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A cube of side 15 cm floats at the surface between waterand oil. The oil has a density of 810 kg/m3. If the cube floats sothat it is 52% in water and 48 % in the oil, what is the mass ofthe cube and what is the buoyant force on the cube.
A future space station in orbit about the earth is being powered by an electromagnetic beam from the earth. What are the rms values of the electric and magnetic fields
This isotope can also decay by ?-emission. What is the energy release in this case? What is the maximum kinetic energy of the emitted ?-particle
A transformer consisting of two coils wrapped around an iron coreis connected to a generator and a resistor, as shown in the drawing. There are 11 turnsin the primary coil and 22 turns in the secondary coil. The peakvoltage across the resistor is ..
To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. What was the raven's speed right after the collision
A grinding wheel of radius 0.35 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75N · m. Find the magnitude of the friction force.
Three forces are applied to a wheel of radius 0.290 m, as shown in the figure below. One force (F1 = 12.0 N) is perpendicular to the rim, one (F2 = 9.05 N) is tangent to it, and the other one (F3 = 13.3 N) makes a 40.0° angle with the radius. What..
A fishing line has attached to it a hollow plastic float 2.15 cm in diameter and having a mass of 1.90 g. Find the mass of a lead weight
A cylindrical capacitor consists of a cylinder (of length L and radius a) with a total charge Q nested inside a thin conducting cylindrical shell (of length L and radius b) with total charge -Q
A 94-kg fullback is running at 3.7m/s to the east and is stopped in 0.85 s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
A driver traveling at 72 km/hr sees an animal dash out onto the road and slams on the brakes. What was the driver's reaction time
A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. What was the mass of the ice cube
If there had been no explosion, the shell would have landed a distance from the mortar. Suppose that air resistance and the mass of the shell's explosive charge are negligible. Determine the distance from the mortar at which the larger piece of th..
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