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A 5.22-kg object is attached to the bottom of a vertical spring and set vibrating. the maximum speed of the object is 15.3cm/s and the period is 645ms. find (a) the forse constant of the spring, (b) the amplitude of the motion, and (c) the frequency of ocillation.
The sound level in the middle of a rave is 90.0 dB. What is the sound intensity at this location
If a camera with a 60 mm lens is to resolve two objects that are 3.0 mm from each other and both objects are 4.0 m from the camera lens, what is the minimum diameter of the camera lens
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach 97 dB, measured a distance of 6.0 m from the source.
What is the total force on the bottom of a swimming pool 13.0m by 6.9m whose uniform depth is 2.1m ? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
Consider an infant who weighs 100 newtons. During each year she grows so that each dimension of her body increases by 5%. How much would she weigh then.
A 75.0 kg stunt man jumps from a balcony and falls 26.5 m before colliding with a pile of mattresses. what is the average force exerted by the mattresses on the stuntman
A garden hose has an internal diameter of 1.5 cm. It's connected to a sprinkler that consists merely of an enclosure with 14 holes, At what speed does it leave the sprinkler
a 27.2 g arrow is fired with a velocity of 87.3 m/s from a bow with a mass of 2.45 kg. Find the impulse on the arrow
Forces in a Three-Charge System Coulomb's law for the magnitude of the force between two particles with charges and separated by a distance is , where , and is the permittivity of free space.
An Olympic long jumper leaves the ground at an angle of 19.8 ° and travels through the air for a horizontal distance of 8.17 m before landing. What is the takeoff speed of the jumper
Ball 1, with a mass of 120g and traveling at 15m/s , collides head on with ball 2, which has a mass of 330g and is initially at rest. What are the final velocities of each ball if the collision is perfectly inelastic? (Vfx)1? (Vfx)2
A solid disk is rotating clockwise with an angular velocity of ? = 3 rad/s. Find the moment of inertia of the disk
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