What large gymnosperm is found in the tropics?

Answers

Answer 1

Answer: Gymnosperms are a plant group that share unique characteristics: they bear seeds however the seeds do not develop within an ovary. One large gymnosperm that grows in tropical regions, it is named as conifers. Conifers have about 558 living species. It is the most ecologically and economically essential group. Most conifers are trees which bear seeds within a cone.

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If gravity did not affect the path of a horizontally thrown ball, the ball would ____.
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Physics question WILL GIVE BRAINLIEST!!! A 1,600 kg train car rolling freely on level track at 16 m/s bumps into a 1.0 x 10^3 kg train car moving at 10.0 m/s in the same direction, and the two latch onto each other and continue together. What is their final speed?10 m/s
14 m/s
6.0 m/s
16 m/s

Answers

Answer:

$v'\approx 14\ m/s$

Explanation:

Linear Momentum

Two objects of masses and moving in a linear path at speeds and respectively have a total momentum of

$p=m_1v_1+m_2v_2$

When the objects collide, a change of conditions occurs and they start to move at different speeds. The necessary condition to find the after-colliding speeds is the conservation of linear momentum that states the total momentum of an isolated system doesn't change regardless of the internal interactions of the objects. Thus, the new momentum is

$p'=m_1v_1'+m_2v_2'$

And they must be the same, thus

$m_1v_1'+m_2v_2'=m_1v_1+m_2v_2$

We know both cars stick together after the collision, so the final speed is common to both, and the above formula becomes

$(m_1+m_2)v'=m_1v_1+m_2v_2$

Solving for v'

$\displaystyle v'=(m_1v_1+m_2v_2)/((m_1+m_2))$

Plugging in the values, we have

$\displaystyle v'=((1600)(16)+(1000)(10))/((1600+1000))$

$\boxed{v'=13.69\ m/s}$

Correct option (closest to the computed speed): 14 m/s

If a grocery cart with a mass of 16.5 kg accelerates at +2.31 m/s2 against a frictional force of -15.0 N, what is the applied force?

Answers

Call the applied force 'A'. (Clever ?)

The forces on the cart are 'A' forward and 15 N backward.

The net force on the art is (A-15) forward.

F = m a

Net forward force = (mass of the cart) x (its forward acceleration)

(A - 15) = (16.5) x (2.31)

A - 15 = 38.115

Add 15 to each side:

A = 53.115 newtons

2th Law of Newton:

$\vec{R}=m.a\n \n \vec{R}=\vec{F} -\vec{F_a}=m.a\n \n \vec{F}-15=16.5*2.31\n \n \vec{F}=38.115+15\n \n \boxed{\vec{F}=53.115 \ N}$

What is produced when calcium reacts with fluorine in a synthesis reaction

Answers

Calcium fluoride is produced. It is one Calcium atom bonded to two fluoride atoms. The Calcium atom receives one electron from one fluoride and a second electron from the second fluoride atom. As a result of receiving the two electrons, Calcium will have a negative charge. The two fluorides become positive from losing an electron. The positive and negative charge attraction keeps the atoms close together to form an ionic bond.

A box contains 9 new light bulbs and 6 used light bulbs. Each light bulb is the same size and shape. Meredith will randomly select 2 light bulbs from the box without replacement. What is the probability Meredith will select a new light bulb and then a used light bulb

Answers

Answer:

(9/35) = 0.257

Explanation:

Box contains 9 new light bulbs and 6 used light bulbs, total number of bulbs = 15.

Probability of selecting two bulbs; a new light bulb and then, a used light bulb in that order = [(probability of selecting a new bulb) × (probability of selecting a used bulb from the rest)] = [(9/15) × (6/14)] = (9/35) = 0.257

Final answer:

The probability that Meredith will select a new bulb and then a used bulb in sequential order without replacement is around 26%.

Explanation:

The question asks about the probability of selecting a new light bulb and then a used light bulb from a box containing 9 new light bulbs and 6 used light bulbs. Probability events like these are solved using multiplication rules of probability that each event is independent.

First, the probability of picking a new bulb is 9/15 (total bulbs are 15). If you pick one out, you don't replace it, so there are only 14 bulbs left. Thus, the probability of picking a used bulb now is 6/14. Hence the probability of both events happening in order is the multiplication of both, i.e., (9/15)*(6/14) = 54/210 = 0.257 or around 26%.

Learn more about Probability here:

brainly.com/question/32117953

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Objects that have value in themselves and that are also used as money is the definition for _____.a. commodity money
b. representative money
c. fiat money
d. money

Answers

Answer: The correct answer for the blank is- a. commodity money.

Commodity money can be described as a form of currency, which has an intrinsic value ( that is value of its own) as well as value (in the form of money) in their use.

For Example- gold, silver, grains serve as commodity money.

Objects that have value in themselves and that are also used as money is the definition for commodity money. Hope this helped :)

You check a barometer and observe that the air pressure has been dropping all day. Is tonight's weather more likely to be calm or stormy?

Answers

If you had been checking the barometer and observe that the air pressure has been dropping all day, tonight's weather more likely to be stormy. Stormy weathers have low pressure climate

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