A person makes a cup of coffee by first placing a 200 W electric immersion heater in 0.32 kg of water. How much heat must be added to the water to raise its temperature from 20°C to
80°C?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.