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3 years ago

Magma is classified as basaltic and andesitic or rhyolitic based on my factor

1 answer:

vladimir2022 [97]3 years ago

5 0

Magma can be classified in two ways. when it is inside the volcano it is called magma, but when it is out of the volcano it is called lava or such as :
basalt, ashes, obsidian. magma is also called the names that have been listed because magma and lava are pretty much the same thing just magma is inside the volcano and lava is outside... hope this help you

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A ladder is leaning against a vertical wall, and both ends of the ladder are at the point of slipping. The coefficient of fricti

zaharov [31]

Answer:

$\alpha =29.60$

Explanation:

Let the normal force of the wall on the ladder be N2 and the normal force of the ground on the ladder be N1.

Horizontal forces:

$N_{2}= (u1)(N_{1})$ [1]

Vertical forces:

$N_1 + (u2)(N_{2})=m*g$ [2]

Substitute [2] into [1]:

$N_2 = (u1)*[m*g - (u2)(N_2)]$

$N_2= \frac{(u1)m*g}{[1 + (u1)(u2)]}$ [3]

Torques about the point where the ladder meets the ground:

$m*g(\frac{L}{2})sin\alpha= (N_2)(L)cos\alpha+(u2)(N_2)(L)sin\alpha$

$(\frac{1}{2})*m*g=(N_2)*cot\alpha+(u2)(N_2)$

$[1 + (u1)(u2) - 2(u2)(u1)]/2 [1 + (u1)(u2)]= [(u1)/[1 + (u1)(u2)]]cot\alpha$

tanα = $\frac{2*(u1)}{1-u1*u2}$

$\alpha =tan^{-1}*(\frac{2*0.265}{1-0.265*0.253})$

$\alpha =tan^{-1}*(0.568)$

$\alpha =29.60$

4 0

3 years ago

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. How much wor

mestny [16]

It is required an infinite work. The additional electron will never reach the origin.

In fact, assuming the additional electron is coming from the positive direction, as it approaches x=+1.00 m it will become closer and closer to the electron located at x=+1.00 m. However, the electrostatic force between the two electrons (which is repulsive) will become infinite when the second electron reaches x=+1.00 m, because the distance d between the two electrons is zero:
$F=k_e \frac{e q}{r^2}$

So, in order for the additional electron to cross this point, it is required an infinite amount of work, which is impossible.

3 0

3 years ago

You have been training and can run a mile in 6.5 minutes. How long would it take to run a lap around the outside track, which is

Paha777 [63]

Answer:

1 minute 36.85 seconds

Explanation:

First we need to convert the miles into meters, as the demanded result should be in meters.

1 mile = 1,609.34 meters

Also, 6.5 minutes should be converted into seconds.

1 minute = 60 seconds

6.5 x 60 = 390 seconds

Now we need to divide the miles with the seconds to see how much meters have been run in a second.

1,609.34 / 390 = 4.13 meters

The suggested meters now should be divided with the distance run in one second.

400 / 4.13 = 96.85 seconds

So we get a result of 96.85 seconds, or 1 minute 36.85 seconds.

5 0

3 years ago

If two objects have the same mass, what determines the strength of the gravitational force between them? (4 points) Select one:

Evgen [1.6K]

According to this equation

F = G × m₁*m₂ ÷ r²

other than the mass, the distance also affects the gravitational force between two objects (same mass or not).

Therefore the correct answer is B. The distance between the objects

Future note* use formulas to help you figure these sort of questions out. (if they have a formula to begin with).

3 0

3 years ago

(I will give brainliest whoever helps me !!)

lorasvet [3.4K]

C. Forces have mass and take up space

3 0

3 years ago