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3 years ago

Hi..I'm new here..Can some one help mi with my school work plz

Physics

1 answer:

kirill [66]3 years ago

3 0

Answer:

sure if its easy im jp ill help u

Explanation:

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9. If you placed the contents of a packet of powdered iced tea mix into a bottle of water and shook it, which of the following w

zysi [14]

The water would be solvent. Its your answer!

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3 years ago

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Kūna veikia jėga kurios momentas 0,4 N × m petys - 5 cm. Koks šios jėgos dydis?

umka21 [38]

Answer:

F = 8 N

Explanation:

The question says "The body is subjected to a force with a moment of 0.4 N × m shoulder - 5 cm. What is the magnitude of this force?

Given that,

Moment/Torque, $\tau=0.4\ N-m$

Distance moved, d = 5 cm = 0.05 m

We need to find the magnitude of this force. We know that, the torque acting on an object is given by :

$\tau=Fd\\\\F=\dfrac{\tau}{d}\\\\F=\dfrac{0.4\ N-m}{0.05\ m}\\\\F=8\ N$

So, the magnitude of force is equal to 8 N.

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2 years ago

This is a sience question

levacccp [35]

I would say A is the answer im not sure tho

3 0

3 years ago

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PLZ HELP I DON'T UNDERSTAND!! a boy is playing catch with his friend. He throws the ball straight up. When it leaves his hand, t

algol13

Explanation:

The mass of a ball, m = 2 kg

It is traveling with a speed of 10 m/s

The ball's kinetic energy just as it leaves the boy's hand is calculated as follows :

$K=\dfrac{1}{2}mv^2\\\\K=\dfrac{1}{2}\times 2\times (10)^2\\\\=100\ J$

The ball's kinetic energy just as it leaves the boy's hand is 100 J. The potential energy of the ball when it reaches the highest point is same as the kinetic energy as it leaves the boy's hand.

Hence, the required kinetic and potential energy is 100 J.

6 0

2 years ago

Explain, in terms of impulse and momentum, how airbags help avoid injury in a car crash?

valentinak56 [21]

Explanation:

Impulse is the change in momentum. It is also equal to the average force times the change in time.

J = Δp

F Δt = m Δv

The change in momentum is a fixed number; your mass, initial velocity, and final velocity are constant.

F Δt = k

So force and time are inversely proportional. What this means is, we can either have a large force over a short period of time, or a small force over a long period of time.

Obviously, we want a small force over a long period of time. Without airbags, your head would hit the steering wheel very quickly. With airbags, your head has time to decelerate, so there's less force.

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3 years ago

Hi..I'm new here..Can some one help mi with my school work plz​

Hi..I'm new here..Can some one help mi with my school work plz