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Suppose the scale of a crown read 7.84 N in air and 6.84 N in water. Gold density = 19.3 g/cm3
(a) Find the Buoyant force.
(b) Find volume of this crown.
(c) Find the density of this crown.
(d) If this crown is pure gold and not hollow. What would the volume reading be?
(e) Determine the Buoyant force in this case.
(f) What would the scale reading be in water?
A closed box is filled with dry ice at a temperature of -94.2 oC, while the outside temperature is 21.0 oC. Find the thermal conductivity of the material from which the box is made
Furthermore, describe any differences in kinetic energy and gravitation potential energy among these balls while they hit the ground.
A spring is mounted at angle of 35 degrees on a frictionless incline. The spring is compressed by 15 cm where it is allowed to propel a mass of 5.5 kg up the incline. a. if the spring constant is 550 N/m, how fast is the mass moving when it leaves th..
The truncated form of the virial equation is P(VB) = RT , where B is a constant that depends only on temperature. Derive the expression for reversible isothermal work for a gas that obeys this equation of state.
A bomb at rest explodes, breaking into three pieces. Two of the pieces have equal mass and fly off at 60° to one another with the speed of 100 m/s. What are the magnitude and the direction of the third piece
A large, cylindrical tank contains kerosene (S.G. = 0.85) in storage later to be transported by rail. The tank has a diameter of 19 meters and is 11 meters tall and has a 28 cm in diameter hole at its base.
A child is riding a merry-go-round which completes a revolution every 8.36 s. The child is standing 4.65 m from the center of the merry-go-round. Evalute the magnitude of the centripetal acceleration of the child?
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
Estimate the electric field needed to pull an electron out of an atom in a time comparable to that for the electron to go around the nucleus.
A 1360 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.97 × 105 km from the planet's center. What is the force acting on this satellite
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor, How much charge can the cloud hold before the dielectric strength of the air is exceeded
Assume that a binary star system consists of two stars of equal mass. They are observed to be separated by 310 million kilometres and take 4.0 Earth years to orbit about the point midway between them.
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