A lever where the resistance force is between the fulcrum and the effort force is a second-class lever. true false

For a projectile launched from the vertically from the surface the earth with initial velocity v0, the velocity of the projectile when at distance r from the center of the earth satisifes the equation: v^2 =

Although one can electrify a glass rod by rubbing it with silk, no net charge is created. a. True b. False

Which elements will bond ionically with barium such that the formula would be written as BaX2? A) Nitrogen, chlorine, and sodium Eliminate B) Chlorine, iodine, and fluorine C) Hydrogen, bromine and aluminum D) oxygen and sulfur

A simple pendulum has a period of 1.88 s on a distant planet and a period of 0.989 s on earth. what is the acceleration of gravity on the distant planet?

The gravitational attraction between two objects will blank if the objects move further apart

A swing has a period of 10 seconds. What is its frequency?

You inflate a front tires on your car to 22 psi. Later, you measure your blood pressure, obtaining a reading of 127/61, the readingbeing in mm Hg.

Which substance is made of molecules? a. water b. table salt c. aluminum foil d. pure gold necklace

How does using a ramp to load boxes into a truck make work easier? A. Using the ramp increases the amount of force needed to move the boxes, but the boxes must be moved over a shorter distance. B.

If the mass of a material is 50 grams and the volume of the material is 12 cm^3, what would the density of the material be?