3 years ago

Choose all that apply about the earths crust

Physics

2 answers:

rodikova [14]3 years ago

8 0

Your answer for the question is B c e

Nastasia [14]3 years ago

3 0

1, 3, 6 is the answer

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igomit [66]

Answer:

option D

Explanation:

given,

coefficient of friction between wall and tire = µ

speed of motorcycle = s

friction force = f = μ N

where normal force will be equal to centripetal force

$N = \dfrac{mv^2}{r}$

for motorcycle to not to slip weight should equal to the centripetal force

now,

$m g =\mu \dfrac{mv^2}{r}$

$\mu =\dfrac{rg}{s^2}$

where "rg" is constant

$\mu\ \alpha \ \dfrac{1}{s^2}$

$\mu\ \alpha \ s^{-2}$

Hence, the correct answer is option D

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3 years ago

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kirill115 [55]

Answer:

That would be Spring C

Explanation:

i took the test :P

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4 years ago

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Answer:

3.69 m/s

Explanation:

Forces :

mgsin Θ - mumgcosΘ = ma

g x sinΘ - mu x g x cosΘ = a

9.8 x sin 21 - 0.53 x 9.8 x cos 21 = a

a = -1.337 m/s²

so you have final velocity = 0 m/s

initial velocity = ? m/s

Given d = 5.1 m

By kinematics

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vo = 3.69 m/s

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4 years ago

Floating piece of wood - buoyancy question.?

sashaice [31]

No. because the weight is the same. no m9re water displacement

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Answer:

0.00583 seconds

Explanation:

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3 years ago