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stellarik [79]
3 years ago
5

Power is calculated by multiplying voltage by

Physics
1 answer:
butalik [34]3 years ago
5 0

If you're calculating the power of an athlete who is lifting weights,
or the power of a windmill that is pumping water from a well, or
the power of two horses turning millstones, then those electrical
units won't help at all.

But if you happen to be calculating the power delivered to an
electrical circuit or dissipated by an electrical device, then you
can use ...

                (voltage) times (current)
or
                (voltage)² divided by (resistance)
or
                (current)² times (resistance) .

The choice just depends on which quantities you know
or can easily measure.  

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What are the purposes of these items aboard the Voyager probes? • Low-energy particle detector: • Magnetometer boom: • High-gain
marta [7]

Explanation:

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2. Magnetometer boom: This device measures magnetic fields produced by astronomical bodies.

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4 0
3 years ago
The mass of the sphere is 0.151 kg. What is the rotational inertia of the wheel
shusha [124]

Complete Question:

The mass of the sphere is 0.151 kg. What is the rotational inertia of the wheel? Recall that the radius of the sphere is about 0.312 m. Express your answer with three significant figures in Kg.m².

Answer:

I = 5.88*10⁻³ kg.m²

Explanation:

It can be showed that the rotational inertia (or moment of inertia) for a solid sphere of radius r and mass m, regarding any axis passing through the center of the sphere,  can be expressed as follows:

I = (2/5)*m*r² (1)

where m= 0.151 kg, and r =0.312 m. (Our givens).

Replacing in (1) we have:

I = (2/5)*0.151 kg*(0.312m)² = 5.88*10⁻³ kg.m²

7 0
4 years ago
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Answer: 3

Explanation:

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