Which of the following is not a chemical that can be created by chemists?

O

A. Plastic

O

B. Helium

O

C. Sodium

O

D. Gasoline

The ocean is a store house of carbon which is absorbed in the form of carbon dioxide from the air. The carbon dioxide dissolved in ocean waters is used by marine plants to make food by the process of photosynthesis.

If you change the number of loops in a solenoid, what happens to the strength of the magnetic field of an electromagnet?

Keeping careful track of when air filters have been changed in guest room heating and cooling units is an example of which maintenance activity? Planning Organizing Recording Implementing

A gas station owner suspects that he is being overcharged for gasoline deliveries by a gasoline supplier. The overcharge seems particularly high in the summer months.

Which waves in the electronic spectrum are considered los energy waves?

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are

How much force would be needed to move a car with the mass of 100kg to an acceleration of 5m/s/s?

A pendulum bob is made from a sphere filled with water. What would happen to the frequency of vibration of this pendulum if the sphere had a hole in it that allowed the water to leak out slowly?

Elias serves a volleyball at a velocity of 16 m/s. The mass of the volleyball is 0.27 kg. What is the height of the volleyball above the gym floor when its total mechanical energy is 41.70 J? Round to the nearest number.

Which of the following is the best description of a graph? A. Equations that can be plotted B. A representation of an equation C. Independent and dependent variables D. x and y lines