Give u = start velocity
v = end velocity
v = u + at
50 = 400 + a*30
30a = -350
a = -116.67 m/
**Why the accecleration is negative number**
Because displacement, velocity, and acceleration are VECTOR QUANTITIES.
Vector Quantity must have direction.
Transverse wave = at right angles to the direction of the motion of the wave
in transverse wave medium particles will move perpendicular to the direction of motion of medium particles
they all are perpendicular to wave always
Longitudinal wave = back and forth in the direction of the motion of the wave
in longitudinal waves medium particles will move in the direction of wave and the motion is always in back and forth type
electromagnetic wave = alternating waves moving at right angles to each other
electromagnetic waves are combination of electric field and magnetic field which oscillates perpendicular to wave as well as they are perpendicular to each other
Answer:
Solar Energy. The primary source of energy is the sun.
Wind Energy. Wind power is becoming more and more common.
Geothermal Energy.
Hydrogen Energy
Tidal Energy.
Wave Energy.
Hydroelectric Energy.
Biomass Energy.
Explanation:
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.)
<span>a crack across rock layers caused by moving plates
molten rock - fault (a fault is a rupture or scission in a block of rocks that allows both parts from the scission to slide over each other)
</span><span>horizontal intrusion - sill (a sill is a mass of igneous rock that intruded horizontally and laterally through rock layers already existent)
</span><span>vertical intrusion - d(y)ke (a d(y)ke is also a mass of igneous rock, but this time that intruded vertically across rock layers, many times through an already existing crack)
</span><span>natural, upward movement of rock layers - uplift (uplift is a geological process in which a portion of the Earth's crust is elevated from its original position due to plate tectonics)</span>