Which of the following correctly identifies a voltage source and its method of developing electric potential? a. primary cell-heat action on a device b. thermocouple-chemical action c. dry cell-chemical action d. generator-genetic action

The four living things seen here, dog, flower, algae, and bacteria, are all made of cells. A - C are multicellular, but D is unicellular. What do all four have in common? A) They are all equally complex. B) They are all made of at least one cell.

Which of the following will receive electrical impulses next, after the structure indicated by the red arrow?

A loop of wire is perpendicular to a magnetic field such that the field is coming straight at you through the loop. The field begins to decrease in magnitude.

The maximum restoring force that can be applied to the disk without breaking it is 29,000 N. What is the maximum oscillation amplitude that won't rupture the disk?

How do you find the velocity when an object is at rest?

A race car travels a circular track at an average rate of 135 mi/hr. The radius of the track is 0.450 miles. What is the centripetal acceleration of the car?

Between a substance and a mixture.

Two massive objects are fixed in position. A third object is placeddirectly between the first two at the position at which the totalgravitational force on the third object due to the two massiveobjects is zero.

Which statement best describes the magnetic properties of a material? Magnetic materials have many spinning, unpaired electrons Paired electrons of magnetic materials can move to other atoms Electrons of magnetic materials are strongly held by

when we examine the structures of the other terrestrial planets in our solar system, we see that their structure is similar to Earth's. Why do you think this is the case?