1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alisha [4.7K]
3 years ago
7

Which statement is true? A. A resistor alters current and a switch turns current on and off B. A resistor measures voltage, and

a switch changes AC to DC or DC to AC C. A resistor alters current and a switch measures voltage D. A resistor changes AC to DC or DC to AC, and a switch turns current on and off
Physics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

A. A resistor alters current and a switch turns current on and off

Explanation:

Resistor is the passive component that reduces the flow of current. Switch is the electrical device that turns on or off the current by closing and opening the electrical circuit.

Thus option A. A resistor alters current and a switch turns current on and off  is correct.

You might be interested in
Which of the following is the most likely global climate change?a.a decrease in the overall temperature of the Earthb.an increas
andrew11 [14]
I believe the answer is C. an increase in the number of cold climates
5 0
3 years ago
Read 2 more answers
We often use a spoon to cool coffee by stirring. Some of the heat is conducted from the coffee to the air by this method, but th
Ilia_Sergeevich [38]

Answer:

Explanation:

heat lost by coffee = heat gain by aluminum spoon

heat lost by coffee = mc ( 85° C - T)

175 ml of water = 175 grams

175 grams = (175 / 1000) kg = 0.175 kg

heat loss by coffee = 0.175 × 4182 J/Kgk ( 85 - T) = 731.85 ( 85-T) = 62207.25 - 731.85 T

heat gain by aluminum spoon = 0.012kg × 897 J/kgK ( T - 22) = 10.764 T - 236.808

10.764 T - 236.808 = 62207.25 - 731.85 T

10.764 T + 731.85 T = 62207.25 + 236.808

T = 84.086 ° C approx 84°C

3 0
3 years ago
A worker assigned to the restoration of the Washington Monument is checking the condition of the stone at the very top of the mo
Svetllana [295]

Answer:

The gravitational potential energy of the nickel at the top of the monument is 8.29 J.

Explanation:

We can find the gravitational potential energy using the following  formula.

GPE=mgh

Identifying given information.

The nickel has a mass m=0.005 \,kg, and it is a the top of Washington Monument.

The Washington Monument has a height of h=555 \, ft, thus we need to find the equivalence in meters using unit conversion in  order to find the gravitational potential energy.

Converting from feet to meters.

Using the conversion factor 1 m = 3.28 ft, we have

h = 555 \, ft \times \cfrac{1 \, m}{3.28 \, ft}

That give u s

h = 169.2 \, m

Finding Gravitational Potential Energy.

We can replace the height and mass on the formula

GPE=mgh

And we get

GPE=(0.005)(9.8)(169.2) \, J

\boxed{GPE=8.29 \,J}

The gravitational potential energy of the nickel at the top of the monument is 8.29 J.

7 0
3 years ago
Read 2 more answers
Virginia���s blue ridge mountains were pushed up when the north american and african continents collided in a process known as
Amiraneli [1.4K]
It is either c. folding or b. faulting
6 0
3 years ago
Read 2 more answers
When you ride a bike and make a turn, you can feel your body trying to
Rina8888 [55]

Answer:first law

Explanation:

it states the a body in motion or rest maintain its state until an external force is acted on it

8 0
3 years ago
Other questions:
  • What is the amount of heat, in calories, given off from a 5 g piece of aluminum when it cools from 80°C to 20°C? The specific he
    15·1 answer
  • 2. A child observes a caterpillar walking on a window sill. The caterpillar walks 18 cm to the left, then 6 cm to
    5·1 answer
  • You know that you sound better when you sing in the shower. This has to do with the amplification of frequencies that correspond
    11·1 answer
  • A bicycle rider travels 50.0 km in 2.5 hours what is te bicyclist average speed
    8·2 answers
  • For each of the following statements determine whether it is correct or incorrect.
    10·1 answer
  • Plz help me with these :)
    12·2 answers
  • what is the average acceleration of a car if a car rest from 0m/s and reaches a final velocity is 50m/s in 10m/s
    11·1 answer
  • On Earth, the gravitational field strength is 10 N/kg. Calculate E for a 4 kg bowling ball that is being
    12·1 answer
  • . In a wave, …………………… is carried from one place to another.
    10·1 answer
  • Please answer this question ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!