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azamat
3 years ago
11

Fire extinguishers and fire blankets should be mounted on a surface that is painted ____.

Physics
1 answer:
olya-2409 [2.1K]3 years ago
7 0
<span>Fire extinguishers and fire blankets should always be mounted on a surface that is painted red. This is a bright color and easy to locate. It makes it much safer for people that need to find these objects on quick notice.</span>
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What does Einstein's famous equation for nuclear energy, E = mc^2, mean?
Nezavi [6.7K]
Yup the correct answer is A jus finished the quiz :)

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8 0
4 years ago
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is
inn [45]
Two small spheres spaced 20.0 cm apart have equal charge.

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N?

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5 0
3 years ago
Straight wire of indefinite length (transient) passed by an electric current of 5.0 A. The magnetic field generated around this
olchik [2.2K]

Answer:

C. 2.0 cm

Explanation:

The magnetic field around the wire at point M is given by Biot-Savart Law:

B = \frac{\mu_o I}{2\pi R}

where,

B = Magnetic field = 50 μT = 5 x 10⁻⁵ T

I = current = 5 A

μ₀ = permeability of free space = 4π x 10⁻⁷ N/A²

R = distance of point M from wire = ?

Therefore,

5\ x\ 10^{-5}\ T = \frac{(4\pi\ x\ 10^{-7}\ N/A^2)(5\ A)}{2\pi R}\\\\R = \frac{(2\ x\ 10^{-7}\ N/A^2)(5\ A)}{5\ x\ 10^{-5}\ T}\\

R = 0.02 m = 2 cm

Hence, the correct option is:

<u>C. 2.0 cm</u>

7 0
3 years ago
A passenger train left station A at 6:00 p.m. Moving with the average speed 45 mph, it arrived at station B at 10:00 p.m. A tran
marishachu [46]
<h2>Average speed of transit train is 60 mph</h2>

Explanation:

Average speed of passenger train = 45 mph

Time taken from station A to station B for passenger train  = 10:00 - 6:00 = 4 hours

Distance between station A to station B = 45 x 4 = 180 miles.

Time taken from station A to station B for transit train  =  4 - 1 = 3 hours

Distance between station A to station B = Average speed of transit train x Time taken from station A to station B for transit train

180 = Average speed of transit train x 3

Average speed of transit train = 60 mph

Average speed of transit train is 60 mph

8 0
4 years ago
Why is it incorrect to say "We ran out of gas." when referring to your cars energy source?
allochka39001 [22]
We ran out of fuel would be the correct answer - gas is too <span>ambiguous and could be understood and gasoline.</span>
7 0
3 years ago
Read 2 more answers
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