If a star is 10 light-years away from us and it explodes today, when will we know that it exploded?

today

10 years from today

10 parsecs from today

What is an unstable nucleus emits

Why is it sensible on diagrams to represent a force by an arrow?

The red color of your jacket is due to?

True or false the potential energy of a freely falling object increases as it begins to fall

Select the answer choices that describe where plasmas can be found. (Select all that apply.) in stars in fireworks in lightning in lightbulbs

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

Jane and John Doppler effect

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure