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3 years ago

13

When two substances are mixed together, a color change is observed. Does this mean that a chemical reaction has definitely occur

red?

1 answer:

Elanso [62]3 years ago

7 0

Nope, color change can also occur during a physical change.

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Math hard for me now <br> Help me please please help I bean do it a lot

wlad13 [49]

5 is a prime number because it only has two factors which are 1 and 5.

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2 years ago

The secondary coil of a neon sign transformer provides 7500 V at 0.01 A. The primary coil operates on 120 V. What is the input c

nikitadnepr [17]

Answer:

0.625 A

Explanation:

Vs = 7500 V, Is = 0.01 A

Vp = 120 V

Let the primary current be Ip.

As the transformer is ideal, so input power is equal to the output power

Vp x Ip = Vs x Is

120 x Ip = 7500 x 0.01

Ip = 0.625 A

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3 years ago

In this football play the quarterback keeps the ball and goes straight ahead, behind the blocking of the center and the guards.

oksano4ka [1.4K]

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3 years ago

250 W 12 km/h<br>4. Convert yoor answer from 3 to meters per second.

taurus [48]

Answer: 3.33 m/s

Explanation:

Assuming the questions is to convert 12 km/h to meter per second (m/s), let's begin:

In order to make the conversion, we have to know the following:

$1 km=1000 m$

And:

$1 h=3600 s$

Keeping this in mind, we can make the conversion:

$12 \frac{km}{h} \frac{1000 m}{1 km} \frac{1h}{3600 s}$

Then:

$12 \frac{km}{h}= 3.33 \frac{m}{s}$

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3 years ago

What is it called when there’s an atom that has fewer neutrons than protons and more electrons than protons??l

HACTEHA [7]

Answer: The answer is an atom.

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3 years ago