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The angular speed of an automobile engine isincreased at a constant rate from 1500rev/min to 2500 rev/min in13 s.
(a) What is its angular acceleration in revolutions perminute-squared?
rev/min2
(b) How many revolutions does the engine make during this13 s interval?
rev
A cannonball is shot (from ground level) with an initial horizontal velocity of 37.0 m/s, What is the speed of the cannonball 3.5 seconds after it was shot
The drawing shows one horizontal wire with the current going up and one vertical wire with the current going to the right. Point A is dH to the right and dV above the intersection. Point B is dH to the left and dV below the intersection.
Kelli weighs 417 N, and she is sitting on a playground swing that hangs 0.44 m above the ground. Her mom pulls the swing back and releases it when the seat is 1.00 m above the ground. Imagine that air resistance is negligible.
(a) Three point charges, A = 2.2 µC, B = 7.5 µC, and C = -3.9 µC, are located at the corners of an equilateral triangle. Find the magnitude and direction of the electric field at the position of the 2.2 µC charge.
An isolated conductor of arbitrary shape has a net charge of +1.20×10-5 C. Inside the conductor is a cavity within which is a point charge q = +3.60×10-6 C. What is the charge on the cavity wall?
q1. after being accelerated to a speed of 1.43times105 the particle enters a uniform magnetic field of strength 1.00
A movie camera with a (single) lens of focal length 95 mm takes a picture of a person standing 28 m away. what is the height of the image in millimeters on the film
Using the electric field described in the alpha-cannon simulation, suppose that an alpha particle is fired upward and forward from a height y = 0 m at a speed v = 28.0 m/s.
At the instant the car begins to accelerate, a truck with a constant velocity of 21 m/s passes in the next lane. Explain how far will the car travel before it overtakes the truck?
Radio station WQED in Pittsburgh broadcasts at 89.3 MHz with a radiated power of 43.0 kW. What is the magnitude of the momentum of each photon?
A 2.00 g plastic bead charged to -4.00 nC and a 4.00 g glass bead charged to +8.00 nC are 2.00 cm apart, find the initial accelerations of the plastic bead
Now the gymnast (not holding any additional mass) walks directly above the right support. What is the force the left support exerts on the beam
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