When the distance between two stars decreases by one-third, the force between them?

The famous leaning tower of pisa doesn't topple over because its center of gravity is

Which of the following is explained by general relativity? A. How massive stellar objects can form a lens. B. Why moving muons decay more slowly than stationary ones C. Why atomic clocks tick more slowly when in motion D.

How do you use the coefficient to calculate the number of atoms in each molecule?

A cetain car weighs 25,000 N. Calculate the mass of the car. 245.000 kg 25,000 kg 9.81 m/s2 2,500 kg

An aerobatic airplane pilot experiences weightlessness as she passes over the top of a loop-the-loop maneuver. The acceleration of gravity is 9.8 m/s 2 . If her speed is 320 m/s at this time, find the radius of the loop. Answer in units of km.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity

What are starburst galaxies and what do they have to do with galaxy evolution?