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Zinaida [17]
4 years ago
10

Simple Harmonic Motion Problems:

Physics
1 answer:
inessss [21]4 years ago
5 0

Find the answer in the attachment

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You step on the gas pedal in your car, and the car engine’s rotational speed changes from 1200 rpm to 3000 rpm in 3.0 s. What is
Gnom [1K]

frequency of engine is given here

initial frequency = 1200 rpm

f_i = 1200/60 = 20 Hz

final frequency = 3000 rpm

f_f = 3000/60 = 50 Hz

now we have angular speed as

\omega_i = 2\pi f_i

\omega_i = 2\pi(20) = 40\pi

similarly

\omega_f = 2\pi f_f

\omega_f = 2\pi(50) = 100 \pi

now by the formula of angular acceleration we will have

\alpha = \frac{\omega_f - \omega_i}{\Delta t}

\alpha = \frac{100\pi - 40\pi}{3}

\alpha = 20\pi rad/s^2

\alpha = 62.8 rad/s^2

4 0
3 years ago
Why are there multiple versions of the scientific method?
gavmur [86]

Answer:

it's because some versions have more steps and others have less

4 0
3 years ago
At a certain elevation, the ________ , the air becomes saturated and water-vapor molecules ________.
andriy [413]

At certain altitude, the temperature of air decrease, The air becomes saturated and water vapour molecules starts condensing.


As the altitude of air increase, the atmospheric pressure decrease due to which the temperature of the air decrease. The water molecules in the atmosphere start condensing, which saturate the air (that is air can no hold water molecules), due to which the water vapour molecules starts condensing and falls on the earth in the form of rain.


4 0
4 years ago
What kind of waves are present during an earthquake? ...
Brrunno [24]

Answer:

1. The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

2. potential energy

3. Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

4. Refraction is the bending of light

5. Density uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). Density is defined as mass per unit volume.

Explanation:

6 0
3 years ago
Kepler’s third law can be used to derive the relation between the orbital period, P (measured in days), and the semimajor axis,
NikAS [45]
Kepler's 3rd law is given as
P² = kA³
where
P = period, days
A = semimajor axis, AU
k = constant

Given:
P = 687 days
A = 1.52 AU

Therefore
k = P²/A³ = 687²/1.52³ = 1.3439 x 10⁵ days²/AU³

Answer:  1.3439 x 10⁵ (days²/AU³)

8 0
3 years ago
Read 2 more answers
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