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iren [92.7K]
3 years ago
13

If a substance cannot be separated by physical means or chemical means, it is ___________.

Physics
2 answers:
mojhsa [17]3 years ago
8 0
If a substance cannot be separated by physical means or chemical means, it is _an element_.
bogdanovich [222]3 years ago
5 0

If a substance cannot be separated by physical means or chemical means, it is _an element_.. your welcome :)

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Horseshoe bats (genus Rhinolophus) emit sounds from their nostrils, then listen to the frequency of the sound reflected from the
Triss [41]

Answer:

Check the explanation

Explanation:

This is the step by step explanation to the above question:

v_i = v [ f_L *(v - v_b) - f_s*(v + v_b)] / [f_L * (v - v_b) + f_s*(v +v_b)]

= v * (83.1 * (v-4.3) - 80.7 ( v+4.3))/ [83.1 *(v - 4.3) + 80.7*(v + 4.3)]

v = 344 m/s

vi = 344 * ( 83.1* (344-4.3) - 80.7*(344+4.3) ) / (83.1 *(344 - 4.3) + 80.7*(344 + 4.3))

= 0.74 m/s

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3 years ago
What is -0.000000698 in scientific notation
dangina [55]

-6.98 × 10-^7 is the answer <3

6 0
3 years ago
What is the measurement of 29.46 cm, when rounded to three significant figures?
bezimeni [28]
29.5cm is the answer
7 0
3 years ago
When a 1.50V battery is shorted by a copper wire whose resistance can be ignored, the current through the copper wire is 2.75 A.
viva [34]

Answer:

Internal resistance = 0.545 ohm

Explanation:

As per ohm's law we know that

V = iR

here we know that

i = electric current = 2.75 A

V = potential difference = 1.50 Volts

now from above equation we have

1.50 = 2.75 ( R)

now we have

R = \frac{1.50}{2.75}

R = 0.545 ohm

5 0
3 years ago
A current is induced by moving a magnet in and out of a coil of wire. What will happen to the induced current if you move the
Virty [35]

the answer is c. The induced current will increase

5 0
2 years ago
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