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

Does air resistance affect the motion of a falling object differently when the mass is greater?

Collisions between galaxies: a. can turn elliptical galaxies into spirals. b. are the best explanation for gamma-ray burst events. c. cause large numbers of stars to collide and explode. d.

Which is a result of using a machine? O The mechanical advantage makes the work output O The machine can put out force without having any O A large force can be exerted through a long distanc O A large force can be exerted through a short distan

The number of electorn is morn than proton in nuclie. why?

You would the largest mass of gold if your chunk of gold weighed 1n on

The planet XYZ traveling about the star ABC in a circular orbit takes 24 hours to make an orbit. Assume that the orbit is a circle with radius 89 comma 000 comma 00089,000,000 mi. Find the linear speed of XYZ in miles per hour.

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

What is the formula for calculating the mass when i have the number of volume and density

What is the name for potential difference that causes current to flow? (A) electric charge (B) static discharge (C) voltage

How is a herpetologist and a ecologist similar