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3 years ago

-Gravity is affected by the:

Physics

2 answers:

svetlana [45]3 years ago

7 0

Gravity is affected by the mass of the objects and the distance between two objects. f= G(m1*m2)/d^2

algol133 years ago

5 0

Answer:

Gravity is affected by the mass of the objects and the distance between two objects.

Explanation:

Gravity is an attracting force that two or more masses exert on each other. Gravity is one of the four forces of nature. This force is very small at the atomic level compared to the other forces, but is the most common at macroscopic distances: a force acting on each object, in the direction of the center of gravity and proportional to the mass of the object.

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A 5,000 kg satellite is orbiting the Earth in a circular path. The height of the satellite above the surface of the Earth is 800

Arada [10]

Explanation:

The given data is as follows.

m = 5000 kg, h = 800 km = $0.8 \times 10^{6} m$

$R_{e} = 6.37 \times 10^{6} m$ , r = R + h = $7.17 \times 10^{6} m$

$M_{e} = 5.98 \times 10^{24}$ kg, G = $6.67 \times 10^{-11} Nm^{2}/kg^{2}$

As we know that,

$\frac{mv^{2}}{r} = \frac{GmM_{e}}{r^{2}}$

v = $\sqrt{\frac{GM_{e}}{r^{2}}}$

And, it is known that formula to calculate angular velocity is as follows.

$\omega = \frac{v}{r} = \sqrt{\frac{GM_{e}}{r^{3}}}$

v = $\sqrt{\frac{GM_{e}}{r^{3}}}$

= $\sqrt{\frac{6.67 \times 10^{-11} Nm^{2}/kg^{2} \times 5.98 \times 10^{-24} kg^{-2}}{(7.17 \times 10^{6} m)^{3}}}$

= $1.0402 \times 10^{-3} rad/s$

Thus, we can conclude that speed of the satellite is $1.0402 \times 10^{-3} rad/s$ .

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3 years ago

Pre-questioning identifies a purpose for reading.

nadya68 [22]

Answer:

True

Explanation:

Pre-questioning may help a reader focus on information s/he hopes to find in the reading selection.

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What is the formula for instant velocity when I have time and distance?

Tomtit [17]

Answer:

v(t)= (d/dt)x(t)

Explanation:

The instantaneous velocity of an object is the limit of the average velocity as the elapsed time approaches zero, or the derivative of x with respect to t. Like average velocity, instantaneous velocity is a vector with dimension of length per time. The instantaneous velocity at a specific time point t 0 is the rate of change of the position function, which is the slope of the position function

x ( t ) at t 0 .

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Imagine a 10kg block moving with a speed of 20m/s. calculate the kinetic energy of this block

avanturin [10]

$E_{c}=\frac{mv^2}{2}=2000J$

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Which of the following is a common feature among the four inner planets?

denpristay [2]

<span>rocky surface

(outer plants are made of gas)</span>

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