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3 years ago

13

Which of the following advancements could science and technology reasonably contribute to society?

2 answers:

Alexxx [7]3 years ago

7 0

Answer:

idk search it on google chrome

Explanation:

tia_tia [17]3 years ago

3 0

Answer:

The effects of technological advancement are both positive and negative. Positively, technology advancement has simplified the way we do things, it saves time, it increases on production, it simplifies communication, it has improved health care and it has also improved our educational environment.

Explanation:

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If a leaf falls from a tree, has work been done on the leaf? Explain.

mihalych1998 [28]

Answer:

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2 years ago

The isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. What isotope is created?

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3 years ago

Read 2 more answers

A solid, horizontal cylinder of mass 18.0 kg and radius 1.70.0 m rotates with an angular speed of 40 rad/s about a fixed vertica

Radda [10]

Answer:39.88 rad/s

Explanation:

Given

mass of cylinder m_1=18 kg

radius R=1.7 m

angular speed $\omega =40rad/s$

mass of $m_2=0.8 kg$ dropped at r=0.3 m from center

let $\omega _2$ be the final angular velocity of cylinder

Conserving Angular momentum

$L_1=L_2$

$\left ( \frac{m_1R^2}{2}\right )\omega =\left ( \frac{m_1R^2}{2}+m_2r^2\right )\omega _2$

$\left ( \frac{18\cdot 1.7^2}{2}\right )\cdot 40=\left ( \frac{18\cdot 1.7^2}{2}+0.8\cdot 0.3^2\right )\omega _2$

$26.01\times 40=26.082\times \omega _2$

$\omega _2=39.88 rad/s$

3 0

3 years ago

Can a material have negative permittivity?

sleet_krkn [62]

No it can't it's material

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3 years ago

Do all planets orbit the sun in the same direction

horsena [70]

Answer:

No

Explanation:

All planets are different than others and bigger so that means no

8 0

2 years ago