If a star is 50 light-years away from earth, how long will it take light to travel from star to earth?

A child does 0.20 joule of work to compress the spring in a pop-up toy. if the mass of the toy is 0.010 kilogram, what is the maximum vertical height that the toy can reach after the spring is released?

Describe how velocity changes with time

If Earth's mass increased the gravitational force between Earth and the Moon

If the strings have the same thickness butdifferent lengths, which of the following parameters, if any, willbe different in the two strings? Check all that apply. wave frequencywave speedwavelengthnone of the above

Amy has a mass of 30 kg, and she is riding a scateboard traveling 5 m/s. what is her momentum?

Which statement best describes the long-term effects of using non-renewable resources? A. Burning fossil fuels pollutes the environment. B. Fossil fuels burn clean, reducing air pollution. C.

If a man moves a large box that weighs 10 newtons 20 meters in 30 seconds, how much power was used.

Imagine you are digging a hole to the center of the earth. In which order would dig through them? A. inner core, outer core, upper mantle, lower mantle, crust B. crust, upper mantle, lower mantle, outer core, inner core C.

Why is objectivity important in science

Which scientist's work led to our understanding of how planets move around the Sun?