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Given that the Moon period about the Earth is 27.32 days andthe distance from the Earth to the Moon is 3.84 x 10^8 m, estimate the mass of the Earth. Assume the orbit is circular. why do yousuppose yur estimate is high.
A 5 kg point mass and a 4 kg point mass are attached to the end of a rod that has a mass 1 kg and a length of 1 meter. the system is rotating with an angular speed of 50 rpm about a vertical axis passing through the center of the rod.
A real heat engine working between heat reservoirs at 987 K and 659 K produces 540 J of work per cycle for a heat input of 2400 J.
Water flows through two garden hoses. The large diameter hose is connected to the end of the small diameter hose. How are the pressures in the two hoses related
The magnetic flux through a loop of wire is ?B = 5.7 T · m2. what is the smallest possible value for the area of the loop
A technician wraps wire around a tube of length 40 cm having a diameter of 7.8 cm. Find the self-inductance of this solenoid
Copper wire (resistivity 1.7x10-8 italic capital omega space straight m , circular cross section with radius 2.34 mm) is used to form 2 thousand circular loops of wire in a solenoid
A car with a total mass of 1.52 103 kg has wheels of radius 33.5 cm and moment of inertia 0.835 kg · m2. Find the car's translational kinetic energy when the car is moving at a speed of 27.5 m/s
A fire hose held near the ground shoots water at a speed of 6.2 m/s.At what angle(s) should the nozzle point in order that the water would land 2.5 m away.
An upright object is placed a distance in front of a converging lens equal to twice the focal length (f1) of the lens. On the other side of the lens is a converging mirror of focal length f2 separated from the lens by a distance 2(f1+f2).
When the temperature of a coin is raised by 85.4 C°, the coin's diameter increases by 3.08 x 10-5 m. find the coefficient of linear expansion
At one instant, a system has 30J of kinetic energy and 30J of potential energy. How much work was done by conservative forces
You are running toward an approaching marching band. You are moving at 9.3 m/s and the band is moving at 2.7 m/s
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