The first hint that the universe might be expanding came from Vesto Slipher's work with the spectra of spiral nebulae in 1912
Indicate whether the statement is true or false
TRUE
You might also like to view...
Rotational Kinetic Energy: A solid uniform sphere is rolling without slipping along a horizontal surface with a speed of 5.5 m/s when it starts up a ramp that makes an angle of 25° with the horizontal. What is the speed of the sphere after it has rolled 3.0 m up as measured along the surface of the ramp?
A. 4.0 m/s B. 8.0 m/s C. 1.9 m/s D. 2.2 m/s E. 3.5 m/s
Whether a truck comes to a stop by crashing into a haystack or a brick wall, the impulse is
A) greater with the haystack. B) greater with the brick wall. C) both the same
When a light beam emerges from water into air, the average light speed
A) increases. B) decreases. C) remains the same.
Which kind of interstellar spacecraft collects its fuel during its passage?
A) interstellar ark B) matter-antimatter rocket C) solar sail D) interstellar ramjet