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A grinding wheel 0.22m in diameter rotates at 2600rpm .
A. Calculate its angular velocity in rad/s. Express your answer using three significant figures.
B. What is the linear speed of a point on the edge of the grinding wheel? Express your answer using three significant figures.
C. What is the acceleration of a point on the edge of the grinding wheel? Express your answer using three significant figures
A certain waffle iron is rated at 0.66 kW when connected to a 120-V source. What current does the waffle iron carry
A biologist is studying the growth of rats in an orbiting space station. To determine a rat's mass, she puts it in a 330g cage, attaches a spring scale, and pulls so that the scale reads 0.42N. what is the rat's mass
An air molecule is moving at a speed of 438m/s. How many meters would molecule move during 7ms (milliseconds) if it didn't collide with any other molecules.
An astronaunt has landed on a strange new planet and conducts an experiment to determine the acceleration of gravity. She uses a pendulum that has a period of oscillation of 2.84 s on the strange planet and 11.85 s on Earth. What is acceleration of g..
The centers of a 13.0 kglead ball and a 50.0 g lead ballare separated by 11.0 cm. What gravitational force does each exert on the other
A beam of light traveling in water strikes a surface of a transparent material at an angle of incidence of 45°. what is the index of refraction of the material
A electron enters a magnetic field of 0.3 T at an angle of 45 degrees and with a speed of 5 E5 m/s. Find the force on the electron . Describe the part of the electron while in the magnetic field.
Coal is combusted in a steam boiler. The specific coal contains 25 MJ/kg, If the boiler is 90% efficient, how much coal must be burned per hour to produce a stream thermal gain of 665 MJ/s. Roughly how much CO2 will be produced by this boiler?
Two children each of mass 20 kilogram ride on the perimeter of a small merry go round that is rotating at rate of 0.25 rev/s the merry go round is a solid disk of mass 30 kilogram and radius 3 meter. Find final rate of rotation
A particle with a mass of 2.00 x 10^-16 kg and a charge of 30.0 nC starts from rest, is accelerated with a strong electric field, and is fired from a small source inside a region of uniform constant magnetic field 0.600 T. The velocity of the particl..
A modem is designed to transmit at 100 kbps over a channel with 15 dB signal to nose ratio. Find the maximum symbols on the constellation of this modem.
A certain atom has an energy level 3.70eV above the ground state. When excited to this state, it remains 9.00%u03BCs , What is the wavelength of the photon
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