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3 years ago

What's the difference between (mu k) and (mu s)

Physics

1 answer:

Stolb23 [73]3 years ago

7 0

(mu s) is the coefficient of kinetic friction, (mu k) is a normal force,

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Mary slams her breaks and the coffee cup sitting in the dashboard spill everywhere, what Newton law of motion explains why the c

Dimas [21]

Answer:

inertia

Explanation:

a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.

aka

it goes on because nothing is resisting it, in this case however, the car is there to stop it, and the result is spilled coffee (rip)

3 0

3 years ago

Can someone please answer this, ill give you brainliest Would be very appreciated.

RoseWind [281]

Answer:

Option 3

Explanation:

As the roots of the plant hold soil in place, it helps prevent soil erosion.

The other options are true, but they are not correct explanations as to why plants help prevent erosion.

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2 years ago

The wavelength is 1. 87 x 10-7 m. What is the frequency?.

jeka57 [31]

Answer:

11.7 im pretty sure. i did the work so it should be correct

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2 years ago

An electron enters a region with a speed of 5×10^6m/s and is slowed down at the rate of 1.25×10^-4m/s². How far does the electro

Mashutka [201]

1) The distance travelled by the electron is $1\cdot 10^{17} m$

2) The time taken is $4.0\cdot 10^{10}s$

Explanation:

The electron in this problem is moving by uniformly accelerated motion (constant acceleration), so we can use the following suvat equation

$v^2-u^2=2as$

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance travelled

For the electron in this problem,

$u=5\cdot 10^6 m/s$ is the initial velocity

v = 0 is the final velocity (it comes to a stop)

$a=-1.25\cdot 10^{-4} m/s^2$ is the acceleration

Solving for s, we find the distance travelled:

$s=\frac{v^2-u^2}{2a}=\frac{0-(5\cdot 10^6)^2}{2(-1.25\cdot 10^{-4})}=1\cdot 10^{17} m$

The total time taken for the electron in its motion can also be found by using another suvat equation:

$v=u+at$

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time taken

Here we have

$u=5\cdot 10^6 m/s$

v = 0

$a=-1.25\cdot 10^{-4} m/s^2$

And solving for t, we find the time taken:

$t=\frac{v-u}{a}=\frac{0-5\cdot 10^6}{-1.25\cdot 10^{-4}}=4.0\cdot 10^{10}s$

Learn more about accelerated motion:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

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3 years ago

An area with excess electrons has a net _____ charge; an area with a deficit of electrons has a net _____ charge. Question 10 op

Ivenika [448]

Answer:

negative, positive

Explanation:

A we know that the electrons have a negative charge.

So, when a body has some excess electrons, it means it has negative charge.

When a body has an deficiency of eletrons, it means it gains a positive charge.

An area with excess electrons has a net _negative__ charge; an area with a deficit of electrons has a net _Positive____ charge.

8 0

4 years ago