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A block of iron quickly sinks in water, but ships constructed of iron float. A solid cube of iron 1 meter on each side is made into sheets. To make these sheets into a hollow cube that will not sink find what should be the minimum length of the sides of the sheets?
A spring with a spring constant of 1.9×102N/m is attached to a1.6 kg mass and then set in motion. What is the frequency of the vibration? What is the period of the mass-spring system?
A diver proposed using a plastic bag full of air, immersed in water, as an underwater lens. what shape should the air pocket have
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 8.48 x10^7 km. Radio waves travel at the speed of light (3.00 x10^8 m/s). How many seconds does it take for the signal to reach the Earth.
An electron is accelerated through 2.85 103 V from rest and then enters a uniform 2.40-T magnetic field. What is the maximum magnitude of the magnetic force this particle can experience
Ignore the force of gravity.
Velocity is given by distance traveled per unit time. In the case of waves show that this leads to the velocity of the wave being equal to the product of the wavelength and the frequency.
An intergalactic rock star bangs his drum every 1.10 s. A person on earth measures that the time between beats is 2.10 s
A superconductor in a magnetic field obeys the relationship B(T) = B(0) [1 – (T/Tc)2]. If the superconductor has a Tc of 20K and it is operated at T = 4.2K the critical field is 30T. Determine the maximum operating temperature if the material is used..
A student is ice fishing in Colorado on a frozen lake over spring break. Find the mass of ice cut out to make the hole
there are 2 flat metal plates each of length l and width w. you place a tiny spacer of height 0.700h0 at one end of the
a prism is made of glass of unknown ri. a parallel beam of light is incident on a face of the prism. the angle of min
You are working for a shipping company. Your coworker is supposed to grab the packages as they arrive at the top of the ramp. But she misses one and it slides back down. What is its speed when it returns to you
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