Why do elements need to be heated to emit color?

What is the weight on earth of a girl with a mass of 34kg

Give two examples of friction: -being useful in everyday life -being a problem in everyday life

Consider a current carrying a wire coming out of your computer screen towards you. Which statement below correctly describes the magnetic field created by the current in the wire? 1.

When does an element become a different element? A. when radiation is emitted B. only in the number of protons in the nucleus changes C. only when the number of electrons in the outer shell changes D. when number of neutrons in the nucleus decrease

Is a glass microscope slide a conductor or insulator

What scientific question does Isaac Asimov most clearly address with his story "Runaround"? A. Should robots be allowed to marry? B, should robots be treated as members of the family? C. Can robots be trained to follow a moral code? D.

The force generated by a single muscle fiber can be increased by increasing is called

Write an expression that results in a String consisting of the third through tenth characters of the String s.

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.