For conduction to occur,

A. dark objects are required to absorb energy.

B. substances must be in contact with each other.

C. hot and cold regions must flow within a substance.

D. heat must transfer from an area of less energy to more energy.

How many types of quarks are there and what is the name of one of them

What is the sequence of bases on Dna strand b from left to right

Which best explains why a crystal is incompressible?

Describe the oceans and explain how the water cycle affects the salinity of the ocean

An ant carries a morsel of food 4.26 meters along a straight path to his nest. He then turns around and follows the path back to the source of the food. What is his displacement when he arrives back at the food source?

How are the relationships of elements in a group different from the relationships of elements in a period?

Children in a tree house lift a small dog in a basket 4.00 m up to their house. If it takes 187 J of work to do this, what is the combined mass of the dog and basket?

What happens to the speed of the particles if the temperature is increased

A 65-year-old male enters the hospital with high blood pressure, damaged lungs, low blood-oxygen concentration, and throat cancer. What are all of these symptoms associated with?

At a certain factory, 340 kg crates are dropped vertically from a packing machine onto a conveyor belt moving at 1.00 m/s. (A motor maintains the belt's constant speed.) The coefficient of kinetic friction between belt and crate is 0.400.