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A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine? (1 hp= 746 W)
The blades of a fan running at low speed turn at 260rpm . When the fan is switched to high speed, the rotation rate increases uniformly to 360rpm in 5.65s.
question a converging lens f 14.7 cm is located 24.1 cm to the left of a diverging lens f -6.64 cm. a postage stamp
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
you have a string with a mass of 14.1 g. you stretch the string with a force of 8.49 n giving it a length of 1.97 m.
A stream of protons and electrons are shot horizontally (from the left edge of the page to the right) with a speed of 1.2 x 10^6 m/s, What is the radius of the curvature and the direction for the curvature that each of these particles undergoes
Discuss displacement versus distance moved for an object and illustrate with examples. Define Inertia and explain its consequences on motion
A copper wire, whose cross-sectional area is 5.22 x 10-6 m2, has a linear density of 5.86 x 10-3 kg/m and is strung between two walls. At the ambient temperature, a transverse wave travels with a speed of 43.1 m/s on this wire. The coefficient of ..
Two parallel plates are held at potentials of +229V and ?59V, An electron is initially placed halfway between the plates, Find its kinetic energy when it hits the positive plate
q1. a charge of 5.62 muc is at the origin and a second charge of -2.44 muc is on the positive x-axis 1.00 m from the
Two balls with a net charge of - 4.0 C and + 10.0 C are separated by 2 cm. A) What is the electrostatic force on the positive charge? B) What is the electrostatic force on the negative charge?
a he ion is placed in an excited state so that its remaining electron occupies the n5 state. the electron can make a
An amusement park ride called the Rotor consists of a room in the shape of a vertical cylinder (1.98 m inradius) which, once the riders are inside, begins to rotate,forcing them to the wall. When the room reaches a speed of onerotation every 1.56 ..
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