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3 years ago

8

Two processes of plant reproduction are described below.

2 answers:

alex41 [277]3 years ago

5 0

Answer:

Process 1

Explanation:

Bees help move the pollen from flower to flower

omeli [17]3 years ago

3 0

Answer:

<h2>A </h2>

procces 1

Explanation:

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Which of the following corn pests causes galls to develop on the plant?

Vlad1618 [11]

Answer:

The answer is Smut.

Explanation:

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3 years ago

How do the positions of the hot and cold water affect the speed of convection

Aleks [24]

Convection is the process in which heat is transferred by movement of a heated fluid such as air or water. Natural convection results from the tendency of most fluids to expand when heated so it becomes less dense and rise above.

For example- In a pot of water on a stove the liquid t bottom is heated by conduction. The hot water has lower density and it rises above pushing the cold water downwards so it gets heated.

5 0

3 years ago

Read 2 more answers

In an RLC series circuit that includes a source of alternating current operating at fixed frequency and voltage, the resistance

maw [93]

Answer:

Capacitive Reactance is 4 times of resistance

Solution:

As per the question:

R = $X_{L} = j\omega L = 2\pi fL$

where

R = resistance

$X_{L} = Inductive Reactance$

f = fixed frequency

Now,

For a parallel plate capacitor, capacitance, C:

$C = \frac{\epsilon_{o}A}{x}$

where

x = separation between the parallel plates

Thus

C ∝ $\frac{1}{x}$

Now, if the distance reduces to one-third:

Capacitance becomes 3 times of the initial capacitace, i.e., x' = 3x, then C' = 3C and hence Current, I becomes 3I.

Also,

$Z = \sqrt{R^{2} + (X_{L} - X_{C})^{2}}$

Also,

Z ∝ I

Therefore,

$\frac{Z}{I} = \frac{Z'}{I'}$

$\frac{\sqrt{R^{2} + (R - X_{C})^{2}}}{3I} = \frac{\sqrt{R^{2} + (R - \frac{X_{C}}{3})^{2}}}{I}$

${R^{2} + (R - X_{C})^{2}} = 9({R^{2} + (R - \frac{X_{C}}{3})^{2}})$

${R^{2} + R^{2} + X_{C}^{2} - 2RX_{C} = 9({R^{2} + R^{2} + \frac{X_{C}^{2}}{9} - 2RX_{C})$

Solving the above eqn:

$X_{C} = 4R$

6 0

3 years ago

I need the named chemical compounds

NemiM [27]

Answer:

1 Acetaldehyde C2H4O

2 Acetamide C2H5NO

3 Acetic acid CH3COOH

4 Acetone C3H6O

Explanation: These are the only ones I know

7 0

3 years ago

Select the correct equations that show that the gravitational potential energy of a 1000-kg boulder raised 6 m above ground leve

wel

Answer:

$U = mgh$

Explanation:

The gravitational potential energy of an object is defined as:

$U=mgh$

where

m is the mass of the object

g is the gravitational acceleration

h is the height of the object above a reference level (usually, the ground)

For the boulder in the problem,

m = 1000 kg

g = 10 N/kg

h = 6 m

Substituting,

$U=(1000)(10)(6)=60,000 J$

6 0

4 years ago