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
olga nikolaevna [1]
3 years ago
11

What current is used to power the Untied States power grid? O alternating current O direct current​

Physics
2 answers:
QveST [7]3 years ago
4 0

Answer:

alternating

Explanation:

it was right on my quiz

Alina [70]3 years ago
3 0

Answer:

Alternating

Explanation:

It is alternating because it is easy to distribute long distance.

Direct current is found in batteries and have large voltage drop over distance.

You might be interested in
The irreversible thermite reaction (Fe2O3 + 2 Al --> 2 Fe + Al2O3) is highly exothermic, changing the temperature by over 100
likoan [24]

Answer:

the water will boil and change into a gas

Explanation:

This is because it is exothermic and releases the energy into the surroundings and the fact that water boils at 100 degrees Celsius

6 0
3 years ago
Waves move fastest in
JulijaS [17]
Liquids<span> are not </span>packed<span> as tightly as </span>solids<span>. And gases are very loosely </span>packed<span>. The spacing of the molecules enables </span>sound<span> to travel much faster through a </span>solid<span> than a gas. </span>Sound<span> travels about four times faster and farther in water than it does in air.</span>
4 0
3 years ago
Read 2 more answers
Find an equation of the line which is parallel to 2x-3y=6 and passes through the point (6,9)
tatuchka [14]
Step 2: Use the slope to find<span> the y-intercept. </span>Line<span> is </span>parallel<span> so use m = 2/5. </span>6<span>. </span>Find<span>the </span>equation<span> of a </span>line passing through the point<span> (8, –</span>9<span>) perpendicular to the </span>line<span> 3x + 8y = 4.</span>
8 0
4 years ago
When gravity increases what happens to weight?
Fynjy0 [20]
Weight increases but mass stays the same
7 0
3 years ago
Determine the angular speed, in rad/s of:
ryzh [129]

Answer:

Explanation:

A. The earth about its axis:

The earth makes one revolution in 24 hours. to know the number of revolutions per second it makes, we need to convert hours to seconds and the revolution to rad.

\frac{1 rev}{24hours}\times \frac{1 hr}{3600s}\times \frac{2\pi}{1}= 7.27 \times10^-5 rad/s

B. The minute hand of the clock makes one revolution in 60 minutes

To convert this to rad per second, we have

\frac{1 rev}{60mins}\times \frac{1 min}{60s}\times \frac{2\pi}{1}= 1.745 \times10^-3rad/s

C. The hour hand of  a clock completes one revolution in 12 hours

\frac{1 rev}{12hours}\times \frac{1 hr}{3600s}\times \frac{2\pi}{1}= 1.454 \times10^-4 rad/s

D. an egg beater turning at 300 rpm.

\frac{300 rev}{1minute}\times \frac{1 min}{60s}\times \frac{2\pi}{1}= 7.27 \times10^-5 rad/s=0.0218rad/s

6 0
3 years ago
Other questions:
  • A sanding disk with rotational inertia 1.2 × 10−3 kg ⋅ m2 is attached to an electric drill whose motor delivers a torque of magn
    13·1 answer
  • Form a hypothesis. Which will be greater, the potential energy of the car at the top of the ramp or the kinetic energy of the ca
    11·1 answer
  • A satellite is orbiting Earth with a distance R = 2REarth from Earth's center. If the satellite is moved to a distance R = 4REar
    5·1 answer
  • At a particular instant, a moving body has a kinetic energy of 295 J and a momentum of magnitude 25.1 kg · m/s.(a)What is the sp
    13·1 answer
  • A mass of 148g stretches a spring 6cm. The mass is set in motion from its equlibrium position with a downward velocity of 10cm/s
    12·1 answer
  • Calculate kp at 298.15 k for the reactions (a), (b), and (c) using δg°f values.
    10·1 answer
  • If an object is not accelerating, then one knows for sure that it is_____.​
    5·1 answer
  • Suppose that the hatch on the side of a Mars lander is built and tested on Earth so that the internal pressure just balances the
    9·1 answer
  • Giving lots of points
    15·2 answers
  • Nvm I dont need help anymore
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!