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k0ka [10]
3 years ago
9

What purpose does a female pine cone serve?

Physics
2 answers:
erma4kov [3.2K]3 years ago
7 0

protects the seeds until it matures

Dimas [21]3 years ago
5 0
The answer is <span>It protects the seed until it matures.

Through the process of elimination:
- </span><span>It protects the seed until it matures. YES. A female pine cone the unfertilized seeds until they become mature. Then, the cone opens and seeds fall out of the cone.

</span><span>- It makes food for the adult plant. NO. The food of plants in made of green leaves that contain chlorophyll in the process of photosynthesis.
- It allows for photosynthesis to occur. NO. The cones have nothing to do with photosynthesis but they are responsible for reproduction.
- It acts as an object to attract birds. NO. The birds look for colourful flowers while cones are woody.
- It serves as an ornamental object on the tree. NO. Every part of plants has more important function than serving as an ornamental object.</span><span>

</span>
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if the separation between two masses is doubled, does the gravitational force between them increase or decrease? By what factor?
docker41 [41]

Answer:

increase by a factor of 4.

Explanation:

If the separation distance between two objects is doubled (increased by a factor of 2), then the force of gravitational attraction is decreased by a factor of 4 (2 raised to the second power).

3 0
4 years ago
A hockey pack is set in motion across a frozen pond. If the ice friction and air resistance are neglected, the force required to
Reil [10]

Answer:

A) Zero newtos

Explanation:

To solve this exercise, let's use Newton's first and second law, in the first law it is established that every body is at rest or moving with constant speed if the external forces are zero. In the second law it is determined that the sum of the force is proportional to the acceleration of the body.

Let us apply our case, the body is at constant speed which implies that the sum of all external forces is zero. In addition, there is no friction, so we do not need a force that counteracts them.

Consequently, the force applied must be zero.  

3 0
4 years ago
What direction is the net force on a falling skydiver before she reaches terminal velocity?
GarryVolchara [31]

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The net force and the acceleration on the falling skydiver is upward

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8 0
4 years ago
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum speed of 2.0 m/s and a maximum accele
JulsSmile [24]

Answer:

The amplitude of the wave is 0.02 m.

Explanation:

Given that,

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Put the value into the formula

\omega=\dfrac{200}{2.0}

\omega=100\ rad/s

We need to calculate the amplitude of the wave

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v_{max}=A\omega

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A=\dfrac{2.0}{100}

A=0.02\ m

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8 0
4 years ago
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4 0
3 years ago
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