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blsea [12.9K]
3 years ago
10

Suppose you have 12 grams of a sample of a radioactive metal. After 15 days, you have 1.5 grams of radioactive metal and 10.5 gr

ams of stable metal. What is the half-life of the radioactive metal?
Physics
1 answer:
Archy [21]3 years ago
8 0
The awnser is 72 on brainly
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Help please ............
Solnce55 [7]

Answer:

47c

Explanation:

5 0
3 years ago
You have an electrically neutral toy that you divide into two pieces. You notice that at least one of those pieces has an electr
musickatia [10]

Answer:

Attract

Explanation:

According to the properties of charge, the bodies having unlike charges attract each other and the bodies having like charges repel each other.

As the toy is initially electrically neutral, so as it is divided into two pieces, then according to the conservation of charge, the one piece having positive charge and the other piece having negative charge. As they are unlike charges so they attract each other.

8 0
4 years ago
How can i better study to better prepare for exams
ira [324]
Organize your study space. ...
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6 0
3 years ago
Read 2 more answers
A series circuit has a 100-Ω resistor, 4.00-mH inductor and a 0.100-μF capacitor connected across a 120-V rms ac source at the r
scZoUnD [109]

Answer:

144 watt

Explanation:

resistance, R = 100 ohm

L = 4 mH

C = 100 micro farad

At resonance, the impedance is equal to R

Z = R

Vrms = 120 V

Irms = Vrms / R = 120 / 100 = 1.2 A

Power is given by

P = Vrms x Irms x CosФ

Where, CosФ is called power factor

At resonance, CosФ = 1  

Power, P = Irms x Vrms

P = 1.2 x 120 x 1

P = 144 Watt.

Thus, the power is 144 watt.

6 0
4 years ago
28.25 mL, three signicant digits
Mazyrski [523]

Answer:3) variable affinities (stickiness) for something it is running past. Physical ... -measurement number (significant digits) unit (such as inches) -Significant ... Mass 1 oz. 28.25 g. Relations Between English and Metric Units Mass 1 dram. 1.772 g ... -graduated cylinder has an error of about 1% (± 0.1 mL in 10 mL). -Volumetric

Explanation:

3 0
3 years ago
Read 2 more answers
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