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Question: Mr. Gomez decreased the speed of his car by 30 miles per hour over a period of 10 seconds. Find the average change in speed each second.
A hospital's linear accelerator produces electron beams for cancer treatment. The accelerator is 1.4m long and the electrons reach a speed of 0.98c.
If the 1 Kg standard body has an aceleration of 2.00 m/s^2 at 20 degrees to the positive direction of an x axis, what is the net force in unit-vector notation
Water flowing out of a horizontal pipe emerges through a nozzle is 0.48 cm. The speed of the water in the pipe is 0.62 m/s. Treat the water as an ideal fluid, and determine the absolute pressure of the water in the pipe.
A neutron star has a mass of 2.0*10^30 kg (about the mass of our sun) and a radius of 5.2*10^3 m (about the height of a good-sized mountain). assume an object falls from rest near the surface of such a sta
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.19 106 m/s. Find the centripetal acceleration of the electron
The pulley system in Figure below is used to lift a 52-kg crate. Note that a chain connects the upper pulley to the ceiling, determine the tension in each chain
a solid ball has a rotational inertia of 0.0314 kgm2. it is rotated by applying a 4.7 N force tangentiallyto it. the radius is 14 cm. what is the angular acceleration of the ball
If I short out a D cell and draw a current of 0.5 A for a minute, how many coulombs of charge move through the circuit
You have to move your 900N couch before a delivery company drops off your new one. How much does your roommate weigh
question consider the function y cosx-30. at what degree on the x axis in the first period 0 - 360 degrees will the
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter and carries a current of 55 A. If the bird's feet are 3.9 cm apart, calculate the potential difference between its feet. (Th..
Calculate the blackbody temperatures (K) from the peak wavelengths given in a) through b), and the peakwavelengths (m) from the temperature given inc)
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