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3 years ago

The planet Venus, our moon, and Halley's Comet all

Physics

2 answers:

olganol [36]3 years ago

3 0

D is your answer <span>have highly predictable orbits around the sun. </span>

lapo4ka [179]3 years ago

3 0

Answer: The correct answer is Option D.

Explanation:

Venus is the second planet of our solar system and is similar in size as compared to Earth. It's atmosphere is mainly composed of carbon dioxide with minor amounts of nitrogen. This planet have a fixed orbital time around the sun which is 225 days.

Moon is the natural satellite of Earth and is smaller than Earth. It is composed of mainly oxygen, silicon, magnesium, iron, calcium, and aluminum. The orbital period of moon around Sun is 29.5 days.

Halley's Comet is a comet which is very small as compared to Earth and is composed of water, carbon monoxide, carbon dioxide and other ices. It appears in every 75-76 years.

Hence, all of the above have highly predictable orbits around the Sun. Therefore, the correct answer is Option D.

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A car slows down uniformly from a speed of 22 m/s to rest in 4.0 seconds. How far did it travel in that time

krek1111 [17]

Answer:

$\boxed{\sf Distance \ travelled = 44 \ m}$

Given:

Initial speed (u) = 22 m/s

Final speed (v) = 0 m/s (Rest)

Time taken (t) = 4 seconds

To Find:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

$\boxed{ \bold{s = (\frac{v + u}{2} )t}}$

By substituting value of v, u & t in the equation we get:

$\sf \implies s = ( \frac{0 + 22}{2} ) \times 4 \\ \\ \sf \implies s = \frac{22}{2} \times 4 \\ \\ \sf \implies s = 11 \times 4 \\ \\ \sf \implies s = 44 \: m$

$\therefore$

Distance travelled by car (s) = 44 m

4 0

4 years ago

How much will stretch a spring that has spring constant of 735 N/m, if you vertically hung a 2. 30 kg object from it. How much w

otez555 [7]

Answer:

Part 1 = 0.03m, Part 2 = 1.4651J

4 0

3 years ago

Read 2 more answers

Which receptors are responsible for the production of saliva (A) auditory receptors (B) optic receptors (C) skin receptors (D) t

Fudgin [204]

Answer:

$\large \boxed{\sf D. \ taste \ receptors}$

Explanation:

When activated, the receptor most likely prompting the production of saliva is the taste receptor. When food enters the mouth, the salivary glands produce the saliva upon the sensation of taste.

8 0

3 years ago

A resistor, inductor, and a battery are arranged in a circuit. The circuit has an inductance of L = 1 H and a resistance of 1.4

shtirl [24]

Answer:

$\tau \approx 7.14 \times 10^{-4}s \approx0.714ms$

Explanation:

In a LC circuit The time constant τ is the time necessary for 60% of the total current (maximum current), pass through the inductor after a direct voltage source has been connected to it. The time constant can be calculated as follows:

$\tau =\frac{L}{R}$

Therefore, the time needed for the current to reach a fraction f = 0.6(60%) of its maximum value is:

$\tau =\frac{1}{1.4\times 10^{3}} =7.142857143 \times 10^{-4} \approx7.14 \times 10^{-4}s$

8 0

4 years ago

How will you describe the motion of an object in a balanced and unbalanced<br>state? ASAP

gogolik [260]

Answer:

Objects move according to their net force, or the total amount of force acting on them. Balanced forces are just that, balanced. An object with balanced forces will not move because the opposing forces will cancel each other out. However, if there are unbalanced forces, the object will move in accordance with the force that is greater. When moving though, there is always friction. Whether you be underwater, on the ground, or in the air there is always friction on the Earth. (Besides vacuums, of course.)

Force is equal to mass x acceleration.

With that you can find the forces of the object if you know its mass and acceleration.

Explanation:

The motion of an object can be described in many ways, including path, speed, velocity, and acceleration.

6 0

4 years ago

Read 2 more answers