The expression that mathematically describes the force between two static electric charges is called ______________
Fill in the blank(s) with correct word
Coulomb's law
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Two identical objects are placed in a room with a temperature of 20°C. Object A has a temperature of 50°C, while object B has a temperature of 90°C. What is the ratio of the net power emitted by object B to that emitted by object A?
A) 1.7 B) 2.8 C) 81 D) 17 E) 21
The type of EM radiation emitted when high speed electrons decelerate as they are smashed into a metal target is
a. ultraviolet b. infrared c. x ray d. microwave e. gamma ray
Heat can be added to air by solar radiation, moisture
A) condensation, or contact with warm ground. B) evaporation, or contact with warm ground. C) condensation, or contact with cool ground. D) evaporation, or contact with cool ground.
Which of the following is an example of a vector quantity?
a. velocity c. volume b. temperature d. mass