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3 years ago

How many nanoseconds are in one hour? How do you write the following in scientific notation?

Physics

1 answer:

Grace [21]3 years ago

3 0

Answer:

3.6 × 10¹² nanoseconds

Explanation:

Hour is the unit of time. Seconds is the SI unit of time.

Hour and seconds are related as:

1 hour = 60 minutes

1 minute = 60 seconds

So,

1 hour = 60 ×60 seconds = 3600 seconds

Thus,

3600 seconds are in one hour

Also,

1 sec = 10⁹ nanoseconds

Thus,

3600 sec = 3600 × 10⁹ nanoseconds = 3.6 × 10¹² nanoseconds

Thus,

3.6 × 10¹² nanoseconds are in one hour.

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A standard electrical outlet has three wires connected to it: the hot, the neutral, and the ground. There is no potential differ

Over [174]

Answer:

The neutral wire and the ground wire.

Explanation:

The black wire is the hot wire

The neutral wire provides the return path for the current provided by the hot wire.

The ground wire is connected to any metal parts in an appliance for example microwave.

A standard electrical outlet has three wires connected to it: the hot, the neutral, and the ground. There is no potential difference between the neutral wire and the ground wire.

7 0

3 years ago

Which of these will NOT help reduce c02 levels in the atmosphere?

denpristay [2]

Answer:

the answer would be "using more heat" btw

Explanation:

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2 years ago

A 0.270 m radius, 510-turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having its plane perpendicular to a

vlada-n [284]

Answer:

0.35701 T

Explanation:

$B_i$ = Initial magnetic field

$B_f$ = Final magnetic field

$\phi$ = Magnetic flux

t = Time taken = 4.17 ms

N = Number of turns = 510

$\epsilon$ = Induced emf = 10000 V

r = Radius = 0.27 m

A = Area = $\pi r^2$

Induced emf is given by

$\epsilon=-N\frac{d\phi}{dt}\\\Rightarrow \epsilon=-N\frac{B_fAcos90-B_iAcos0}{dt}\\\Rightarrow \epsilon=N\frac{B_iA}{dt}\\\Rightarrow B_i=\frac{\epsilon dt}{NA}\\\Rightarrow B_i=\frac{10000 \times 4.17\times 10^{-3}}{510\times \pi 0.27^2}\\\Rightarrow B_i=0.35701\ T$