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A person is lying on a diving board 3.00 m above the surface of the water in a swimming pool. The person looks at a penny that is on the bottom of the pool directly below her. The penny appears to the person to be a distance of 8.00 m from her. What is the depth of the water at this point?
A bowling ball has a mass of 3.3 kg, a moment of inertia of 0.076032 kg · m2, and a radius of 0.24 m. What is the total kinetic energy of the rolling ball
Two astronauts, each having a mass of 88.0 kg, are connected by a 10.0 m rope of negligible mass. What is the new rotational energy of the system
If an astronaut can throw a certain wrench 14 {rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the similar starting speed in both places.
The ferromagnet gadolinium has a Curie temperature of 298 K and each atom has J=7/2 and g=2. Find the value of the molecular field at low temperatures
Kim has a metal casting company which makes commemorative coins. She has 0.12 cubic meters of silver which she needs to make into 1.07E5 coins of thickness 2 mm. If she uses all of the silver, what is the diameter in centimeters of each coin.
Discuss the postulates and implications of Albert Einstein's Special Theory of Relativity on the way that scientific data is collected and analyzed
A satellite with mass 2200kg is initially in a circular orbit a distance 325km above the earth's surface. Due to air drag, the satellite's altitude decreases to 250km. Calculate the change in gravitational potential energy
A sample of ethyl alcohol (C2H5OH) has a density of 806 kg/m3 and a volume of 1.73 x 10-3 m3. find the number of molecules in the sample
here is a potential difference of 5.0 V between the ends of a 60 cm long graphite rod that has a cross-sectional area of 1.0 mm2. Find the resistance of the rod
A spacecraft is in orbit around a planet. The radius of the orbit is 3.2 times the radius of the planet, What is the period of the spacecraft's orbit
A laser used to repair a detached retina has wavelength of 532nm. How many photons are in each pulse
A superhero flies 287 meters from the top of a tall building at an angle of 17 degrees below the horizontal. What is the vertical component of the superhero's displacement? Answer in units of meters. The horizontal is 274.459 meters and the vertical ..
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