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2 years ago

If your car tachometer says your engine is moving at 1200 RPM, then what is it's angular velocity in Rad/sec?

Physics

1 answer:

Ostrovityanka [42]2 years ago

3 0

Answer:

125.66 R/s

Explanation:

First 1200 r / min = 20 r/sec

20 r/s * 2pi Radians / r = 40 pi Radians / sec = 125.66 R/s

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A thin film of oil rests on an inclined plane

dolphi86 [110]

What is the question?

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3 years ago

A hula hoop is rolling along the ground with a translational speed of 26 ft/s. It rolls up a hill that is 16 ft high. Determine

nikklg [1K]

Answer:12.8 ft/s

Explanation:

Given

Speed of hoop $v=26\ ft/s$

height of top $h=16\ ft$

Initial energy at bottom is

$E_b=\frac{1}{2}mv^2+\frac{1}{2}I\omega ^2$

Where m=mass of hoop

I=moment of inertia of hoop

$\omega$ =angular velocity

for pure rolling $v=\omega R$

$I=mR^2$

$E_b=\frac{1}{2}mv^2+\frac{1}{2}mR^2\times (\frac{v}{R})^2$

$E_b=mv^2=m(26)^2=676m$

Energy required to reach at top

$E_T=mgh=m\times 32.2\times 16$

$E_T=512.2m$

Thus 512.2 m is converted energy is spent to raise the potential energy of hoop and remaining is in the form of kinetic and rotational energy

$\Delta E=676m-512.2m=163.8m$

Therefore

$163.8 m=mv^2$

$v=\sqrt{163.8}$

$v=12.798\approx 12.8\ ft/s$

7 0

3 years ago

Which is the most accurate name for the covalent compound P2O3?

dexar [7]

P2o3 is <span>diphosphorus trioxide.
Add water and you get phosphoric acid</span>

6 0

3 years ago

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Identify solar, wind, nuclear, and tidal power as nonrenewable or renewable energy

Nostrana [21]

Answer:

Renewable energy: Tidal, solar and wind

Non renewable energy: nuclear power

Explanation:

Renewable energy is any energy in which its source is always replenished or renewed.

While non renewable energy sources cannot be replenished or renewed immediately because of its limited availability of resources.

Most renewable energy sources are natural sources.

Solar, tidal and wind energy are renewable energy known as clean energy. While nuclear energy is a non renewable energy in which its source of energy is fuel ( uranium e.t.c)

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3 years ago

3. What is the acceleration of a 10 kg mass pushed by a 5 N force?

insens350 [35]

Answer:

F=ma

Plug it in:

5=10a

5/10=(10a)/10

.5m/s²=a

Explanation:

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3 years ago

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