A blank is the small number to the lower right of the chemical symbol. It tells how many atoms of the element are present in the blank

The low areas created as a sound wave propagates are called rarefactions

A tennis ball has a mass of 0.058 kg and is moving to the right at 40 m/s. What is the momentum of the tennis ball? (p = mv) 2.32 690 1.35 2320 A pinanong ball has a mass of 0 045 ka Approximately how fast must the ping

Calculate the work done in lifting a 500-N barbell 2.2 m above the floor. What is the potential energy of the barbell when it is lifted to this height? be bor

Calculate the force exerted by a machine that does 4800 J of work over a distance of 22.5 m?

When you are using goggles or a face mask under water, everything appears enlarged.

Ben franklin showed that 1 teaspoon of oil would cover about 0.50 acre of still water. if you know that 1.0 x 104m2 = 2.47 acres, and that there are 5.0 cm3 in a teaspoon, what is the thickness (in cm) of a later of oil?

Which of the following are indicators of chemical changes (choose all that apply): 1. A solid is formed 2. Heat is released or absorbed 3. A gas is released 4. Light or Sound is Produced 5. State of Matter changes 6. A color change takes place 7.

How long do your guests have to wait until the steaks are ready?

Newton discovered that gravity behaves differently in space than it does on Earth. true or false?

A block of wood loses 160 j of gravitational potential energy as it slides down a ramp. if it has 90 J of kinetic energy at the bottom of the ramp we can conclude that