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3 years ago

15

While hiking in the mountains, tanya observed a narrow and steep valley with a stream at the bottom of it. what most likely caus

ed the valley to first form?

2 answers:

leva [86]3 years ago

8 0

all of the answers that i have gotten off this website have been false ya'∞ll should be a shamed

Juliette [100K]3 years ago

5 0

Erosion over thousands of millennia from the stream or river in the valley

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A bumper cart has a mass of 200 kg and has a protective bumper around it that behaves like a spring. The spring constant is 5000

34kurt

Part A:
For this part we’re assuming all the kinetic energy of the moving bumper car is converted into elastic potential energy in the spring since the car is brought to rest. Therefore you can find the total kinetic energy to get your answer:

KE = ½ mv^2
KE = ½ (200)(8)^2
KE = 6400 J

Part B:
Now you can use Hooke’s law to find the force:

F = kx
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3 years ago

A reservoir located in the mountain 250 m above sea level flows through a pipe to a hydroelectric plant in a town at sea level.

Pavlova-9 [17]

Answer:

v₂ = 70 m / s

Explanation:

For this exercise let's use Bernoulli's equation

where subscript 1 is for the top of the mountain and subscript 2 is for Tuesday's level

P₁ + ½ ρ v₁² + ρ g y₁ = P₂ +1/2 ρ v₂² + ρ g y₂

indicate that the pressure in the two points is the same, y₁ = 250 m, y₂ = 0 m, the water in the upper part, because it is a reservoir, is very large for which the velocity is very small, we will approximate it to 0 (v₁ = 0), we substitute

ρ g y₁ = ½ ρ v₂²

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3 years ago

what is the ratio of ey,final, the maximum value of the y-component of the electric field immediately following the last polariz

OleMash [197]

That ratio is 2 .

<h3>What is ratio?</h3>

A ratio is the comparison of the two numbers bydivision.

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1 year ago

Raju learned about green plants, he found out that green plants can make their own food in the presence of sunlight a) Name the

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2 years ago

Calculate the magnitude of the gravitational force exerted by the Moon on a 79 kg human standing on the surface of the Moon. (Th

Luden [163]

Answer:

F= 134.92 N

Explanation:

Given that

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The mass of the man ,m = 79 kg

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The force exerted by moon is given as

$F=G\dfrac{Mm}{R^2}$

Now by putting the values in the above equation we get

$F=6.67\times 10^{-11}\times \dfrac{79\times 7.4\times 10^{22}}{(1.7\times 10^6)^2}\ N\\F=134.92 N$

Therefore the force will be 134.92 N.

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8 0

3 years ago