How much horsepower is needed to tow 4,076451 lbs at 40 mph up a 7% grade

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7