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
andreev551 [17]
3 years ago
9

The amount of sea ice and permafrost have steadily decreased near Shishmaref, Alaska, over the last century. The loss of ice has

allowed ocean waves to erode the land and destroy property. What might be causing this melting?
Physics
1 answer:
Dovator [93]3 years ago
6 0

Answer:

Climate change, where there is an increase in the average temperature, due to continuous human activities. These activities increase greenhouse gases in the atmosphere.

Explanation:

Alaska is the largest state in the United States, and it has a cold climate. The climate changed over time as human activities such as coal mining contributed to greenhouse gas emissions leading to global warming. Over the years. the variations in weather leading to climate change melt the permafrost (frozen ground below the soil surface) causing ocean waves to erode the land and destroy property.

You might be interested in
6.3 Calculate the current that flows through the element of a heater when the potential difference is 250V and the resistance of
ryzh [129]

Answer:

16.66

Explanation:

3 0
2 years ago
A manufacturer of CD-ROM drives claims that the player can spin the disc as frequently as 1200 revolutions per minute.
Leya [2.2K]

a. 7.0 m/s

First of all, we need to convert the angular speed (1200 rpm) from rpm to rad/s:

\omega = 1200 \frac{rev}{min} \cdot \frac{2\pi rad/rev}{60 s/min}=125.6 rad/s

Now we know that the row is located 5.6 cm from the centre of the disc:

r = 5.6 cm = 0.056 m

So we can find the tangential speed of the row as the product between the angular speed and the distance of the row from the centre of the circle:

v=\omega r = (125.6 rad/s)(0.056 m)=7.0 m/s

b.  875 m/s^2

The acceleration of the row of data (centripetal acceleration) is given by

a=\frac{v^2}{r}

where we have

v = 7.0 m/s is the tangential speed

r = 0.056 m is the distance of the row from the centre of the trajectory

Substituting numbers into the formula, we find

a=\frac{(7.0 m/s)^2}{0.056 m}=875 m/s^2

3 0
3 years ago
Rearrange the equation = KE<br> -1<br> 2<br> - my? to solve for v. Show your work.
vesna_86 [32]

Answer:

See below

Explanation:

KE = 1/2 m v^2     multiply both sides by 2

2 (KE) = mv^2       divide both sides by m

2(KE) / m = v^2        sqrt both sides

√ [(2KE)/m ] = v

3 0
2 years ago
The Strength of an electromagnet can be increased by reducing the number of turns on the wire coil true or false
ad-work [718]

Answer:the answer is true

Explanation:because as u add more coil/wrap more coil around the nail the field  get stronger and stronger to attract more nails

Hope this helped

5 0
3 years ago
Starting velocity: 50 m/s
Taya2010 [7]

Please find attached photograph for your answer. Please do comment whether it is useful or not

6 0
3 years ago
Other questions:
  • When on object’s spectral lines are shifted from their rest wavelengths to longer wavelengths, we say that the object’s spectrum
    7·1 answer
  • (01.02 MC) Nicole pushes her bike up a hill. Overhead, the sun exerts a gravitational force on Earth. Which statement is true ab
    9·2 answers
  • A horse performs 15000 joules of work pulling a wagon for 20 seconds what is the horses power
    7·1 answer
  • After an oil spill in the ocean, what happens to bacteria that break down the oil?
    9·1 answer
  • A 60.7 kg astronaut is floating in space. She takes her 3.1 kg astronaut drill from her toolbelt and throws it to the right. It
    13·1 answer
  • Jumping up before the elevator hits. After the cable snaps and the safety system fails, an elevator cab free-falls from a height
    9·1 answer
  • How is momentum conserved is a Newton's cradle when one steel ball hits the other
    7·1 answer
  • A 7 cm thick and 20 cm long wedge is used to pierce a 3cm long log of diameter 20cm what is the velocity ratio of the wedge
    8·1 answer
  • What happens to waves near the shore?
    5·1 answer
  • The temperature of a substance is 45 C. Convert this to Kelvin.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!