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.

Upon exiting a cloud base, assume that drizzle falls for 100 seconds at its terminal velocity (1.5 m/s) before evaporating. In this case, would drizzle reach the surface if it is located 200 meters below the cloud base?

Does a steep plane prove more mechanical advantage than a gradual plane

Parallel light waves hit the surface of a still lake and reflect in the same direction. Which interaction of light and matter does this illustrate? scattering diffuse reflection refraction regular reflection

What are two ways to change the state of a substance?

What intermolecular force is responsible for the fact that ice is less dense than liquid water?

A skier is traveling down a slope that is inclined 30° above the horizontal. The coefficient of kinetic friction between the skier and the slope is 0.10. Which of the following best describes the acceleration of the skier? A) It is zero.

They are generally thought to be blank naturally occurring emotions that are present from birth

If an aircraft is loaded 90 pounds over maximum certificated gross weight and fuel (gasoline) is drained to bring the aircraft weight within limits, how much fuel should be drained?

3. Shortwave radio is broadcast between 3.50 and 29.7 MHz, To what range of wavelengths does this correspond? Why do you suppose this part of the spectrum is called shortwave radio?

How does a star's temperature change as the star ages from a main sequence star to a red giant and from a red giant to a white dwarf?