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The circular blad on a radial arm saw is turning at262 rad/s at the instant the motor is turned off. In 18 sec.the speed of the blade is reduced to 85 rad/s. Assume theblade to be a uniform solid disk of radius 0.130m and mass0.400kg. FIND THE NET TORQUE APPLIED TO THE BLADE.
Two large metal plates of area 1.20m2 face each other. They are 4.8cm apart and have equal but opposite charges on their inner surfaces. The strength of the electric field between them is 63N/C.what is the magnitude of the charge on each plate.
A uniform meter stick is at rotational equilibrium when a mass 200 g is suspended at the 5 cm mark, a mass of 150 g is suspended at the 80 cm mark and the support is placed at the 40 cm mark. What is the mass of the meter ?
What must the charge (sign and magnitude) of a 1.43 g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 630.
A 30-Kg coconut falls from a coconut tree a distance of 30 meters. how far into the sand does the coconut sink
Describe how a light water commercial nuclear reactor works. Include a diagram and talk about the role of each of the following factors; fuel, moderator, control rods, coolant, reactor vessel, shielding.
A 2.11-cm2 wafer of pure silicon is irradiated with electromagnetic radiation having a wavelength of 775 nm. How many electron-hole pairs are produced in one second
A Galilean design telescope is to be made with an objective of focal length 450 mm with an angular magnification of 18. What should the focal length of the eyepiece be
The air around a spinning 142g baseball (below) of radius 3.55cm experiences a faster speed on the left than the right side, determine the pressure difference between the right and left sides of the ball
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 7.3, what is the ratio of their kinetic energies
Determine the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the system's kinetic energy due to the collision?.
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
Two 0.20-H inductors and one 0.44-H inductor are connected in series across the terminals of a 60.0-Hz ac generator. What is the total inductive reactance of this circuit
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