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a swimmer wears a heavy belt to make her average densityexactly equal to the density of water. Her mass, including thebelt, is 60kg.
(a) what is the swimmer's weight in newtons?
(b) what is the swimmer's volume in m3?
(c) at a depth of 2m below the surface of apond, what buoyant force acts on the swimmer? what net force actson her?
A 17.5 kg cart is moving with a velocity of 7.65 m/s down a level hallway. A constant force of -10.0 N acts on the cart, How far did the cart move while the force acted
An electron is trapped in an infinite square-well potential of width 0.7 nm. If the electron is initially in the n = 4 state, what are the various photon energies
Engine oil (?=0.20Pa?s) passes through a 2.60mm diameter tube in a prototype engine. What pressure difference is needed to maintain a flow rate of 6.5mL/min
How much charge passes during the starter motor
A wave has a speed of 500.0 m/s and a wavelength of 4.9 m. What is the frequency of the wave? What is the period of the wave?
A small sphere with a mass of 3.00×10^?3g and carrying a charge of 5.20×10^?8C hangs from a thread near a very large, Find the angle of the thread
The new Hoover Dam Bridge connecting Arizona and Nevada opened in October 2010, What are these dimensions in meters
A 80cm long metal string under 34.5 N tension has a linear mass density 2.10x10^-4 kg/m. Find the frequencies of the first three harmonics
the siren of a fire engine that is driving northward at 30.0 m/s emits a frequency of 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s. what frequency does the truck driver hear
q1. to calculate the program suppose she runs up a flight of 85 steps each 0.150 m high in 69.0 s. for ease ignore an
In November 2004, the United States tested a scramjet that flew at 10.0times the speed of sound for 11.0s , as measured by engineers on earth. How long did the flight last as measured inside the jet
Find out the vertical component of the reaction force
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