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3 years ago

Plzz helpp mee!!!! plzzz

Physics

1 answer:

Gnesinka [82]3 years ago

7 0

If you add 2 miles from west then 2 miles east then it would 4 miles all together.

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Technician A says that during a power balance test, the cylinder that causes the biggest RPM drop is the weak cylinder.Technicia

Anarel [89]

Answer: A I believe

Explanation:

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3 years ago

In a coal-burning power plant, a condenser is used to cool down the steam and convert it back to liquid water true or false

balandron [24]

False because they let it in to the atmosphere and then its condenced

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4 years ago

Read 2 more answers

A vertical spring with a spring constant of 310 N/m is mounted on the floor. From directly above the spring, which is unstrained

EleoNora [17]

Answer:

7.3cm above the compressed spring.

Explanation:

We can use the conservation energy theorem to solve this problem:

$U_{1}+K_1=U_e+U_2+K_2\\m*g*h+0=\frac{1}{2}k*x^2+0+0\\\\h=\frac{k*x^2}{2*m*g}\\\\h=\frac{310N/m*(3.6*10^{-2})^2}{2*0.28kg*9.8m/s^2}\\\\h=0.073m$

The block was dropped 7.3cm above the compressed spring.

8 0

3 years ago

PLEASE HELP ASAP!!! GIVING BRAINLIEST!!! 40 points!!

Nana76 [90]

W = Fd = 4(2100) = 8400 J

So the answer is A) 8400 J

I was just rewriting my notes on the work lesson I did in class today, so I saw this question at the perfect time!! :)

Hope it helps!! :)

4 0

3 years ago

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Calculate the force required to accelerate a 600 g ball from rest to 14 m/s in 0.1 s.

Evgen [1.6K]

Statement:

A force is required to accelerate a 600 g ball from rest to 14 m/s in 0.1 s.

To find out:

The force required to accelerate the ball.

Solution:

Mass of the ball (m) = 600 g = 0.6 Kg
Initial velocity (u) = 0 m/s [it was at rest]
Final velocity (v) = 14 m/s
Time (t) = 0.1 s

Let the acceleration be a.
We know the equation of motion,
v = u + at

Therefore, putting the values in the above formula, we get
14 m/s = 0 m/s + a × 0.1 s
or, 14 m/s ÷ 0.1 s = a
or, a = 140 m/s²

Let the force be F.
We know, the formula : F = ma

Putting the values in the above formula, we get
F = 0.6 Kg × 140 m/s²
or, F = 84 N

Answer:

The force required to accelerate the ball is 84 N and this force acts along the direction of motion.

Hope you could understand.

If you have any query, feel free to ask.

5 0

3 years ago