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Q1. A 97 kg man drops from rest on a diving board -2.8 m above the surface of water and comes to rest 0.68 s after reaching the water. The acceleration because of gravity is 9.81 m/s^2. What force does the water exert on the man? Reply in units of N.
Q2. The sound level measured in the room by a person watching a movie in a home theatre system varies from 63 dB throughout a quiet part to 92 dB throughout a loud part. In the order of how many times louder is the latter sound?
Calculate the gradient of V in each region
If the average frequency emitted by a 200,-, rm W light bulb is 5.00 times 10^ {14}, {rm Hz}, and 10.0 percent of the input power is emitted as visible light, about how many visible-light photons are emitted per second.
The valuable coefficient of kinetic friction
What is the horizontal component of the ball velocity
Two identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket.
Find out the effective coefficient of kinetic friction
What is height of the cliff
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
An oil drop whose mass is determined to be 3.3x10^-15 is held at rest between two large plates separated by 1cm while the potential difference between them is 340 V. How numerous excess electrons does this have here.
He would like a prescription for contact lenses to serve the same purpose. What is the exact contact lens prescription, in diopters.
What is angular velocity of the cockroach-disk system
Which vector has the largest x component and y component
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