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3 years ago

WHAT STRENGTH IS RESPONSIBLE FOR THE TRAINING OF STARS AND PLANETS

1 answer:

4 0

The more massive a planet or star is, the stronger the gravitational force it exerts. It is this force that allows a planet or star to hold other objects in their orbit. This is summed up in Isaac Newton's Universal Law of Gravitation, which is an equation for calculating the force of gravity. Newton's Universal Law of Gravitation is a formula for understanding the relationship of gravity between two objects. The equation is "F = G(M1)(M2)/R," where "F" is the force of gravity, "G" is the gravitational constant, the "M"s are the masses of the objects being considered, and "R" is the radius of the distance between the two objects. Thus, the more massive either object is, and the closer they are together, the stronger the force of gravity.

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what is the wavelength of radio waves transmitted by an FM station at 90MHz where 1M=10^6, and speed of radiowave is 3*10^8m/s

Igoryamba

Answer:

λ = 3.33 m

Explanation:

Given:

Frequency = f = 9 × 10⁷ Hz

Speed = v = 3 × 10⁸ m/s

Required:

Wavelength = λ = ?

Formula:

v = fλ

Solution:

Putting the givens in the formula

v = fλ

λ = $\frac{v}{f}$

λ = $\frac{3*10^8}{9*10^7}$

λ = 0.33 × 10¹

λ = 3.33 m

5 0

3 years ago

A student climbs to the top of the gym and drops a baseball to the ground below. A physics student standing nearby has a motion

sladkih [1.3K]

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground ( $t$ ), measured in seconds, which is determined by the following kinematic formula:

$t = \frac{v-v_{o}}{g}$ (1)

Where:

$v_{o}$ , $v$ - Initial and final speeds of the baseball, measured in meters per second.

$g$ - Gravitational acceleration, measured in meters per square second.

If we know that $v_{o} = 0\,\frac{m}{s}$ , $v = 17\,\frac{m}{s}$ and $g = 9.807\,\frac{m}{s^{2}}$ , then the time spent by the baseball is:

$t = \frac{17\,\frac{m}{s}-0\,\frac{m}{s} }{9.807\,\frac{m}{s^{2}} }$

$t = 1.733\,s$

The baseball was falling during 1.733 seconds.

6 0

3 years ago

Two objects of mass m move in opposite directions toward each other. The green object moves at velocity v, and the blue object m

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4 years ago

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What is the average reaction time of people

Yanka [14]

Answer:

the average reaction time is 0.25 seconds.

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3 years ago

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The magnetic field at the centre of a toroid is 2.2-mT. If the toroid carries a current of 9.6 A and has 6.000 turns, what is th

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