The half-life of Cs-137 is 30.2 years. If the initial mass of the sample is 1.00 kg, how much will remain after 151 years?

Physics

2 answers:

nexus9112 [7]3 years ago

8 0

Answer: Its B. There will be 0.031 kg left after 151 years,

Explanation: Im doing my assessment right now.

Xelga [282]3 years ago

3 0

Answer:

i found something on a website that will help you

Explanation:

do you want me to send you it???

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During both the vernal equinox and _____________, there is an equal amount of night and day.

choli [55]

During both the Vernal Equinox and Autumnal equinox, there is an equal amount of night and day
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3 years ago

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A pulley has an initial angular speed of 12.5 rad/s and a constant angular acceleration of 3.41 rad/s2. Through what angle does

Novosadov [1.4K]

Answer:

Angle turn pulley is 113 rad

Explanation:

given data

angular speed w = 12.5 rad/s

angular acceleration a 3.41 rad/s²

time t = 5.26 s

to find out

what angle does the pulley turn

solution

we get here angle by this equation that is here

angle turn = w × t + 0.5 × a × t² ......................1

put here value we get

angle turn = w × t + 0.5 × a × t²

angle turn = 12.5 × 5.26 + 0.5 × 3.41 × 5.26²

Angle turn = 65.75 + 47.17

Angle turn = 112.92 rad = 113 rad

4 0

3 years ago

Write with all the steps and formulas and drawing if needed.

lianna [129]

The answer is not contained detail explanation, just a solution and the required values.

All the details are in the pictures, the answers are marked with orange colour.

Note,

in the task no 20.:

$m_A - the \ mass \ of \ A; \ m_B-the \ mass \ of \ B \ balls.\\V_A \ and \ V_B-the \ velocities \ of \ the \ A&B \ balls \ before \ collision.\\V'_A \ and \ V'_B-the \ velocities \ of \ the \ A&B \ balls \ after \ collision.$

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in the task no 21:

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