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A point moves in the plane xy according to the law x = = a sin cot, y = a (1 - cos wt), where a and co are positive constants. Find:
(a) the distance s traversed by the point during the time T;
(b) the angle between the point's velocity and acceleration vectors.
If the ball is free from rest at a height of 0.67 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? Suppose the ball is a solid sphere of radius 2.2 and mass 0.14.
A 110 volt hair dryer has 2 settings: 850 watts and 1250 watts. Determine the resistance of the dryer for both settings
if you move at 14m/s toward a 2300Hz source that is movingtoward you with a ground speed of 38m/s, what frequency do you hear
A system of 1620 particles, each of which is either an electron or a proton, has a net charge of 3.136 × 1017 C. Determine how many electrons are in this system
What is the final temperature reached by the addition of 11.4 grams of steam at 100°C to 681 grams of water at 25°C in an aluminum calorimeter having a mass of 781 grams.
An airplane traveling at half the speed of sound emits a sound of frequency 5.31 kHz. (a) At what frequency does a stationary listener hear the sound as the plane approaches? (b) At what frequency does a stationary listener hear the sound after the p..
food is refrigerated to slow down reactions that result in the food spoiling. a slightly bruised apple will rot four
You are shining ultraviolet light on a gas of an unknown element. You know that an electron starts in a ground state with an energy of -17.30 eV. What is the energy of the first photon emitted
A particle of mass m1 = 3.74kg is traveling in the positive x-direction with a velocity of 17.5m/s. What is the angle that the new trajectory makes with the x-axis
a astronomers on planet zog whose sun is 1.4 x 1011 m away measure their solar flux to be 1250 wm2. what is their suns
The tires of a car make 75revolutions as the car reduces its speed uniformly from 110 km/h to40 km/h. The tires have a diameter of 0.80 m. What was the angular acceleration of the tires
Roosevelt and others, subscribed to a new economic theory known as Keynesian economics. This theory suggested that while private sector growth was essential to maintaining a healthy economy, public sector spending was necessary to stimulate and st..
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