PHYSICS HIGH SCHOOL

Which of the following is a circuit component whose function includes changing an open circuit to a closed circuit?A. wire
B. switch
C. power source
D. load

Answers

Answer 1
Answer:

Answer:

B. Switch

Explanation:

A device designed to open or close a circuit under controlled conditions is called a switch. The terms “open” and “closed” refer to switches as well as entire circuits. An open switch is one without continuity: current cannot flow through it.

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Answer 2
Answer: the answer is B. Switch

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A liter is the same as a cubic meter. a. True b. False
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Any substance that yields a hydrogen ion when placed in a water solution is called a(n) _____.
If a train is 100 km away, how much sooner would you hear the train coming by listening to the rails (iron) as opposed to listening for it standing by the track? In other words, how much faster will the sound travel through the iron rails than through the air? Assume the air temperature is 0°C.Sound will reach you ______ seconds sooner.302324280
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2 What does how much, how
long and how
often have to do with exposure to chemicals?

Answers

Well how much, how long, and how often  

For example how much is like how much a object is left in a small room with chemicals

How long is the time

how often is how much the same cycle is done repeatedly

Choose the correct description, of what happens to the electron speeds in a more massive white dwarf. Choose the correct description, of what happens to the electron speeds in a more massive white dwarf. As the mass of a white dwarf increases, the pressure must increase to resist gravity. To do this, the electrons must move faster. As the mass of a white dwarf increases, the pressure must decrease to resist gravity. To do this, the electrons must move faster. As the mass of a white dwarf increases, the pressure must decrease to resist gravity. To do this, the electrons must move slower. As the mass of a white dwarf increases, the pressure must increase to resist gravity. To do this, the electrons must move slower.

Answers

Answer:

As the mass of a white dwarf increases, the pressure must increase to resist gravity. To do this, the electrons must move faster.

Explanation:

A white dwarf also known as degenerate dwarf is a star or an electron degenerate matter and is as massive as the Sun but only about as large in size as planet Earth.

The maximum mass of a white dwarf is about 1.4 times the mass of the Sun.

Also, as the mass of a white dwarf increases, the pressure must increase to resist gravity and to do this, the electrons must move faster.

A person runs 400 meters in a straight line. Determine their distance and displacement. Is the distance equal to the displacement for a person that runs 2.5 times around a circular track?

Answers

Answer:

their distance and displacment are both 400 meters. and No distance and displacement are not equal for a person who runs 2.5 times a circular track.

Explanation:

if you run in a ircle you are coming back to the starting poing ad remember distane is the total length travlled while displacement is the final- initial length

The weight of an object isa. the force of gravity on its mass.
b. the amount of matter in an object.
c. the tendency of an object to resist motion.
d. the tendency of an object to continue moving in a straight line.

Answers

The weight of an object is the force of gravity on its mass. The answer is letter A. The acceleration due to gravity is the acceleration on an object caused by force of gravitation. It means that the earth has a gravitational field that projects all bodies on earth towards its center. The gravity of an object or body of an object is high on earth than at the atmosphere. It has an average of gravitational constant equal to 9.8066 or 9.8 meters per second. In truth, the acceleration of the object depend upon its location, the latitude and altitude, on earth.     

Consider a point located equidistant from point charges A and B, labeled C in the diagram. If A and B have the same magnitude charge, but A is positive and B is negative, which way does the electric field vector point at Ca) up
b) down
c) right
d) left

Answers

I'm pretty sure its' A. up, Hope this helps :)

Which describes what happens when a balloon is rubbed with a wool cloth?A.
Electrons move from the atoms in the balloon to the atoms in the cloth, causing the cloth to have a negative charge.

B.
Everyday objects do not have electric charges, so neither the balloon nor the cloth can gain or lose electrons.

C.
Electrons move from the atoms in the cloth to the atoms in the balloon, causing the balloon to have a negative charge.

D.
Electrons are shared equally between the atoms of the balloon and the atoms of the cloth, making both electrically neutral.

Answers

the correct answer would be a hope this helps :D
 The answer is C. because when you rub the balloon on the wool the electrons move from the balloon to the wool. 

Also when doing this you, can hear the static electricity which proves my point. 
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