Two things are needed to complerely describe a force: its strength and its direction. An arrow indicates both.
Answer:
it be the second one lad
Explanation:
i have done the playing pf the basketball
The minimum value of the coefficient of static friction between the block and the slope is 0.53.
<h3>Minimum coefficient of static friction</h3>
Apply Newton's second law of motion;
F - μFs = 0
μFs = F
where;
- μ is coefficient of static friction
- Fs is frictional force
- F is applied force
μ = F/Fs
μ = F/(mgcosθ)
μ = (250)/(50 x 9.8 x cos15)
μ = 0.53
Thus, the minimum value of the coefficient of static friction between the block and the slope is 0.53.
Learn more about coefficient of friction here: brainly.com/question/20241845
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Answer:
I do apologize but I can't figure out Q 2 , 3 but
Q 1 is 1
Q4 is 0.0125%
so sorry
Answer:
Earth's magnetic field deviates high energy particles (e.g cosmic rays) that are a risk for human health.
Explanation:
Cosmic rays are high energy charged particles (88% protons, 10% nuclei of helium, 1% heavier nuclei) that came from the outer space. The energies of these particles are in the range of 1 GeV to 10⁸ TeV. Since they are charged particles, they will be deviated by Earth’s magnetic field¹ (as a reminder: A magnetic field applies a magnetic force over a moving charged particle).
Earth’s magnetic field works as a shield to humans against high energy charged particles, if cosmic rays were in touch with a human body, it can break molecules that forms DNA structure². Modifying that structure can lead to diseases as cancer, for example.
Units:
GeV: Giga-electronvolt
TeV: Tera-electronvolt
¹Magnetic field: It is generated around the space of a moving charged particle.
²DNA structure: It is a compound of different molecules that provides information to cells functionality.
