Physics, 31.01.2020 03:57 Barbiealice8362
Which kind of electromagnetic waves has a wavelengths greater than 10 cm?
Answers: 3
Physics, 21.06.2019 18:00
Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past
Answers: 1
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
Answers: 1
Physics, 22.06.2019 14:10
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
Physics, 22.06.2019 14:10
Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?
Answers: 1
Which kind of electromagnetic waves has a wavelengths greater than 10 cm?...
History, 13.07.2019 11:10
Physics, 13.07.2019 11:10
Biology, 13.07.2019 11:10
Chemistry, 13.07.2019 11:10
Computers and Technology, 13.07.2019 11:10
History, 13.07.2019 11:10
Social Studies, 13.07.2019 11:10
History, 13.07.2019 11:10
English, 13.07.2019 11:10
Geography, 13.07.2019 11:10
Social Studies, 13.07.2019 11:10
Chemistry, 13.07.2019 11:10
Chemistry, 13.07.2019 11:10
Computers and Technology, 13.07.2019 11:10