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4 years ago

The study of motion is called

Physics

2 answers:

Ira Lisetskai [31]4 years ago

5 0

kinematics is the answer

melamori03 [73]4 years ago

3 0

Kinematics is the name of the study of motion.

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A satellite orbiting the moon very near the surface has a period of110 min. What is free-fall acceleration on the surface of the

Norma-Jean [14]

Answer:

1.54 m/s²

Explanation:

The free-fall acceleration is calculated as

g = w²r

Where w is the angular velocity of the satellite and r is the radius of the moon.

The angular velocity can be calculated as

$w=\frac{2\pi}{T}$

Where T is the period, so

T = 110 min = 110 x 60 s = 6600 s

Then,

$w=\frac{2\pi}{6600\text{ s}}=9.52\times10^{-4}\text{ rad/s}$

Finally, the radius of the moon is r = 1.7 x 10⁶ m, so the free-fall acceleration is

$\begin{gathered} g=w^2r \\ g=(9.52\times10^{-4})^2(1.7\times10^6) \\ g=1.54\text{ m/s}^2 \end{gathered}$

Therefore, the answer is 1.54 m/s²

5 0

2 years ago

Near the center of our galaxy, hydrogen gas is moving directly away from us in its orbit about a black hole. The electromagnetic

Aleonysh [2.5K]

Answer:

The speed of the gas relative to the earth = 6.314 * $10^{6} m/s$

Explanation:

Let the observed wavelength be $\lambda_{0} = 1915 nm$

The wavelength of the source, $\lambda_{s} = 1875 nm$

Let the speed of the gas relative to the earth be = v

The observed wavelength in relation to the source wavelength, according to doppler shift in relativity can be expressed as:

$\lambda_{0} = \lambda_{s}\sqrt{\frac{1-\frac{v}{c} }{1+\frac{v}{c} } }$

Where the speed of light, c = 3 * 10⁸m/s

$\frac{\lambda_{0}}{\lambda_{s}} = \sqrt{\frac{1-\frac{v}{c} }{1+\frac{v}{c} } }\\(\frac{\lambda_{0}}{\lambda_{s}})^{2} = \frac{1-\frac{v}{c} }{1+\frac{v}{c} }\\(\frac{1915}{1875}) ^{2}( {1+\frac{v}{c}) = ({1-\frac{v}{c} }) \\$

$1.043 +\frac{1.043v}{c} = 1 - \frac{v}{c} \\\frac{1.043v}{c} + \frac{v}{c} = 1-1.043\\2.043v = -0.043c\\v = \frac{-0.043c}{2.043} \\v = -0.02105c\\v = -0.02105 * 3 * 10^{8} \\v = -6314243.76 m/s\\The absolute value, v = 6314243.76 m/s\\v = 6.314 * 10^{6} m/s$

8 0

3 years ago

Three 7-ohm resistors are connected in parallel with an ideal 12-volt battery. What is the equivalent resistance of the circuit?

Alika [10]

Answer:

Equivalent Resistance of Resistors in Parallel is

1/R = 1/r1 + 1/r2 .....

1/R = 1/7 + 1/7 + 1/7

R= 7/3

R=2.33ohms

7 0

3 years ago

How far (in meters) will you travel in 3 minutes running at a rate of m/s?

Daniel [21]

10 minutes I don’t know id this is right

3 0

3 years ago

Read 2 more answers

What is population inversion and what is laser inversion?

hoa [83]

Answer:

Population inversion, in physics, the redistribution of atomic energy levels that takes place in a system so that laser action can occur. Although absorption and emission of energy is a continuous process, the statistical distribution (population) of atoms in the various energy states is constant. ...

laser inversion is photon that can stimulate the production of other photons of exactly the same wavelength because of stimulated emission of radiation.

Explanation:

5 0

3 years ago