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4 years ago

What is transpiration

1 answer:

5 0

Transpiration is the evaporation of water from plants. This occurs when water drawn from the roots is brought up the leaves (as it usually should), and, because of the outside heat, it vaporizes and exits via the pores found on the underside of the leaves.

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A cold block of metal feels colder than a block of wood at the same temperature. Why? A hot block of metal feels hotter than a b

tino4ka555 [31]

: In general, metals feel colder or hotter to the touch than other materials at the same temperature because they're good thermal conductors. This means they easily transfer heat to colder objects or absorb heat from warmer objects

5 0

3 years ago

Read 2 more answers

Select the correct the answer.

Ymorist [56]

Answer:

it shows that co2 is absorbed by the atmosphere.

when the animals respire they produce co2 which is release in atmosphere and in presence of sunlight and chlorophyll the plants manufacturs the food and releases the oxygen in the atmosphere .

hope it helps..

3 0

4 years ago

Mr. Tolman believes that our universe is expanding, but with all of the gravitational force from the celestial bodies of space,

sattari [20]

The correct answer is A I believe but I may not be correct. Either A or B

8 0

3 years ago

A particle of mass 2.37 kg is subject to a force that is always pointed towards East or West but whose magnitude changes sinusoi

Pavlova-9 [17]

Answer:

$v(1.5)=0.7648\ m/s$

Explanation:

Dynamics

When a particle of mass m is subject to a net force F, it moves at an acceleration given by

$\displaystyle a=\frac{F}{m}$

The particle has a mass of m=2.37 Kg and the force is horizontal with a variable magnitude given by

$F=2cos1.1t$

The variable acceleration is calculated by:

$\displaystyle a=\frac{F}{m}=\frac{2cos1.1t}{2.37}$

$a=0.8439cos1.1t$

The instant velocity is the integral of the acceleration:

$\displaystyle v(t)=\int_{t_o}^{t_1}a.dt$

$\displaystyle v(t)=\int_{0}^{1.5}0.8439cos1.1t.dt$

Integrating

$\displaystyle v(1.5)=0.7672sin1.1t \left |_0^{1.5}$

$\displaystyle v(1.5)=0.7672(sin1.1\cdot 1.5-sin1.1\cdot 0)$

$\boxed{v(1.5)=0.7648\ m/s}$

3 0

3 years ago

All of the following show friction as a useful force, except

Troyanec [42]

having to push a rough and heavy box across the floor to move it

Explanation:

Friction is not a useful force because we have to exert even more force to push a body that is rough and heavy across the floor to move it.

Frictional force is a force that opposes the motion of a body.
It costs more and uses more energy to push a rough and heavy box on surface because of friction.
This wastes energy in systems that deals with pushing.

Friction is useful in that:

the heat energy produced when two surfaces rub together is very useful.
the friction between your feet and the floor keeping you from slipping and makes walking possible.
the tread on tires helping the moving vehicle slow down and stop when necessary.

learn more:

Friction brainly.com/question/7174363

#learnwithBrainly

3 0

3 years ago