1.
1 answer:
1. If my memory serves me well, the answer is: A lake may disappear for all the following reasons except <span>vegetarian and sediment build up in the bottom. Sediment is usually is a part of Lake's bed.
3. In my opinion, i</span>f tectonic movement caused an uplift of the land on which a river ran, t<span>he gradient would decrease, thus increasing stream speed and erosion. It would be very high speed erosion because of the force caused by water descending.
5. As I know, Pennsylvania is located</span><span> in the </span>north east <span>and m</span>id-atlantic<span> parts of the </span>US. According to its location, the answer is: Spring – Due to melting snow and increased rainfall.
<span>
6. The answer is: </span><span>The perched water table is above it. I've attached an illustration below to make it clear. You'll get it.
</span>
8. If I was hiking and wanted to find a source of fresh water, I'd look for a<span>n area with lots of cracks that allows groundwater to flow to the surface so you could drink from an ordinary spring. It's not the easiest way, as it's hard to find, but this water will be the most safe.
13. I'm definitely sure that the most possible answer is that t</span><span>he oil can make its way into the watershed that many communities share.
14. I think that </span><span>the main disadvantage against relying on desalination is the amount of water needed. It takes really a lot of water so it's 100% correct.</span>
3. In my opinion, i</span>f tectonic movement caused an uplift of the land on which a river ran, t<span>he gradient would decrease, thus increasing stream speed and erosion. It would be very high speed erosion because of the force caused by water descending.
5. As I know, Pennsylvania is located</span><span> in the </span>north east <span>and m</span>id-atlantic<span> parts of the </span>US. According to its location, the answer is: Spring – Due to melting snow and increased rainfall.
<span>
6. The answer is: </span><span>The perched water table is above it. I've attached an illustration below to make it clear. You'll get it.
</span>
8. If I was hiking and wanted to find a source of fresh water, I'd look for a<span>n area with lots of cracks that allows groundwater to flow to the surface so you could drink from an ordinary spring. It's not the easiest way, as it's hard to find, but this water will be the most safe.
13. I'm definitely sure that the most possible answer is that t</span><span>he oil can make its way into the watershed that many communities share.
14. I think that </span><span>the main disadvantage against relying on desalination is the amount of water needed. It takes really a lot of water so it's 100% correct.</span>
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Answer:
F = 0.1575 N
Explanation:
When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.
In this moment then
Sphere one has a charge = Q/2
Sphere three has a charge = Q/2
Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.
How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q
Sphere two has a charge = 3/4Q
Sphere three has a charge = 3/4Q
The electrostatic force that acts on sphere 2 due to sphere 1 is:
F =
F=
how = 0.42
Then
F =
F = 0.1575 N
Answer:
The rate at which radar must rotate is 0.335 rad/s.
Explanation:
Given that,
Velocity = 65 m/h = 29.0576 m/s
Angle = 15°
Suppose, the radius given by
We need to calculate the rate at which radar must rotate
Using formula of linear velocity
Where, v = velocity
r = radius
Put the value into the formula
Hence, The rate at which radar must rotate is 0.335 rad/s.
Answer:
C = 1.01
Explanation:
Given that,
Mass, m = 75 kg
The terminal velocity of the mass,
Area of cross section,
We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,
Weight of the object = drag force
R = W
or
Where
is the density of air = 1.225 kg/m³
C is drag coefficient
So,
So, the drag coefficient is 1.01.