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A block of wood is floating in water. The volume of the block is .01m^3. A force is pushing on the top of the block so that the top surface of the block is just at the level of the water. What is the magnitude of the force? The density of the wood is .5 * 10^3 kg/m^3 and the density of water is 1 * 10^3 kg/m^3.
A 450 gram ball of copper at 20.0 degree C is placed in a pot of boiling water until equilibrium is reached. How much thermal energy is absorbed by the ball
Two tugboats pull a disabled supertanker. Each tug exerts a construct force of 2.00 x 10^6 N, What is the total work done by the two tugboats on the supertanker
A parallel plate capacitor is made from circular plates of Aluminum foil each with a radius of 3 cm. The distance between the plates is 8 mm. Find the charge stored in this capacitor
A 9.5 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.67 T pointing up. During the course of 0.28 s , the field is changed to one of 0.31 T pointing down.
A student observing the ocean notes that n = 9 crests break in t = 3.4 minutes? Randomized Variables n = 9, t = 3.4 minutes , Input an expression for the frequency of the waves.
A person with mass 70.0 kilogram jumps out of a window from a fire in his building into the firefighters' net below. Find his change in momentum during the 0.40 second interval
a container is filled to a depth of 22.0 cm with water. on top of the water floats a 28.0-cm-thick layer of oil with
A 500-g mass hangs from a 45.0-cm-long string that is fixed at the top. The mass is pulled slightly aside and allowed to swing back and forth as a pendulum. What is the frequency (in Hz) of the pendulum
you put 1kg of water at 1 degree celsius together with 0.5kg of steam at 100 degrees celsius what will the final
A singly charged positive ion has a mass of 2.42 x 10-26 kg. After being accelerated through a potential difference of 240 V, Calculate the radius of the path of the ion in the field
A speed skater moving across frictionless ice at 8.1{\rm m}/{\rm s} hits a 6.0{\rm m} -wide patch of rough ice. What is her acceleration on the rough ice
What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension
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