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A crate is pushed across a level floor by a constant forcein the direction of motion. The force does 5 J of work on the crate. The kinetic energy of the crate increased by 3 J while the force was being applied.
i. How much work did gravity do on the crate while theforce was being applied?ii. How much work did friction do on the crate whilethe force was being applied?
An ant’s position is described as follows: r = (2t^3 - 6t^2) *i + (-3t^4 + 2t) *j a. What are the x- and y-components of the position at t = 0s? b. What are the x-and y-components of the velocity at t = 1s? c. What is the magnitude of the velocity at..
A sinusoidal current i= Icoswt has an rms value of I rms = 2.20 A. What is the current amplitude, What is the rectified average current
Capacitors C1 = 6.03 ?F and C2 = 2.45 ?F are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C1 and C2
Question on center of gravity Discover speed of each block
A sound wave from a police siren has an intensity of 116.9 W/m2 at a certain point; What is the intensity level of the sound wave due to the ambulance
Coefficient of linear expansion for aluminium
The 65.0 kg climber in the figure is supported in the "chimney" by the friction forces exerted on his shoes and back. What is the minimum normal force he must exert
A wedding ring (of diameter 1.7 cm) is tossed into the air and given a spin, resulting in an angular velocity of 12 rotations per second. The rotation axis is a diameter of the ring. Taking the magnitude of the Earth's magnetic field to be 4.3 10-5 T..
q1. a golf ball is struck with a five iron on level ground. it lands 95.3 m away 4.50 s later. what were a direction
A liquid (? = 1.65 g/cm3) flows through two horizontal sections of tubing joined end to end. In the first section, the cross-sectional area is 10.0 cm2, Calculate the smaller section's pressure
During a fun run a girl runs for 12 s moving 2.7 m/s. She then accelerates at 0.5 m/s^2 over the next 25 m. What distance did she cover during the entire period
A tungsten wire has a radius of 0.086 mm and is heated from 20.0 to 1422 oC. The temperature coefficient of resistivity is ? = 4.5, How long is the wire
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