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Q. A machine part rotates at an angular speed of 0.48 rad/s; its speed is then increased to 2.8 rad/s at an angular acceleration of 0.61 rad/s2.
(a) Find the angle through which the part rotates before reaching this final speed.
(b) In general, if both the initial and final angular speed are doubled at the same angular acceleration, by what factor is the angular displacement changed?
A 1.0 kohm resistor is connected in series with a 10 mH inductor, a 30 V battery, and an open switch. at time t=0, the switch is suddenly closed. What are the voltage drops Vr and Vl 20.00 us after the switch is closed.
Two charged bodies exert a force of 0.790N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
Old naval ships fired 13 kg cannon balls from a 210 kg cannon. It was very important to stop the recoil of the cannon, since otherwise the heavy cannon would go careening across the deck of the ship.
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
The drill pipe has an outer diameter of 75 mm, a wall thickness of 6 mm, and a weight of 0.8 kN/m. If it is subjected to a torque and axial load as shown.
A grocery cart with mass of 12kg is being pusch at constant speed up a flt 15 degree ramp by force which act at an angle 17 degree below the horizontal line.
Janet jumps off a high diving platform with a horizontal velocity of 1.55 m/s and lands in the water 1s later. How high is the platform? The acceleration of gravity is 9.80 m/s2.
A 2.50 syringe has an inner diameter of 4 , a needle inner diameter of 0.24 , and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses syringe to inject medicine into a patient whose blood pressure is 140/100.
A 80 kg football player stand at the end of a uniform 8m, 50kg diving board supported as shown. Determine the forces exerted by the two supports.
A total of 34 bright and 34 dark Newton's rings (not counting the dark spot at the center) are observed as 550 -nm light falls normally on a planoconvex lens resting on a flat glass surface. How much broad is the center than the edges.
Charge of uniform density (80 nC/m^3) is distributed throughout a hollow cylinder region formed by two coaxial cylindrical surfaces of radii 1.0 mm and 3.0 mm. Determine the magnitude of the electric field at a point which is 2.0 mm from the symmetry..
Monochromatic light ( = 630 nm) strikes a pair of slits at normal incidence, forming a double-slit interference pattern on a screen located 1.20 m from the slits. It shows the interference pattern observed on the screen. What is the slit separatio..
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