Physics, 02.07.2019 01:20, woodfordmaliky
Conversations with astronauts on the lunar surface were characterized by a kind of echo in which the earthbound person’s voice was so loud in the astronaut’s space helmet that it was picked up by the astronaut’s microphone and transmitted back to earth. it is reasonable to assume that the echo time equals the time necessary for the radio wave to travel from the earth to the moon and back (that is, neglecting any time delays in the electronic equipment). calculate the distance from earth to the moon given that the echo time was 2.56 s and that radio waves travel at the speed of light (3.00×108 m/s). give your answer in thousands of km.
Answers: 1
Physics, 22.06.2019 12:00, Sariyahhall1
Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation
Answers: 1
Physics, 22.06.2019 15:50, shaylawymannnnn
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Physics, 22.06.2019 20:30, adrianayepez8
Four identical lab carts each have a mass of 200 kg. different masses are added to the carts and the velocities are measured. all carts move to the right.
Answers: 3
Conversations with astronauts on the lunar surface were characterized by a kind of echo in which the...
Mathematics, 20.08.2020 18:01
Health, 20.08.2020 18:01
English, 20.08.2020 18:01
Mathematics, 20.08.2020 18:01