Which organism was the first to develop in the absence of oxygen?

A.

algae

B.

cyanobacteria

C.

prokaryotic

D.

eukaryotic

A horizontal force of 200N is applied to a 55kg cart across a 10m level surface. If the cart accelerates at 2.0m/s^2, then what is the work done by the force of friction as it slows the motion of the cart?

Consider two planets in space that gravitationally attract each other if the mass of one of them stays the same and the mass of the other is doubled AND the distance between them is doubled, then the force between them changes by what factor? A.

What type of current flows inside the flashlight

A + 1.0 c charged object and a + 2.0 c charged object are separated by 100 m. where should a - 1.0x10-3 c charged object be placed on a line between the positively charged objects so that the net electrical force exerted on the negatively charged

When a gun is fired how come yhe recoil is not strong enough to knock the shooter over?

Identify characteristics of objective personality tests. -self-report -scientific -paper-and-pencil -questions about behavior -objective -potentially biased answers Multiple Choice-Psychology

The Pony Express was a mail delivery system in the Old West that used a series of men on horseback to deliver mail from St. Joseph, MO to Sacramento, CA along a trail that was 2000 miles long.

In the virtual lab, calculations were made of the predicted diffraction angle, using the formula θ ≈ StartFraction lambda over L EndFraction.

What trends were seen in Mendeleev's periodic table?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks