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

A brick dropped from 78m high scaffold. what is the velocity as the brick hits the pavement? show work.

What is the function of DNA polymerase? A. jadding base pairs B.) correcting errors C.) both adding base pairs and correcting errors D.) neither adding base pairs nor correcting errors

One of the purposes of an experiment is to determine whether the dependent variable affects the independent variable. T or F?

Can prolonged exposure to highly intense infrared light cause electrons to be ejected from a clean metal surface

The velocity of sound on a particular day outside is 331 meters/second. What is the frequency of a tone if it has a wavelength of 0.6 meters?

What do nuclear fission and nuclear fusion have in common?

When plug prongs are connected to the metal case of an appliance, a part that should always be placed next to the case is a a. flat metal washer. b. hexagonal aluminum shoulder. c. steel nut. d. mica washer.

For a constant voltage, increasing the resistance will cause the current to decrease

Soils are made up of mineral portion an organic portion air and water what is meant by the word organic Nonliving mineral in composition Composed of several organs Material that was produced by or was/is part of living organism Musics in nature

A car is traveling at 42.0 km/h on a flat highway. (a) If the coefficient of friction between road and tires on a rainy day is 0.107, what is the minimum distance in which the car will stop?