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Arturiano [62]
3 years ago
10

Why do all objects hit with the same velocity (ignoring air resistance) if dropped from the same height?

Physics
2 answers:
dlinn [17]3 years ago
7 0

the answer to this question  is A because If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. ... In air, a feather and a ball do not fall at the same rate.

Len [333]3 years ago
7 0

Answer: C)Acceleration due to gravity affects all bodies the same since it depends primarily on the gravity of the planet, not on the object being dropped.

       

Explanation:

Using equation of motion,

v^{2}=u^{2}+2gh

where v= final velocity , u= initial velocity , h= height from where object is dropped ,acceleration due to gravity , g=\frac{GM}{R^{2}}

G= universal gravitational constant, M=mass of planet , R= radius of planet

Therefore g depends on mass and radius of planet .

=>If all objects are dropped from same height with zero initial speed the final speed depends only on acceleration due to gravity which is a property of planet taken into consideration and does not depend on the object.

For example if a piece of paper and a heavy stone are dropped from the same height with zero initial speed then both objects will have same final speed .

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Answer:

When you blow into a tuba the air vibrates very slowly.​

Explanation:

Tuba is a buzz instrument ie sound is produced in it with the help of lip vibration . It is the lowest pitched musical instrument in the brass family .

Due to absence of resonance in it , it produces music of lowest pitch , So when one blows into it the air column of the instrument vibrates very slowly producing low pitched sound.

8 0
3 years ago
If i click on a mouse does that show energy transfer?
Radda [10]

Answer:

Yes

Explanation:

You are using energy to click the mouse, and the energy moves from your fingers to the mouse clicker.

8 0
3 years ago
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Sam is pulling a box up to the second story of his apartment via a string. The box weighs 53.3 kg and starts from rest on the gr
castortr0y [4]

Answer:

W = 1222.4 J = 1.22 KJ

Explanation:

The work done on an object is the product of the force applied on it and the displacement it covers as a result of this force. It must be noted that the component of displacement in the direction of force should only be used. Hence, the work can be calculated as:

W = F d Cosθ

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W = Work Done = ?

F = Force Applied = 64 N

d = Distance Covered by Box = 19.1 m

θ = Angle between force and displacement = 0°

Therefore,

W = (64 N)(19.1 m)Cos 0°

<u>W = 1222.4 J = 1.22 KJ</u>

7 0
3 years ago
In one year, a large tree can remove from the air the same amount of carbon dioxide produced by a car travelling 500 miles. If N
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4 years ago
these are the types of attractions found between molecules. their strength determines the state of the substance at room tempera
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<h2>Answer</h2>

The physical state of the elements depends upon the <u>attraction forces </u>and their <u>kinetic energy</u>.

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The elements or substances are fixed with each other with the help of different chemical forces including ionic bonding, covalent bonding, H- bonding etc. The strength of these forces is also one of the factors that affect their physical natures. For example, covalent or ionic bonds are the strongest bonds than all other bonds and metals that contain these forces are mostly in solid form. The kinetic motion of electrons in the element also affects the physical state of the element and potential of bonding.

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3 years ago
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