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Aleonysh [2.5K]
3 years ago
15

Non examples of gravity ?

Physics
2 answers:
Gelneren [198K]3 years ago
5 0

Answer:

(1) Flying of kite (2) Helium balloon floating (3) Floating of the object on water.

Explanation:

The force of gravity is defined as the attractive force which is applied by the earth's gravitational force towards the center of the Earth.

Now we have to focus on the non-examples of gravity, these are those examples that overcome the effect of gravity. These examples are discussed below:

(1) Flying of the kite in the sky because of the pushing of the wind in the upward direction.

(2) The balloon which is filled by the Helium is floating in the upward direction.

(3) Floating of the object on the surface of water.

Afina-wow [57]3 years ago
3 0
Floating. When you have no gravity you have nothing to be pushing you down to the floor so that would be an example of no gravity pushing on you.
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Starting from rest, a dragster travels a straight 1/4 mi racetrack in 6.70 s with constant acceleration. What is its velocity wh
Airida [17]
<h2>Its velocity when it crosses the finish line is 119.40 m/s</h2>

Explanation:

We have equation of motion s = ut + 0.5 at²

        Initial velocity, u = 0 m/s

        Acceleration, a = ?

        Time, t = 6.70 s      

        Displacement, s = 1/4 mi = 0.25 mi = 400 m

     Substituting

                      s = ut + 0.5 at²

                      400 = 0 x 6.70 + 0.5 x a x 6.70²

                      a = 17.82 m/s²

     Now we have equation of motion v = u + at

     Initial velocity, u = 0 m/s

     Final velocity, v = ?

     Time, t = 6.7 s

     Acceleration, a = 17.82 m/s²

     Substituting

                      v = u + at  

                      v = 0 + 17.82 x 6.7

                      v = 119.40 m/s

Its velocity when it crosses the finish line is 119.40 m/s

6 0
3 years ago
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.00 s, it rotates 13.9 rad. Du
alisha [4.7K]

Answer:

(a) Angular acceleration is 1.112 rad/s².

(b) Average angular velocity is 2.78 rad/s .

Explanation:

The equation of motion in Rotational kinematics is:

θ = θ₀ + 0.5αt²

Here θ is angular displacement at time t, θ₀ is angular displacement at time t=0, t is time and α is constant angular acceleration.

(a) According to the problem, θ is 13.9 rad, θ₀ is zero as it is at rest and t is 5 s. Put these values in the above equation:

13.9 = 0 + 0.5α(5)²

α = 1.112 rad/s²

(b) The equation of average angular velocity is:

ω = Δθ/Δt

ω = \frac{13.9}{5}

ω = 2.78 rad/s

3 0
4 years ago
What is the oxidation number of the element Se
maria [59]

Answer:

The oxidation number of a monatomic (composed of one atom) ion is the same as the charge of the ion. For example, the oxidation numbers of K+, Se2−, and Au3+ are +1, -2, and +3, respectively. The oxidation number of oxygen in most compounds is −2.

Explanation:

6 0
3 years ago
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the pla
Vladimir [108]

Answer

given,

Radius of sphere = 6.38 × 10⁶ m

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\omega = \dfrac{2\pi}{ 86400 }

\omega = 7.272 \times 10^{-5}\ rad/s

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v = R_E \omega

v = 6.38 \times 10^6\times 7.272 \times 10^{-5}

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a = \omega^2R_E

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a = 0.03374 m/s^2

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R = R_E cos \theta

R = 6.38 \times 10^6\times cos 61^0

R = 3.093 \times 10^6 m

v = R \omega

v = 3.093 \times 10^6 \times 7.272 \times 10^{-5}

v = 225 m/s

acceleration of the person

a = \omega^2R_E

a = (7.272 \times 10^{-5})^2(3.093 \times 10^6 )

a = 0.01635 m/s^2

4 0
3 years ago
Movement of a stationary object
castortr0y [4]
That is a paradox b/c stationary means not moving

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