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.

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.

What is formed when amino acids form long chains or polymerize