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faltersainse [42]

2 years ago

9

Economic importance of plant resources

2 answers:

Vesna [10]2 years ago

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:

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.

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A 5 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force that varies with posit

jekas [21]

The work done is 315 J

Explanation:

The graph is missing: find it in attachment.

The work done by a variable force is given by

$W=\int F(x) dx$

where

F(x) is the magnitude of the force

x is the position

On a force vs position graph, the work done is equivalent to the area under the graph. Therefore, in order to find the work done as the block moves from x = 0 to x = 8.0 m, we have to calculate the area under the graph between these two points.

Each square corresponds (vertically) to 45 N, so the area of the first trapezium between x = 0 and x = 4.0 m is

$A_1 = \frac{(4+2)\cdot 2\cdot 45)}{2}=270$

Then we have to find the area of the triangle between x = 6.0 m and x = 8.0 m:

$A_2 = \frac{1}{2}(2)(45)=45$

Therefore, the total area (and the work done) is

$W=A_1+A_2=270+45=315 J$

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5 0

3 years ago

An ideal spring is mounted horizontally, with its left end fixed. The force constant of the spring is 170 N/m. A glider of mass

solniwko [45]

Answer:

A) The new amplitude = 0.048 m

B) Period T = 0.6 seconds

Explanation: Please find the attached files for the solution

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3 years ago

5 . W h ic h o f th e fo l lo w in g is N O T a fu n d a m e n ta l S .I u n it? A . M e te r B . A m p e re C . K e lv in D . R

Flauer [41]

Answer:

D. Radian

Explanation:

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5 0

2 years ago

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The Earth's escape speed (the speed you need to get away forever) is about 40,000 kilometers per hour. Escape speed depends on t

Anvisha [2.4K]

The Moon s escape speed will be smaller than Earth's.

What is escape speed:

The minimum speed that is required for an object to free itself from the gravitational force exerted by a massive object.

The formula of escape speed is

$v = \sqrt{\frac{2GM}{R} }$

where

v is escape velocity

G is universal gravitational constant

M is mass of the body to be escaped from

r is distance from the center of the mass

we can say that,

Escape speed depends on the gravity of the object trying to hold the spacecraft from escaping.

we know that,

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second per second.

since, v ∝ g

The Moon s escape speed will be smaller than Earth's.

Learn more about escape speed here:

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2 years ago

1. True or False: Most things in motion are accelerating, few things in real life move at a constant speed.

lord [1]

1. False
2. Positive
I’m just joking I don’t know the answersss

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2 years ago