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mote1985 [20]
3 years ago
10

Which of the following could possibly be predicted? Earthquakes Landslides Foreshocks Volcanic eruptions

Physics
1 answer:
NeTakaya3 years ago
6 0

Answer:

Volcanic Eruptions

Explanation:

The volcano can start showing signs that it may be about to explode.

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Acceleration is a vector quantity.<br> O<br> O<br> A. True<br> B. False
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how much horse power is needed to move a box that has a force of 1,492 newtons a distance of 2 meters in 1 second
stellarik [79]

This one is a piece 'o cake if you know the definition
of a horsepower, and impossible if you don't.

It is:            1 horsepower = 746 watts

Also, remember that  1 watt = 1 joule/second
                
Now:            Work = (force) x (distance)

To move this box 2 meters,

                     Work = (1,492 newtons) x (2 meters) = 2,984 joules

If you accomplished that feat in 1 second,
then you produced power of

                               (2,984 / 1) (joule/second) = 2,984 watts . 

                             (2,984 watt) x (1 HP / 746 watt) = 4 horsepower .

That's the solution, applying bullet-proof math and physics to the
given data.  But in the real world, I guarantee that you didn't do that.
______________________________________

By the way ... a comment regarding the terminology in the question:

The box doesn't "have a force" of 1,492 newtons.  That's the force
with which you ... or a horse, or an ox ... pushed against the box
in order to move it.

(And, if I might observe, that force is about 336 pounds,
so my money would be on the horse or the ox.)
5 0
3 years ago
An airplane of mass 12,000 kg flies level to the ground at an altitude of 10.0 km with a constant speed of 175 m/s relative to t
motikmotik

Answer:

Explanation:

mass of airplane, m = 12000 kg

altitude, h = 10 km = 10,000 m

velocity, v = 175 m/s

(a) Angular momentum

L = m x v x h x Sin 90

L = 12000 x 10,000 x 175

L = 2.1 x 10^10 kg m^2/s

(b) As there is no external torque, so the angular momentum remains constant.

3 0
3 years ago
SO4 +NaOH ➡ Na2SO4+H20​
AlexFokin [52]

Answer:

2NaOH+H2SO4 Na2SO4+H2O the equation is balanced/unbalanced because the number of hydrogen atoms and oxygen/sodium is equal/not equal in the reactants and in the products.

Explanation:

6 0
3 years ago
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