Ared supergiant is observed in a globular cluster in another galaxy (located 150,000 light years away). it is predicted, based on its mass and age of the star that it will become supernova in about 10,000 years. when will this supernova be visible on earth? a) 10,000 years from now. b) 10,000 years ago. c) 150,000 years ago. d) 150,000 years from now. e) 160,000 years from now.
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Physics, 22.06.2019 05:00
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
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Physics, 22.06.2019 17:30
Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.
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Physics, 22.06.2019 18:30
Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions
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Physics, 23.06.2019 00:50
Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart? 865 kg 320 kg 12.1 kg 3.12 kg
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Ared supergiant is observed in a globular cluster in another galaxy (located 150,000 light years awa...
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