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3 years ago

If the seafloor is spreading why isn't earth getting bigger?

1 answer:

7 0

Well there are areas of the seafloor that are spreading due to tectonic plates moving apart but there are also places where these plates meet and one slides under the other (subduction zones) as a result, the earth is not getting bigger since these two actions cancel each other out.<span>
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One property that makes electromagnetic waves differ from other types of waves is that they can

iren2701 [21]

Electromagentic waves can travel through space. they don't require any medium.

5 0

3 years ago

Read 2 more answers

A 6.30 kg piece of solid copper metal at an initial temperature T is placed with 2.00 kg of ice that is initially at -16.0 ∘C. T

Viktor [21]

Answer:

179 degree

Explanation:

Solid copper will lose heat to warm up and melt ice . Since all the ice has not melted so final temperature of mixture will be zero.

heat gained by ice to reach temperature of zero degree

= mass of ice x specific heat of ice x rise of temp

= 2 x 2093 x 16 = 66976 J

Heat gained to melt 1.1. kg of ice

mass x latent heat of ice

1.1 x 334000

= 367400

total heat

= 367400 + 66976

=434376

Heat lost by copper

= 6.3 x 385 x T

where 385 is specific heat of copper and T is initial temperature

heat lost = heat gained

6.3 x 385 T = 434376

T = 434376 / (6.3 x 385)

= 179 degree .

3 0

3 years ago

A car travels at a constant speed around a circular trackwhose

Mashutka [201]

Answer:

a = 0.77 m/s^2

Explanation:

The centripetal acceleration is given as

$a = \frac{v^2}{R}$

The velocity of the car can be calculated using the circumference of the track and the period of the car.

$2\pi R = v T\\2\pi 2.6 = v 360\\v = 0.045 ~km/s = 45~m/s$

So, the acceleration is

$a = \frac{45^2}{2.6\times 10^3} = 0.77~m/s^2$

8 0

4 years ago

The law of combining volumes only applies under these conditions EXCEPT :_________.

kenny6666 [7]

Answer:

measured at constant temperature and pressure

Hope this helps :)

3 0

2 years ago

The age of the universe in seconds

Marianna [84]

Answer:

4.351968e+17 seconds

Explanation:

So I googled age of the universe and it says 13.8 billion years.

you'll have to do some conversions:

in one year, there are 365 days. in one day, there are 24 hours. in one hour, there are 3600 seconds.

$\frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}$

so you have to add in the current age of the universe to that equation:

$\frac{x seconds}{13.8 bil years} x \frac{1 year}{365 days} x \frac{1 day}{24 hours} x \frac{1 hour}{3600 seconds}$

arranged so that the proper "units" will read as "x seconds" at the end of the equation.

then you do the math to find x:

13.8 billion x 365 x 24 x 3600 = 4.351968e+17 seconds.

which would be 435,196,800,000,000,000 seconds

Hope this helps :)

7 0

4 years ago