The gas used to fill party ballons contain only helium atoms. This make helium a (n).

White light, with a uniform intensity across the visible wavelength 400 - 690 nm, is perpendicularly incident on a water film, having index of refraction n2 = 1.33 and a thickness of 320 nm, that is suspended in air.

One mL of water would have a density of blank g/cm 3.

Humans can walk at an average speed of 2.00 m/s. How many hours would it take someone to walk the 4800 km from New York to Los Angeles?

Olivia is on a motorcycle that claims it can go from 0 to 36.0 km/hr in 2.45 s. What is the acceleration of the motorcycle in m/s^2?

A star has an apparent magnitude of 6.5 and an absolute magnitude of - 0.8. What is the distance to the star?

Consider the following controls in an automobile in motion : gas pedal, brake, steering wheel. what are the controls in this list that cause an acceleration of the car?

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?