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Answer:

Before it strikes the tree:

KE = 1/2 m v^2 = 1/2 * 30 kg * (200 m/s)^2

This KE would be 6.0E5 Joules

30 kg would about 66 lbs - obviously too heavy

You might consider 30 mg = .03 kg (still quite heavy)

KE = 1/2 * .03 kg * 40000 m.s^2 = 600 J       more realistic

Answer:

Alpha decay is the least penetrating. This is because the Alpha particle produced during the decay process is relatively large and low in energy thus it is easily 'blocked' and does not travel far through space.

Explanation:

The reasoning in the passage is : ( C ) The spots are the result of interference, which happens with waves but not particles

Light passed through a slit and projected onto a screen will form a pattern which is very visible and the pattern might have dark spots if there is some form of interference. Interference is present in waves and not particles.

Hence we can conclude that the reasoning in the passage is The spots are the result of interference, which happens with waves but not particles

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probabilityAnswer:

2/27

Explanation:

The elk can not be eaten so we remove that from the probablity

so we have x/18

songbird = 4/18

mice = 6/18

4/18*6/18 = 2/27

Answer: B

Explanation: The wavelength determines color. The wavelength is measured from crest to crest.

Answer:

8

Explanation:

According to the 10% law of energy transfer,

only about 10% of energy will be transferred to

the successive level from the previous trophic

level. Therefore according to this law carrot will

have the highest energy level as it is present at

the lowest trophic level.

Then it will transfer 10% of its consumed energy

to the rabbit and then snakes will get 10%

energy of rabbit after consuming it. Therefore if

the energy amount is given it can be calculated

by dividing it by 10 for upper trophic level.

So if a rabbit receives 80 calories of energy

from eating carrots it will pass only 8

(80/10=8) calory of energy on to a snake.

Therefore the correct answer is 8 calories

Answer:

C always

Explanation:

The force of friction between the object and the surface decrease immediately after the object starts to move.

The force preventing solid surfaces, fluid layers, and material components from sliding past one another is known as friction.

The definition of static friction is: The resistance people feel when they attempt to move a stationary object across a surface without actually causing any relative motion between their body and the surface they are moving the object across.

The resistance that is formed between any two items when they are sliding against one another is known as sliding friction.

It is experimentally proved that the force of friction between the object and the surface decrease, immediately after the object starts to move.

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Answer:

For every force there is an equal and opposite reaction force.

For instance, if one wants to find the acceleration of a person standing on a scales, he uses the force exerted by the scales on the person,

One doesn't consider the reaction force of the person on the scales.

Likewise for the force of the sun on the earth

m v^2 / R = G M m / R^2 descibes the force acting on the earth to produce the centripetal acceleration of v^2 / R

The sun experiences the same centripetal acceleration as the earth, but since the mass of the sun is about 333,000 times the mass of the earth the acceleration can be ignored for most purposes.

When a satellite experiences an acceleration of v^2 / r, the earth is undergoing the same centripetal acceleration. However since the mass of the earth is much greater than that of a satellite and the centripetal acceleration of the earth is ignored.

Answer:

KE = 1/2 M V^2 = 35 kg / 2 * (10 m/s)^2

KE = 17.5 * 100 kg m^2 / s^2 = 1,750 Joules

(B) is the correct answer

Answer:

Claim 2

Explanation:

Australia's skin cancer rate is so high because of the climate and the weather in their area. It is also because since australia is on the bottom of the globe, the continent recieves higher UV radiation.

Thanks for the brainliest!

1.Australia has one of the highest rates of skin cancer in the world. This is due largely to our climate, the fact that many of us have fair skin that isn't really suited to such harsh conditions, our proximity to the equator (high UV levels) and our social attitudes and love for the outdoors.

2.Australia's unusually harsh sunshine results mainly from its location in the Southern Hemisphere. The elliptical orbit of the Earth places the Southern Hemisphere closer to the sun during its summer months than the Northern Hemisphere during its summer.

3.Basically, through migration, our two countries have been populated by many people with fair skin whose ancestors come from much less sunny climates. Lack of protective pigmentation leaves skin cells especially vulnerable to the DNA-damaging rays from the sun.20 Mar 2018

Answer:

150 j

Explanation:

K.E. = 1/2 m v ^2

      = 1/2 * 3 * 10^2  = 150 j

Parallel information system is when an old information system in shut down and a new system starts up right after the shut down.

An information system is a system in which information are passed or transmitted from one end to another especially from senders to receivers to achieve a particular goal.

Therefore, Parallel information system is when an old information system in shut down and a new system starts up right after the shut down.

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c it hink this because im geuss

Answer:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

Explanation:

The primary difference between momentum and kinetic energy is kinetic energy can cancel momentum.

The kinetic energy of an object is the energy possessed by the object due to its motion.

KE = ¹/₂mv²

where;

Momentum of an object is the measure of the rate at which a mass is moving.

P = mv

K.E = ¹/₂(P)v

Thus, the primary difference between momentum and kinetic energy is kinetic energy can cancel momentum.

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Answer:Answer is A:The energy from the waves of light coming from bright lights would add up and free an electron.

Explanation:

1. They collect evidence and make sure that the model can be used with reasoning to explain the evidence.

2. The energy from the waves of light coming from bright lights would add up and free an electron.

3. The spots are the result of interference, which happens with waves but not particles.

4. This is not something that waves do because they need a medium to travel through, while particles do not.

5. When the electromagnetic wave peaks overlap, a bright fringe forms.

I promise this is correct because i failed and this is what it said if this is ever wrong they must have changed the quick check

Answer:

If you meant the Periodic Table it's the alkaline-earth metal

beryllium (Be)

magnesium (Mg)

calcium (Ca)

strontium (Sr)

barium (Ba)

radium (Ra)

Explanation:

Answer: B, the speed of baseball pitch

Explanation:

The speed of a baseball pitch is an example of a measurement that considers velocity, therefore the correct answer is option B.

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second.

average speed = total distance /Total time

The speed of the baseball pitch is an example of the measurement of velocity.

The size of a  standard basketball is an example of the measurement of length.

similarly, option C and option d are unrelated to the measurement of the velocity.

The correct response is option B since a baseball pitch's speed is an example of a measurement that takes velocity into account.

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Answer:

Explanation:

Answer:

When air rises in the atmosphere it gets cooler and is under less pressure. When air cools, it's not able to hold all of the water vapor it once was. Air also can't hold as much water when air pressure drops. The vapor becomes small water droplets or ice crystals and a cloud is formed.

Explanation:

hope this helps.

Answer:

weight

Explanation:

this is because of the lighter the object the faster it will be affected

Answer:

Initial kinetic energy is transformed into potential energy.

What is the SI (metric) unit of FORCE?

with symbol ( N )

All the best !

Answer:

B, Newton,

Explanation:

B.  Newton defined as the Force which when applied to 1 Kg mass produces an acceleration of 1 m/s/s.

F = m * a.

Answer:

Our earth is situated in the Milky Way galaxy. The Milky Way galaxy is a type of spiral galaxy.

Explanation:

spiral galaxy

The Milky Way is a huge collection of stars, dust and gas. It's called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25,000 light-years away from the center of the galaxy.

Answer:

10 newtons to the right

Explanation:

the net force is the sum of all forces.

so let's say the force acting on the left of the object is negative and the force acting to the right is positive.

so:

30 - 20 = 10 newtons.

since the force is positive we can say that the net force is 10 newtons to the right

Answer:

Venus

Explanation:

It has the most atmospheric gas, and it’s made up of 96% of Carbon Dioxide and around 3.5% of molecular nitrogen.

I hope it helps! Have a great day!

Anygays-

Answer:

1.927  m/s^2

Explanation:

period = 2 pi  sqrt ( l/g)  

3.2   =  2 pi sqrt (.5/g) =1.927 m/s^2

Explanation:

D.

hope it's help

hi I'm new user

Answer:

D.

Explanation:

The answer should be D. Cause it makes more sense and the gamma decay process it goes from Unstable to stable.

I apologize if it is incorrect-
I hope it helps! Have a great day!

Anygays-