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3 years ago

Question :⇒Define Force

Physics

2 answers:

Anika [276]3 years ago

8 0

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.

Explanation:

I hope it's help u :)

andreev551 [17]3 years ago

7 0

In physics, a force is any interaction that, when unopposed, will change the motion of an object.

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Which organs are used in reproduction?

Anestetic [448]

Answer:

d. ovaries, uterus, and Fallopian tubes

Explanation:

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3 years ago

mario62 [17]

Answer:

An increase in air temperature because of its compression.

Explanation:

The Gay-Lussac's Law states that a gas pressure is directly proportional to its temperature in an enclosed system to constant volume.

$P = kT$

<em>where P: is the gas pressure, T: is the gas temperature and k: is a constant.</em>

Therefore, due to Gay-Lussac's Law, when the plunger is pushed down very rapidly, the pressure of the air increase, which leads to its temperature increase. That is why cotton flashes and burns.

I hope it helps you!

3 0

3 years ago

If an object is thrown upward with an initial velocity of 128 ft/second, then its height after t seconds is given by the follow

IrinaK [193]

Answer:

The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.

Explanation:

Given that,

Initial velocity u= 128 ft/sec

Equation of height

$h = 128t-32t^2$ ....(I)

(a). We need to calculate the maximum height

Firstly we need to calculate the time

$\dfrac{dh}{dt}=0$

From equation (I)

$\dfrac{dh}{dt}=128-64t$

$128-64t=0$

$t=\dfrac{128}{64}$

$t=2\ sec$

Now, for maximum height

Put the value of t in equation (I)

$h =128\times2-32\times4$

$h=128\ ft$

(b). The number of seconds it takes the object to hit the ground.

We know that, when the object reaches ground the height becomes zero

$128t-32t^2=0$

$t(128-32t)=0$

$128=32t$

$t=4\ sec$

Hence, The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.

3 0

3 years ago

A light wave is traveling through the air and then enter water. How will the light change?

Bogdan [553]

Answer:

A) It will move at a different speed (i.e slower)

B) A vacuum

Explanation:

For A), Light moves at a different speed as it starts to interact more with the particles in said medium (in this case, water) than the earlier medium.

For B), Light propagates using its own particle, i.e the photon whereas sound is more of a transmission of energy from the particles it originates from. In a vacuum, there are no particles to transfer energy to, that is why light can travel in a vacuum and sound cannot

8 0

3 years ago

10. If the gravitational force between two objects of equal mass is found to be 4.60*10^-6 N when the objects are 15 meters apar

liraira [26]

Answer:

Explanation:

F = G*m1 * m2 / r^2

G = 6.67408 × 10-11 m3 kg-1 s-2

r = 15 m

F = 4.60 * 10^-6 N

m1 = m2 = m

F = 6.67 * 10^-11 * m^2 / 15^2

4.60 * 10^-6 = 6.67 * 10^-11 * m^2 / 225 Multiply both sides by 225

4.60*10^-6 * 225 = 6.67*10^-11 * m^2

.001035 = 6.67408 × 10-11 * m^2 Divide by 6.67408 × 10-11

0.001035/ 6.67408 × 10-11 = m^2

m^2 = 15507755 Take the square root of both sides

m = sqrt(15507755 )

m = 3938 kg

5 0

3 years ago

Question :⇒Define Force​

Question :⇒Define Force