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Ipatiy [6.2K]
1 year ago
8

If a substance has a half-life of 45 min, how many minutes will it take for 220 g of the substance to be depleted to 1.00 g?.

Physics
1 answer:
AnnZ [28]1 year ago
4 0

The time taken for the substance to decay to 1 g of its original mass is 350 mins.

<h3>What is half life?</h3>

The half life of a radioactive element is the time taken for the half of the element to decay to half of its original size.

N = N₀(¹/₂)^t/h

where;

  • N is the remaining mass
  • N₀ is the original mass
  • h is half life
  • t is time

1 = 220(¹/₂)^t/h

1/220 = (¹/₂)^t/h

log(1/220) = log(¹/₂)^t/h

log(1/220) = t/h [log(¹/₂)]

-2.342 = t/h (-0.301)

7.78 = t/h

7.78 x h = t

7.78 x 45 min = t

350 mins = t

Thus, the time taken for the substance to decay to 1 g of its original mass is 350 mins.

Learn more about half life here: brainly.com/question/2320811

#SPJ1

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What determines how long it takes for the capacitor to charge?
myrzilka [38]

The time constant determines how long it takes for the capacitor to charge.

To find the answer, we have to know more about the time constant of the capacitor.

<h3>What is time constant?</h3>
  • The time it takes for a capacitor to discharge 36.8% of its charge in a discharging circuit or charge up to 63.2% of its maximum capacity in a charging circuit, given that it has no initial charge, is the time constant of a resistor-capacitor series combination.
  • The circuit's reaction to a step-up (or constant) voltage input is likewise determined by the time constant.
  • As a result, the time constant determines the circuit's cutoff frequency.

Thus, we can conclude that, the time constant determines how long it takes for the capacitor to charge.

Learn more about the time constant here:

brainly.com/question/17050299

#SPJ4

6 0
2 years ago
Which of the following are not units of frequency: Hertz. m/s. waves/s
ra1l [238]

The answer is waves.

8 0
3 years ago
If u have a box with mass of 10kg and u push with a force of 200 N what is the acceleration of the box ?
AnnZ [28]

Answer:

20m/s²

Explanation:

force = mass*acceleration

acceleration = force ÷ mass

acceleration = 200N ÷ 10kg

acceleration = 20m/s²

5 0
3 years ago
HEY CAN ANYONE ANSWER DIS RQ!!!!!!
emmasim [6.3K]

Answer:

Density is the mass to volume ratio of an object.

> It tells you how compact the mass is.

> Density = mass/volume

The density of water is 1 g/ml or 1 kg/L or 1000 kg/m3

• If an object has a density less than that of water, it

will float.

• If an object has a density more than that of water, it

will sink

Explanation:

hope this helps some

7 0
3 years ago
Read 2 more answers
determine the force of gravitational attraction between a 78kg boy sitting 2 meters away from a 65kg girl.
bixtya [17]

Answer:

F=8.45\times 10^{-8}\ N

Explanation:

Given that,

Mass of a boy is 78 kg

Mass of a girl is 65 kg

We need to find the force of gravitational attraction between them if they are 2 m away.

The formula for the gravitational force is given by :

F=\dfrac{Gm_1m_2}{r^2}\\\\F=\dfrac{6.67\times 10^{-11}\times 78\times 65}{(2)^2}\\\\=8.45\times 10^{-8}\ N

So, the force between them is 8.45\times 10^{-8}\ N.

8 0
3 years ago
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