What are three types of variables in a controlled experiments?

Jenny, an average teenager, writes in her diary: "No one understands how hard my life is and how confused I get. Why is this happening to me? Why am I so different?" A developmental psychologist would probably say that Jenny is expressing A.

The factors that affect the weight of an object are: location on earth mass of the object altitude temperature speed (more than one answer)

A parallel circuit differs from a series circuit in that a. it needs less voltage. b. there's more resistance in the circuit. c. it has more than one path for current to flow. d. current can flow easier through a parallel circuit.

a ship needs to sail to an island that is 1000 km south of where the ship starts. if the captain sails south at a steady velocity of 30 kmh for 30 hours, will the ship make it? Explain.

Which statement best describes acceleration? Acceleration is the rate of change of force of an object. Acceleration is the rate of change of the direction of an object. Acceleration is the rate of change of velocity of an object.

What are a few things that could not be used as evidence?

Examples were friction is not useful

How do the following factors affect the resistance of a wire? a. Temperature b. Length c. Diameter

The metric system is based on units of A: twenty five B fives C: sixteen D: tens

Which of the following could be used to send an receive electromagnetic waves at the same time?