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
Nuetrik [128]
3 years ago
5

Switches, flashers, and similar devices controlling transformers and electronic power supplies shall be rated for controlling in

ductive loads or have a current rating not less than ___ percent of the current rating of the transformer.
a. twice

b. three

c. two and one-half

d. four
Physics
1 answer:
Reika [66]3 years ago
5 0

Answer:

Option A - twice

Explanation:

You might be interested in
How much water is stored in polar ice caps glaciers and permanent snow
antoniya [11.8K]

Answer:

1.7% is stored in the polar icecaps, glaciers, and permanent snow

Explanation:

70% of the Earth's surface is covered with water; However, only a small percentage, 0.025%, is suitable for human consumption. A limited resource whose demand, according to the forecasts of the Organization for Economic Cooperation and Development (OECD), will skyrocket up to 55% globally between 2000 and 2050.

In the attached infographic we observe that the total volume of water on Earth is 1,386 million cubic kilometers, of which<em> </em><u>1.7% is forming polar ice, cap glaciers and permanent snow</u>.  1,338 million cubic kilometers of that water is in seas and oceans, that is, 96.5% is in seas and oceans, that is, it is salt water that cannot be drunk.

Only 3.5% of the Earth's water is fresh, but of this percentage, only 1% of the Earth's fresh water flows through the river basins in the form of streams and rivers.

8 0
3 years ago
Can charging by friction only occur in solids
Sonja [21]
Yes you are right cuz charging by friction cant be done in fluids( liquid and gas)
6 0
3 years ago
How far can a sound wave travel in 90 seconds when the ambient air temperature is 10 C?
Ksju [112]

Answer:

s = 30330.7 m = 30.33 km

Explanation:

First we need to calculate the speed of sound at the given temperature. For this purpose we use the following formula:

v = v₀√[T/273 k]

where,

v = speed of sound at given temperature = ?

v₀ = speed of sound at 0°C = 331 m/s

T = Given Temperature = 10°C + 273 = 283 k

Therefore,

v = (331 m/s)√[283 k/273 k]

v = 337 m/s

Now, we use the following formula to calculate the distance traveled  by sound:

s = vt

where,

s = distance traveled = ?

t = time taken = 90 s

Therefore,

s = (337 m/s)(90 s)

<u>s = 30330.7 m = 30.33 km</u>

6 0
3 years ago
Scientist do their work by using inquiry. Inquiry is:
lana [24]

Answer:

an act of asking for information.

8 0
3 years ago
Read 2 more answers
Please help will mark brainliest
andreyandreev [35.5K]

Answer:

b

Explanation:

it melts yes but it's still water [same element] so there fore it's a physical change

7 0
3 years ago
Read 2 more answers
Other questions:
  • What would happen to the apparent change in mass if the direction of the current is reversed?
    12·1 answer
  • The evaporation of the oceans surface water as part of the water cycle is caused by
    12·1 answer
  • How do the properties of an electromagnetic wave change as a result of increasing the period of the wave?
    11·1 answer
  • A 1200-kg car is travelling east at a rate of 9 m/s. A 1600-kg truck is travelling south at a rate of 13 m/s. The truck accident
    11·1 answer
  • What are the benefits to resistance training ?
    9·1 answer
  • A quick USB charger claims its output current is 1.97Amp. We know that the standard USB output voltage is 5V. What is the output
    15·1 answer
  • Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far a
    7·1 answer
  • Helppppppppppopppppppp​
    8·2 answers
  • What is the relationship between the magnetic and electric fields along the
    12·2 answers
  • NEED HELP PLEASEEE 15 POINTS
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!