A fulcrum moving a resistance of 200 g has a distance to the fulcrum of 20 cm, the effort mass of 50 g has a distance to the fulcrum of 80 cm. The resistance moves 10 cm, the effort moves 40 cm. Calculate the efficiency of the lever.

What is most similar about alkaline earth metals

A dog walks 14 meters to the west and then 20 meters back to the east.

Development begins the instant you are conceived. t or f

What does a Lewis structure diagram represent? Select one: a. The atomic symbol of an element surrounded by valence electrons b. The atomic mass of an element c. The name of an element surrounded by the number of protons d.

Which of the following stimulates the production of red blood cells? Caffeine Medium-chain triglycerides Erythropoietin Carnitine

What is the energy equivalent of 0.026 kg?

Which of the following materials requires the most amount of heat to raise (or lower) its temperature by one degree Celsius? Assume we have the same amount of each material, 10 grams. Feel free to reference Table 14.1 in the OpenStax textbook.

If we decrease the amount of force applied to an object, and all other factors remain the same, the amount of work completed will A decrease. B increase. C increase, then decrease. D not change.

Passing an electric current through a certain substance produces oxygen and sulfur. This substance cannot be a (n)

The atomic mass of an element is A. The average mass of all the isotopes of the element B. A measure of the density of that element C. The mass of the most common isotope of that element D.