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A wheel rotating about a fixed axis through its center has aconstant angular acceleration of 1.8 rad/s2. In acertain 5.0 s interval the wheel turns through an angle of 47.5rad. (a) What is the angular velocity of the wheel at the start of the 5.0 s interval? (b) Assumingthat the wheel started from rest, how long had it been in motion atthe start of the 5.0 s interval?
An electron enters a parallel plate capacitor with a speed of 5.45e+06 m/s. An electric field in the capacitor has deflected the electron downward by a distance of 0.618cm after traveling a horizontal distance of 2.25cm. Find the magnitude of the ele..
block of wood floats in fresh water with 0.651 of its volume V submerged and in oil with 0.890 V submerged. Find the density of the wood and the oil
Red light (n = 1.520)and violet light (n =1.538) traveling in air are incident on a slab of crown glass. What is the angle ofincidence of the violet light
q1. in a head-on collision a car stops in 0.27 from a speed of 12. the driver has a mass of 76 and is fortunately
What is the difference between an electric insulator and an electric conductor? Give examples of materials that are electric insulators
find the tangential and centripetal components of the net force exerted on a car (by the ground) when its speed is 38 m/s, and it has accelerated to this speed from rest in 9.5 s on a curve of radius 370 m. The car's mass is 1000 kg.
A girl delivering newspapers covers her route by traveling 9.00 blocks west, 4.00 blocks north, and then 2.00 blocks east, What is the total distance she travels
A highway curve with radius 1000{\rm ft} is to be banked so that a car traveling 48.0{\rm mph} will not skid sideways even in the absence of friction
A platinum resistance thermometer has resistances of 200.0 ? when placed in a 0?C ice bath and 253.8 ?, What is the melting point of potassium
Two stationary point charges of 4 nC and 2 nC are separated by a distance of 60 {rm cm}. An electron is released from rest at a point midway between the charges and moves along the line connecting them. What is the electric potential energy of the..
A healthy heart pumps about 70 ml of blood in one heart beat. The average pressure exerted is about 100 mm-Hg and there are 70 heartbeats in a minute. What is the average power output of the heart?
A planet orbits a star, in a year of length 2.49 x 107 s, in a nearly circular orbit of radius 2.39 x 1011 m. With respect to the star, evaluate the angular speed of the planet
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