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FrozenT [24]
4 years ago
13

HOW CAN I SOLVE THIS QUESTION? PLEASE HELP The movement of a locomotive piston in the cylinder is limited to 0.76 m. Assume that

the piston makes a simple harmonic movement that makes 180 revolutions per minute, and find its maximum speed.
Physics
1 answer:
lions [1.4K]4 years ago
5 0

Answer:

7.2 m/s

Explanation:

The maximum speed is the amplitude times the frequency.

v = Aω

v = (0.76 m / 2) (180 rev × 2π rad/rev / 60 s)

v = 7.2 m/s

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if a bullet fired beneath the water, straight up, breaks through the surface at a speed of 25m/s, how high will the bullet be af
Doss [256]

Answer:

32 m and -2.4 m/s

Explanation:

Given:

v₀ = 25 m/s

t = 2.8 s

a = -9.8 m/s²

Find: Δy, v

Δy = v₀ t + ½ at²

Δy = (25 m/s) (2.8 s) + ½ (-9.8 m/s²) (2.8 s)²

Δy = 31.6 m

v = at + v₀

v = (-9.8 m/s²) (2.8 s) + 25 m/s

v = -2.44 m/s

Rounded to two significant figures, the bullet reaches a height of 32 m and a velocity of -2.4 m/s.

8 0
4 years ago
Help me please with science
Simora [160]

Answer:its b

Explanation:

8 0
3 years ago
A lamp has a current of 2.17 A. In hours, how long does it take for 1 mole of electrons to pass through the lamp?
Gennadij [26K]

<u>Answer:</u> The amount of time needed for 1 mole of electrons to pass through the lamp is 12.33 hrs.

<u>Explanation:</u>

We are given:

Moles of electron = 1 mole

According to mole concept:

1 mole of an atom contains 6.022\times 10^{23} number of particles.

We know that:

Charge on 1 electron = 1.6\times 10^{-19}C

Charge on 1 mole of electrons = 1.6\times 10^{-19}\times 6.022\times 10^{23}=9.6352\times 10^4C

To calculate the time required, we use the equation:

I=\frac{q}{t}

where,

I = current passed = 2.17 A

q = total charge = 9.6352\times 10^4C

t = time required = ?

Putting values in above equation, we get:

2.17A=\frac{9.6352\times 10^4C}{t}\\\\t=\frac{9.6352\times 10^4C}{2.17A}=44402s

Converting this into hours, we use the conversion factor:

1 hr = 3600 seconds

So, 44402s\times \frac{1hr}{3600s}=12.33hr

Hence, the amount of time needed for 1 mole of electrons to pass through the lamp is 12.33 hrs.

3 0
3 years ago
Rest and motion are inter-related to each other, explain​
mamaluj [8]

Answer:

Rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body.

3 0
4 years ago
Read 2 more answers
Push-and-pull factors contribute to _____.<br> economics<br> politics<br> migration<br> education
kaheart [24]

c) migration

Push factors are the reasons why people leave an area. Pull factors are the reasons why people move to a particular area.

7 0
3 years ago
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