According to the united states department of energy, what is the reliability rating of the u. s. electrical grid?

a. 99.3%

b. 99.5%

c. 99.7%

d. 99.9%

A bird can fly 25 km/h. How long does it take to fly 3.5 km?

If an atom had a nucleus 1 ft in diameter, what would be the diameter in miles?

Wo carbon atoms are joined by a spring-like carbon-carbon bond. the potential energy stored in the bond has the value you calculated in part a if the bond is stretched 0.050 nm. what is the bond's spring constant?

How does the nervous system allow you to run

When the same force id applied to a smaller area, the pressure is A. Lower B. greater C. Reduced D. The same

Block B has mass 4.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass 2.00 kg and sits at rest on top of block B. The coefficient of static friction between the two blocks is 0.400.

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?

Show that the Newton has the units of mass times acceleration.

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s