Which of the following would be considered basic science questions?

A. How can cars be made safer?

B. What is the best way to improve a gas engine?

C. Why do many birds have colorful feathers?

D. What are the stages in the life cycle of a star?

In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R: [ I=V/R. ] It's also true that resistance is directly proportional to the length of the wire.

An object has a kinetic energy of 500 J and a mass of 30kg. how fast is the object moving?

Which object is in static equilibrium? A) a rolling ball that has a net force acting on it B) a cruising car that has no net force acting on it C) a book that has no net force acting on it and is sitting on a table D) a vase that has a net force

The best way to show two atoms interact with each other

When a person does work on an object, the object gains energy. As a bicycle rider rides from the bottom of a hill up a hill, the energy from the work being can become which combination of types of energy.

Both artists and scientists contribute to our understanding of the world around us. Identify the ways that art and science are similar. Check all that apply.

An automobile accelerates from rest at 1 + 3 * sqrt (t) mph/sec for 9 seconds. how far does it travel in those 9 sec?

A glass lens, n glass = 1.52, has a 131 nm thick antireflective film coating one side, n film = 1.25. White light, moving through the air, is perpendicularly incident on the coated side of the lens.

An automobile steering wheel is shown. The ideal mechanical advantage of this wheel and axle is. If a driver must exert a force of 2 N to overcome an axle resistance of 16 N, the AMA of the steering wheel is and its efficiency is__ %.?

How does the law of conservation of energy apply to machines? -Machines create energy from scratch. -Machines consume energy until no energy remains. -Energy transferred to a machine equals energy transferred from it.