The resistance of a conductor is directly proportional to which of the following quantities? length, cross-sectional area, charge, potential

What two gases are the sun mostly made of

What is the outcome of all chemical changes when two substances are combined? A new substance forms with identical properties. The two substances release an odor. The two substances change color. A new substance forms with different properties.

What is the dimension of n if force is given by the equation F=6pie rvn

A car weighing 1600 kg is accelerated to 30m/s from start in 20s. Calculate the acceleration of the car and the magnitude of the force applied.

Do changes in scientific knowledge occur often?

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False