In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2.

Calculate the amount of force at which the car strikes the barrier.

The car strikes the barrier with a force of

N.

What did Rutherford's gold foil experiment indicate? A. that electrons carried a negative change B. that protons orbited the atomic nucleus C. that atoms were densely pack with nuclear material D. that most of an atom was empty space

Read the statement. The solubility of sugar is 204 g / 100 g water at 20 °C. How many grams of water are needed to dissolve 612 grams of sugar at the same temperature? 300 g 400 g 250 g

1. Explain what is happening during a redox reaction

What is Al-27 in chemistry?

How would you describe the motion of plates in a divergent boundary?

Determine the name of the compound Li2O

Complete the reactions to show how butanoic acid may be converted to phenyl propyl ketone.

As a sample of the radioactive isotope 131I decays, its half-life (1) decreases (2) increases (3) remains the same

How many Joules of energy are required to change 10.0 gram of ice at - 2.0 C to water at 20.0 C? (use your constants) 440 J 66,000 J 880 4220 J

Why are Van der Waals forces important? A) They determine how strong dipole moments will be in polar covalent molecules B) They are the strongest type of intermolecular force that can act on polar and non-polar molecules C) They are primary