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bagirrra123 [75]
3 years ago
15

what are geology,astronomy,and physics is the answer hypothesis,scientific inquiries,scientific discplines,or protocols?

Physics
1 answer:
vesna_86 [32]3 years ago
3 0
Geology, astronomy, and physics are scientific inquiries
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Explain what causes something to be a magnet
Luden [163]
Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. Each atom has electrons, particles that carry electric charges.
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The mass of a star is 1.210×1031 kg and it performs one rotation in 20.30 days. Find its new period (in days) if the diameter su
balandron [24]

The new period will be 2.486 days.

<h3>What is the period?</h3>

The period is found as the ratio of the angular displacement and the angular velocity. Its unit is the second and is denoted by t. The value of time needed to complete the rotation is the total period.

Given data;

Mass of a star,m= 1.210×10³¹ kg

The time period for one rotation of the star, T = 20.30 days

D' = 0.350 D

R' = 0.350 R

From the law of conservation of angular momentum;

\rm  I \omega = I' \omega' \\\\ \frac{2}{5} MR^2 \times \frac{2 \pi }{T}=\frac{2}{5} MR'^2 \\\\ R^2 \times \frac{1}{T}= R'^2  \times \frac{1}{T} \\\\ T' = \frac{R'^2T}{R^2}  \\\\ T' = \frac{(0.350 R)^2 \times 26.1 }{R^2} \\\\T' = 0.1225 \times 20.30 \\\\ T'= 2.486 \ days

Hence, the new period will be 2.486 days.

To learn more about the period, refer to the link;

brainly.com/question/569003

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8 0
2 years ago
What causes a nucleus to become radioactive?
timurjin [86]

Answer:

Answer the strong nuclear force attracts and binds protons and makes the nucleus unstable

Explanation:

4 0
3 years ago
An object falls 210 m in 6.3 s. What was it's initial velocity? Express your answer with the correct number of significant digit
KIM [24]

Answer:

u = 2.5 \ m/s

Explanation:

Given data:

Height, h = 210 \ m

Time, t = 6.3 \ s

Let the initial velocity of the object be <em>u</em>.

From the kinematic equation,

h = ut + \frac{1}{2}gt^{2}

210 = u \times 6.3 + 0.5 \times 9.80 \times (6.3)^{2}

\Rightarrow \ u = 2.46 \ m/s

u = 2.5 \ m/s (rounding to tenth place)

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4 years ago
Describe the relationship between the potential energy and kinetic energy of an object and the amount of Kinetic energy it can g
ankoles [38]

Kinetic energy of an object is the energy it contains due to movement. If an object is at rest, it doesn't have kinetic energy. If it's moving, then it has kinetic energy. It's pretty simple! The amount of kinetic energy of an object is dependent upon two variables, one being the mass of the object

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3 years ago
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