What pressing problem did the invention of the cotton gin solve?

A. removing seeds from cotton fiber

B. efficiently harvesting raw cotton

C. quickly plowing the cotton fields

D. irrigating the fields of cotton plants

the answer is A.

The use of gravity waves, which do not interact with matter in the way electromagnetic waves do, hopefully will enable astronomers to study the actual formation of black holes and neutron stars. A.

How would you respond to a person who tells you not to believe scientific theory because theories are only possible for explanations that are not packed by evidence

The wavelength of a transverse wave is often measured from

Which most accurately describes the path that sound travels?

How is wind direction indicated on a weather map?

How do evaporation and condensation relate to heat

Resistance = 0.1 ohm Current = 60 amps Voltage = ? 0.6 6 60 600

The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. An engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill.

What are sun spots?

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