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2 years ago

A car traveling at 100 km/hr strikes and unfortunate bug and splatters it.the net force of impact is

Physics

1 answer:

Paladinen [302]2 years ago

7 0

Answer:

it's zero

Explanation:

it is there is your answer

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What keeps the particles of a liquid from spreading out to fill an entire container in the same way that gas particles do?

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b. the forces of attraction among them limit their motion.

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4 years ago

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A 20.0-N weight slides down a rough inclined plane which makes an angle of 30 degree with the horizontal. The weight starts from

Ulleksa [173]

Answer:

$1270.64\ \text{J}$

Explanation:

m = Mass of object = $\dfrac{mg}{g}$

mg = Weight of object = 20 N

g = Acceleration due to gravity = $9.81\ \text{m/s}^2$

v = Final velocity = 15 m/s

u = Initial velocity = 0

d = Distance moved by the object = 150 m

$\theta$ = Angle of slope = $30^{\circ}$

f = Force of friction

fd = Work done against friction

The force balance of the system is

$\dfrac{1}{2}m(v^2-u^2)=(mg\sin\theta-f)d\\\Rightarrow \dfrac{1}{2}mv^2=mg\sin\theta d-fd\\\Rightarrow fd=mg\sin\theta d-\dfrac{1}{2}mv^2\\\Rightarrow fd=20\times \sin 30^{\circ}\times 150-\dfrac{1}{2}\times \dfrac{20}{9.81}\times 15^2\\\Rightarrow fd=1270.64\ \text{J}$

The work done against friction is $1270.64\ \text{J}$ .

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3 years ago

Atoms are the smallest portions of an element that retain the original characteristics of the element. True or false

kozerog [31]

Answer:

True

Explanation:

Going even smaller than atoms would get you to subatomic particles such as quarks. From there, it is impossible to distinguish elements. So, yes, atoms are the smallest portions of an element that retains the original characteristic of the element.

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3 years ago

Helppppp pleaseee :(

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1) push down on the end of the lever, and 2) 3/4 of the way from the fulcrum

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3 years ago

A demographic tool used to predict a population's future growth is

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C. Age structure. Hope I helped :)

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3 years ago