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A rectangular box with open top floats on a surface of aswimming pool. During a rainstorm, box fills with waterpartially and floats 5 cm lower in the water. The box has sides oflength 10 cm and 20 cm, and 10 cm deep. Density of 250kg m^-3.
What mass of the water that has collected in the box?
The following day during a second rainstorm the box completelyfills with water. Does it float or sink? Why does it do this?
An electron beam contains electrons that move along the +x-axis at 0.020c. The beam enters a region of length 1.0 m and runs parallel to a wire that carries a 0.20-A current in the +x-direction.
A Styrofoam box has a surface area of 0.74 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 27°C. If it takes 8.5 h for 5.0 kg of ice to melt in the container, determine the thermal cond..
An object weighing325N in air is immersed in water after being tied to a string connected to a balance. The scale now reads265N. Find the density of the object
a small plastic ball with a mass of 6.15 x 10-3 kg and with a charge of 0.158 microc is suspended from an insulating
A magnetic field of magnitude 0.38 T is directed vertically upward, Find the magnetic flux through a flat surface of area 22 cm2 if the surface is horizontal
In the figure, suppose that the separation between speakers A and B is 5.90 m and the speakers are vibrating in phase. They are playing identical 110-Hz tones, and the speed of sound is 343 m/s.
An ideal gas has a density of 1.78kg/m^3 is contained in avolume of 44.8*10^-3 m^3. The temperature of the gas is 273K. What is the root mean velocity of the molecules
A man does 4,335 J of work in the process of pushing his 2.80 103 kg truck from rest to a speed of v, over a distance of 27.5 m. determine the horizontal force exerted on the truck
what is the diameter of the copper rod. Pull horizontally on a crate with a force of 140 N and it slides across the floor in a dynamic equilibrium. How much friction is acting on crate.
the inside of a room is to be maintained at 20 degrees celsius while the outside temperature is -10 degrees celsius.
A solid cone has a height of 50.0 cm and apex ( upper angle) of 30.0 degree. How far h above of the cone is the center of mass
A certain material is in a room at 27°C. If the absolutetemperature (K) of the material is tripled, its resistance doubles.(Water freezes at 273 K.) What is the value for a, the temperature coefficient of resistivity?
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