Which of the following numbers most closely represents the number of galaxies in the universe?

A) hundreds

B) thousands

C) millions

D) billions

If you could travel with speed of light (3.0e5 km/s) it would take only 2.5 minutes to reach venus. how far is venus from earth in km?

Why is magnetic force a non contact force?

A 1000.-kilogram car traveling 20.0 meters per second east experiences an impulse of 2000. newton • seconds west. What is the final velocity of the car after the impulse has been applied? (1) 18.0 m/s east (2) 19.5 m/s east (3) 20.5 m/s west (4) 22.

The equilibrium constant for the reaction of hydrogen gas and oxygen gas to produce water at 500 k is 2.4 * 1047. what does the magnitude of the equilibrium constant tell us about the reaction? 2 h2 (g) + o2 (g) ⇄ 2 h2o (g) k = 2.4 * 1047

Which of the gas giants has the largest diameter Physical science unit 5 lesson 4

Crickets chirpy and milada jump from the top of a vertical cliff. chirpy drops downward and reaches the ground in 2.70 s, while milada jumps horizontally with an initial speed of 95.0 cm>s.

Explain how gamma rays are produced by energy

A mechanical wave may be described as a disturbance that is transported through a medium via the mechanism of particle-to-particle interaction. Which of these is not classified as a mechanical wave? A) earthquake B) light C) sound D) water

How many paths do the electrons have to flowlin a series circuit?

A force of 6 lb is required to hold a spring stretched 4 in. beyond its natural length. How much work W is done in stretching it from its natural length to 8 in. beyond its natural length?