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Hunter-Best [27]
3 years ago
6

Một trụrỗng có khối lượng 50 kg, đường kính 1m, đang quay vớivận tốc800 vòng một phút. Tác dụng vào trụmột lực hãm tiếp tuyến vớ

i mặt trụvà vuông góc với trục quay. Sau 2 phút 37 giây, trụdừng lại. Tìm:a –Mômen hãmb –Lực hãm tiếp tuyến
Physics
1 answer:
satela [25.4K]3 years ago
6 0

Answer:

i now peklat mo sa pewet

Explanation:

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When playing a game of disc golf, each throw to your target is considered to be a O Point O Stroke O Hit O Toss​
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an o point i think

Explanation:

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I need help on these 3 questions. <br> I need the original formula used and the givens
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Explanation:

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7 0
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What statements best describe magnets?
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they stick together when they get close

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3 years ago
The age of a piece of wood from an archeological site is to be determined using the Carbon-14 method. The activity of the sample
Bezzdna [24]

Answer:

4589.05 year

Explanation:

The relation of activity is given by A=A_0e^{\lambda t} we have given \frac{A}{A_0}=0.574

Half life T=5730\ years

We know that half life T=\frac{0.693}{\lambda }

\lambda =\frac{0.693}{5730}=1.2094\times 10^{-4}\ per\ year

So 0.574=e^{-1.2094\times 10^{-4}t}

e^{1.2094\times 10^{-4}t}=\frac{1}{0.574}=1.742

{1.2094\times 10^{-4}t}=ln1.742=0.555

t=\frac{0.555}{1.2094\times 10_{-4}}=4589.05\ year

7 0
3 years ago
How is the oxygen level of blood related to its color?
MAVERICK [17]
Answer:

Hemoglobin bound to oxygen absorbs blue-green light, which means that it reflects red-orange light into our eyes, appearing red. That's why blood turns bright cherry red when oxygen binds to its iron. Without oxygen connected, blood is a darker red color.

Hope this helps :)
6 0
3 years ago
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