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Q. The length of a simple pendulum is 0.73m, the pendulum bob has a mass of 307 grams, and it is released at an angle of 12° to the vertical. With what frequency does it vibrate? Assume SHM. What is the pendulum bob's speed while it passes through the lowest point of the swing?
What is the total energy stored in this oscillation, assume no losses?
A 120 g trick baseball is thrown at 51 km/h. It explodes in flight into two pieces, with a 50 g piece regular straight ahead at 86 km/h. How much energy do the pieces gain in the explosion.
A charge of -3.0 nC is at the origin and a second charge of 13.0 nC is at x = 8.00 m. Find the magnitude and direction of the electric field halfway in between the two charges.
Find out the maximum height reached by the rocket.
What is magnitude of the force that a concrete support exerts on the bridge at each end. The cloth exerts a friction force of 0.100 N on the mug and the cloth is pulled with a constant acceleration of 3.00 m/s.
An underwater diver sees the sun 58{rm ^circ} above horizontal. How high is the sun above the horizon to a fisherman in the boat above the diver.
An intergalactic rock star bangs his drum every 1.52 s. A person on earth measures that time between beats is 2.10 s. How fast is the rock star moving relative to the earth.
What is an average speed
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.
Computing the kinetic energy, takeoff speed, and kinetic energy per kilogram.
The convex lens of a copy machine has a focal length of 25 cm. A letter to be copied is placed 40.0 cm from the lens.
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
The front 1.20 m of a 1600 kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision.
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