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Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun, but a much smaller diameter. If you weigh 670 N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0 km?
The pressure exerted by a phonograph needle on a record is surprisingly large. what pressure is exerted on the record in N/m2
A 80.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
A 5 kg ball collides head-on with a 10 kg ball, which is initially stationary. The collision is inelastic. Which statement is true?
q1. a person eats a dessert that contains 260 calories one. the skin temperature of this individual is 36 degree
If you had two bars of iron – one magnetized and one un-magnetized – and no other material at hand, how could you determine which bar was the magnet. Explain.
A blacksmith heats a 1.9 kg iron horseshoe to 480 degree C, then plunges it into a bucket containing 10kg of water at 20 degree C. The specific heat of iron is 447 J/kgK. What is the final temperature.
A tank holds a layer of oil, of thickness To = 1.43 m, that floats on a layer of syrup of thickness Ts = 0.640 m, What is the index of refraction of the oil
The thickness of the bubble is 115nm and the bubble is illuminated by white light at normal incidencewhat colors(wavelengths) are transmitted throug the bubble
A certain satellite travels in an approximately circular orbit of radius 9.1 × 106 m with a period of 8 h 39 min. Calculate the mass of its planet from this information
Dorothy is up on her 16.0m by 15.0m roof enjoying the view of Kansas. Suddenly, a strong wind blows down her ladder, leaving her stranded. Calculate the force on the roof
In 1992, David Engwall of California used a slingshot to launch at 62 g dart. The dart traveled a distance of 477 m (almost 5 football fields). how far was the slingshot stretched
A 5.0-uF capacitor is charged so that the voltage drop across its plates is 5.0V. A 10.0-uFcapcitor is similarly charged so that the voltage drop across its plates is 10.0V. The two charged capacitors are then connected to each other in parallel w..
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