature (25?C) environment if its Carnot efficiency is 0.2
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