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mrs_skeptik [129]
4 years ago
9

As populations in North America grow, so does the need for wood to build houses, stores, and other buildings. Select the stateme

nt that best describes the long–term global effects of this behavior.
Physics
1 answer:
Rainbow [258]4 years ago
7 0
In order to meet the demand, forests have been cut down at an alarming rate. If we do not find another source of building materials, our forests, an important natural resource, will all disappear.  AKA. Deforestation.
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A student stands with both feet on some scales in order to measure his weight.
Neko [114]

Answer:

500 N

Explanation:

Because even if he lift one foot his weight will be same as the pressure applied on the scale will be the same and will not change it is not that the scale measures each foot separately

3 0
3 years ago
45 points PLEASE HELP ME!!!!<br> Describe Rutherford's contribution to the atomic model
GaryK [48]
Rutherford was the first person to make a model of an atom that was mostly accurate, the only thing is in his early model there were electrons and protons, at this time Rutherford did not know of a neutron and was not discovered until 1932.<span />
7 0
3 years ago
Read 2 more answers
An Earth satellite moves in a circular orbit 561 km above Earth's surface with a period of 95.68 min. What are (a) the speed and
crimeas [40]

Explanation:

It is given that,

Radius of earth, r = 6371 km

An earth satellite moves in a circular orbit above the Earth's surface, d = 561 km

So, radius of satellite, R = 6371 km + 561 km = 6932 × 10³ m

Time taken, t = 95.68 min = 5740.8 sec

(a) Speed of the satellite is given by :

v=\dfrac{d}{t}

d = distance covered

For circular path, d = 2πR

v=\dfrac{2\pi \times 6932\times 10^3\ m}{5740.8\ sec}

v = 7586.92 m/s

(b) Centripetal acceleration is given by :

a=\dfrac{v^2}{R}

a=\dfrac{(7586.92\ m/s)^2}{6932\times 10^3\ m}

a=8.3\ m/s^2

Hence, this is the required solution.

3 0
4 years ago
One of the 5 channels in the 49 MHz frequency range operates at 49.830 MHz. 49.830 MHz is
trapecia [35]

The big 'M' in MHz means 'million'.

So 49.830 MHz means <em>49,830,000 Hz.</em>

5 0
4 years ago
Read 2 more answers
If the wavelength of a wave stays the same and the speed doubles, what happens to the frequency of the wave?
Lapatulllka [165]

Explanation:

velocity = wavelength × frequency => v= f1 × λ => f1 = v/ λ

λ = stays the same

v = doubles

2v = f2 × λ

2v/λ = f2

now ,

f2/f1= 2vλ/ vλ = 2

f2 = 2f1

therefore frequency is doubled

7 0
3 years ago
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