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3 years ago

What is one example of a scientific model?

Physics

2 answers:

ziro4ka [17]3 years ago

8 0

Answer:

A scientific model represents objects, phenomena, and physical processes in a consistent and logical way.

Allisa [31]3 years ago

4 0

Answer:

Models that clarify climate wonders can be utilized to anticipate climate.

Explanation:

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The vectors of the magnetic field around a long, straight, current-carrying wire are:

pochemuha

Answer:

concentric with the wire

Explanation:

the magnetic field around a long straight, current carrying wire form concentric circles around the wire.

7 0

3 years ago

To withstand ‘g-forces’ of up to 10 g’s, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a ‘human ce

Marina86 [1]

Answer:

34.292 m/s

Explanation:

When plane dives the gravitational acceleration becomes 10 times extra i-e

acceleration a = g= 10g's=10 ×9.8= 98 m/sec2

radius of dive circle = 12 m

v= speed= ?

Using

$a= \frac{v^{2} }{r}$

==> $v^{2}$ = a × r = 98 × 12 = 1176 $(\frac{m}{s}) ^{2}$

==> v= $\sqrt{1176(\frac{m}{s} )^{2} }$

==> v= 34.292 m/s

4 0

3 years ago

An object is dropped from an airplane and takes 72 seconds to hit the ground. What is the magnitude of its VF Y ?

Dafna1 [17]

The final vertical velocity of the object is 705.6 m

Explanation:

Here we have to analyze the vertical motion of the object, which is a free fall motion, with constant acceleration of

$g=9.8 m/s^2$

towards the ground due to gravity.

Therefore, we can use the following suvat equation:

$v=u+at$

where

v is the final vertical velocity

u is the initial vertical velocity

$a=g$ is the acceleration

t is the time

Since the object is dropped,

u = 0

Therefore, the magnitude of the vertical velocity of the object after t = 72 seconds is:

$v=0+(9.8)(72)=705.6 m/s$

Learn more about free fall:

brainly.com/question/1748290

brainly.com/question/11042118

brainly.com/question/2455974

brainly.com/question/2607086

#LearnwithBrainly

3 0

3 years ago

You drop an egg from rest with no air resistance. Which of the following statements is correct? Group of answer choices As it fa

enyata [817]

Answer:

As it falls, its mechanical energy is conserved, but its momentum is not conserved.

Explanation:

The mechanical energy of the egg during the fall is the sum of its potential energy and its kinetic energy:

E = U + K

As we know, mechanical energy is always conserved when there are only conservative forces acting on a system. In this case, the only force acting on the egg is the force of gravity, which is a conservative force (we are neglecting air resistance), therefore mechanical energy is conserved.

In particular, as the egg falls down, its gravitational potential energy U decreases, while its kinetic energy K increases (since its speed increases), but the sum of the two quantities, E, remains constant.

On the contrary, momentum is not conserved. In fact, momentum is given by

p = mv

where m is the mass and v is the velocity. Since the velocity of the egg increases (in magnitude) while it falls down, it means that momentum is not constant, so it is not conserved.

Why? The reason is the following: momentum is only conserved when the net external force acting on the system is zero. This is not the case: in fact, there is a net external force acting on the egg (the force of gravity), so the momentum cannot be conserved.

3 0

3 years ago

What happens when an electron returns to its ground state from its excited state

Norma-Jean [14]

Answer: Energy is released by the electron in the form of light

Explanation:

Let's start by explaining that each atom in its natural state has a specific structure of its energy levels. Where the lowest energy level is called the ground state.

So, when an atom is in its ground state, its electrons fill the lower energy orbitals completely before they begin to occupy higher energy orbitals.

Then, when an atom is excited, it means that it has left its ground state (in which each electron occupies its place in its orbit, around the nucleus), when this happens some electron jumps out of the orbit it occupied in its fundamental state to an outer orbit, further away from the nucleus and then return to the ground state, emitting in the form of light the energy received.

To understand it better:

An excited electron is an unstable electron, and when passing from one orbit to another, it produces light of a specific wavelength (color) that depends on the amount of energy the electron loses.

5 0

4 years ago