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2 years ago

Economic importance of plant resources

2 answers:

7 0

People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization . Plants provide food directly, of course, and also feed livestock that is then consumed itself.

Katena32 [7]2 years ago

3 0

Answer:

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What is the system's potential energy when its kinetic energy is equal to 34e?

mixer [17]

Otal energy= PEmax on the spring = KEmax of the oject
Total Energy= KE+PE at v or x not maximum. 

Using the second line 
E= 3/4 E + PE 
PE = 1/4 E 

PEmax =E = 1/2 kA^2 
PE=E/4 = (1/2)kA^2 / 4= kA^2/8

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

8 0

3 years ago

At Magic Mountain there is a ride in which people stand up against the inside wall of a large cylinder of radius 3 m. The cylind

mafiozo [28]

Answer:

0.1308

Explanation:

To keep the rider from sliding down, then the friction force $F_f$ must at least be equal to gravity force $F_p$

$F_f = F_p$

$\mu N = mg$

where μ is the coefficient, N is the normal force acted by the rotating cylinder, m is the mass of a person and g = 9.81 m/s2 is the gravitational acceleration.

According to Newton's 3rd and 2nd laws, the normal force would be equal to the centripetal force $F_c$ , which is the product of centripetal acceleration $a_c$ and object mass m

$N = F_c = a_cm$

Therefore

$\mu a_cm = mg$

$\mu a_c = g$

The centripetal acceleration is the ratio of velocity squared and the radius of rotation

$a_c = v^2/r = 15^2 / 3 = 75 m/s^2$

Therefore

$\mu = g/a_c = 9.81 / 75 = 0.1308$

3 0

3 years ago

How fast will a ball be traveling if it falls for 5 seconds

Elenna [48]

Gravity accelerates you at 9.8 meters per second per second. After one second, you're falling 9.8 m/s. After two seconds, you're falling 19.6 m/s, and so on.

7 0

4 years ago

If we could see our own galaxy from 2 million light-years away, it would appear _________.

yaroslaw [1]

Answer:

It would appear as a flattened disk with a central bulge and spiral arms, spanning a few degrees across the sky.

Explanation:

I hope this helps! Have a great day!

Anygays-

5 0

3 years ago

A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it decays into an α particle of mass 6.6

ale4655 [162]

Answer: The recoil speed is - 8.9604. $10^{4}$ m/s.

Explanation: According to the Third Law of Newton, every action has an oppsite and equal reaction, and the Second Law of Newton, Force=mass·acceleration. Acceleration is a variation in velocity by any given time, so Force = mass·velocity·time.

Combining the two laws, there is : m1·v1 = - m2·v2. This is the Law of Conservation of Momentum.

Substituting and calculating:

v2 = - ( $\frac{m1}{m2}$ ) · v1

v2 = - $\frac{6.64.10^{-27} }{3.88.10^{-25} }$ · 5.24. $10^{6}$

v2 = - 8.9604. $10^{4}$

The recoil speed of the thorium nucleus is - 8.9604. $10^{4}$ m/s.

8 0

4 years ago

Economic importance of plant resources​

Economic importance of plant resources