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victus00 [196]
3 years ago
7

What do we mean when we say that motion is relative

Physics
2 answers:
natta225 [31]3 years ago
8 0
Suppose a bug is sitting on a plane. To someone right next to the bug, the bug appears to not move, but a man from the ground would see the bug going as fast as the plane. It is relative, meaning it appears different to two different people.
postnew [5]3 years ago
4 0
It means that all motion is "compared to ..." something.

-- When you're reading a book on an airplane, the book is not moving
compared to you, but it's moving at more than 400 mph compared to
someone on the ground.

-- When you're riding in a car, the driver isn't moving compared to
you, but he's moving at 30 or 40 mph compared to a person standing
on the curb.

You might ask: "But how fast is the book REALLY moving ?  How fast
is the driver REALLY moving ?"

The answer is:  There's no such thing as "really" moving.  ALL motion
is relative to (compared to) something.

If you want to touch off an explosion and watch somebody's face turn
red, green, and blue ... some rainy afternoon when there's not a lot
going on ... tell this to somebody who believes the Earth is flat and
is willing to fight to keep believing it.
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Explain how the information from the stimuli is communicated to the brain.
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Answer:

Answer:Neurons communicate through an electrochemical process. Sensory receptors interact with stimuli such as light, sound, temperature, and pain which is transformed into a code that is carried to the brain by a chain of neurons. Then systems of neurons in the brain interpret this information.

Answer:Neurons communicate through an electrochemical process. Sensory receptors interact with stimuli such as light, sound, temperature, and pain which is transformed into a code that is carried to the brain by a chain of neurons. Then systems of neurons in the brain interpret this information.Explanation:

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6 0
3 years ago
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Aleks [24]

Answer:

Probably competition with television news-

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2 years ago
William Tell shoots an apple from his son's head. The speed of the 102-g arrow just before it strikes the apple is 26.7 m/s, and
xxMikexx [17]

To develop the problem, we require the values concerning the conservation of momentum, specifically as given for collisions.

By definition the conservation of momentum tells us that,m_1V_1+m_2V_2 = (m1+m2)V_f

To find the speed at which the arrow impacts the apple we turn to the equation of time, in which,

t= \sqrt{\frac{2h}{g}}

The linear velocity of an object is given by

V=\frac{X}{t}

Replacing the equation of time we have to,

V_f = \frac{X}{t}\\V_f =\frac{X}{\sqrt{\frac{2h}{g}}}\\V_f = \frac{6.9}{\sqrt{\frac{2(1.85)}{9.8}}}\\V_f = 11.23m/s

Velocity two is neglected since there is no velocity of said target before the collision, thus,

m_1V_1 = (m1+m2)V_f

Clearing for m_2

m_2 = \frac{m_1V_1}{V_f}-m_1\\m_2 = \frac{(0.102)(26.7)}{11.23}-0.102\\m_2 = 0.1405KG= 140.5g

8 0
3 years ago
A model hydroelectric power station produces just enough electric power to light a 6.0 W lamp. The model is found to be 80% effi
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You said that the useful output power from the model is 6 watts.  You also said that the model is 80% efficient.  We have no reason to doubt your word, so we know that

(useful output) / (input power) = 80% or 0.8

(6 watts) / (input power) = 0.8

Multiply each side by (input power): 6 watts = (0.8) (input power)

Divide each side by 0.8 :  Input power = (6 watts/ 0.8)

<em>Input power =  7.5 watts</em>

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