Ual Learning 2.0

Which components do all circuits have in common? Select three options.

energy source

voltmeter

wires

ammeter

device that needs electrical energy

You obtain a 100-W light bulb and a 50-W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct? a.

You stand on the seat of a chair and then hop off. A) During the time you are in flight down to the floor, the Earth moves toward you with what acceleration? B) The Earth moves toward you through what distance?

What is the advantage of having nuclear physics?

To find the correct units for the speed of a car we must ... A) Multiply the distance the car travels by the time it takes to travel. B) Add the distance the car travels and the time it takes to travel.

A baby cow has a mass of 100 kg and chases its mother at a speed of 0.5 m/s. What is the magnitude of its momentum?

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?

A student builds a simple circuit and a magnet under one of the circuit wires. When the switch is closed charges flow int the circuit and the wire moves

Cite an example in which a force is exerted on an object without doing work on the object

Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work? A.ΔW = ΔQ + ΔU B.ΔW = ΔU - ΔQ C.ΔQ = ΔU+W D.ΔU=Q - W