The brightness of a star depends on what three factors?

An eagle flies from its perch in a tree to the ground to capture and eats its prey. describe the energy transformations

A rock at rest falls off a tall cliff. what is the rock's velocity as the rock hits the ground 3.5s later

Explain why the invention of the microscope led to the discovery of cells.

A string is stretched between a fixed support and a pulley a distance 111 cm apart. The tension on the string is controlled by a weight hanging from the string below the pulley. An electomechnical vibrator is used to vibrate the string at 120 Hz.

The tissue of living organisms does not contain solid metal, like a copper wire or a zinc plate. However, electric current flows through nerves and muscles. How does current flow through living tissue?

A wave has a wavelength of 8 mm and a frequency of 11 hertz. What is its speed? Your Answer:?

Make a claim for the behavior of charged objects with other charged objects. Make a claim for the behavior of charged objects with uncharged objects. Explain. From the Sticky Tape Lab.

In what ways does a stream transport its load, and which part of the load moves most slowly? Select all that apply. A. as a suspended load B. as a bed load C. as a dissolved load D. as a dissolved load

Use what you have learned so far about heat transfer to explain how hot rocks can be used to make steam?

Why is copper a good conductor?