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A ball has a density of 900 kg/m3 and it's volume is0.03m3. To submerge in water the ball must be held downby the force. What is the force required to keep the ball submerged?
a ships anchor chain is wrapped around a hollow steel drum of mass m 500 kg and radius r 0.5m. the drum is located on
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
A garden has a circular path of radius 50{\rm m} . John starts at the easternmost point on this path, What is the magnitude of John's displacement
A 8.10-kg hanging object is connected by a light, inextensible cord over a light, find the tension in the string
A block of mass M=0.20 kg is attached to a spring with force constant k=12.0 N/cm. Calculate the period the resulting oscillations and the total energy of the system assuming no damping
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 350 K is heated at constant volume to 700 K, What is the efficiency of the cycle
how do you know if the far point is the object distance (So) or the image distance (Si) in a problem, Calculate the focal length of Sam's glasses
A charge of +1 coulombs is placed at the 0 cm mark of a meter stick. A charge of +4 coulombs is placed at the 100 cm mark of the similar meter stick.
Two identical particles, both of mass m and charge q, What is the speed of each particle when they are a distance 2d apart
In an experiment, light of wavelength 600 nm falls on two slits which are spaced at a distance of .5 mm. What is the distance of the slit to the screen
Suppose a news report stated that starship Enterprise had just returned from a 5 year voyage while traveling at 0.81c. how much time elapsed on the ship
a 760 kg light weight helicopter ascends from the ground with an acceleration of 2.5m/s^2. what is the work done by the lifting force
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