How far is the closest star to our solar system? how much time we would need to reach it with current tech industry state?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole