Which travels at the greatest speed?

A.

sound through air

B.

light through glass

C.

sound through water

D.

light through a vacuum

An object starts from rest and falls freely for 40. meters near the surface of planet P. If the time of fall is 4.0 seconds, what is the magnitude of the acceleration due to gravity on planet P?

An amusement park ride consists of a rotating circular platform 8.03 m in diameter from which 10 kg seats are suspended at the end of 3.76 m massless chains. When the system rotates, the chains make an angle of 28.6 ◦ with the vertical.

How long does it take anya to cover the distance of 5.00 miles?

Place the electromagnetic spectrum in order from greatest frequency to lowest

Where is the magnetic field of a bar magnet the strongest? A. at the north and south poles B. next to the south pole C. in the middle of the magnet D. between the north and south poles

A tortoise travel 15 meters west, then another 13 centimeters west. How many total has the tortoise walked?

How does genetic drift affect small populations differently than large populations?

Trace fossils are recognized as evidence of which pre-existing life? plants plants and animals neither plants nor animals animals

A net force of 30 N is applied to an object with a mass of 15 kg. The object accelerates at 2 m/s2. If half the force is applied, what happens to the acceleration?

A 770 n man stands in the middle of a frozen pond of radius 10.0 m. he is unable to get to the other side because of a lack of friction between his shoes and the ice. to overcome this difficulty, he throws his 1.