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3 years ago

If a 2 kg ball is traveling at a speed of 4 m/s, what is its kinetic energy?

Biology

1 answer:

MariettaO [177]3 years ago

6 0

Answer:

Option D is the correct answer.

Explanation:

It is given that a 2 kg ball is traveling at a speed of 4 m/s, so we have to find its kinetic energy.

KE = 1/2 mv²

KE = 1/2 × 2×(4)²

KE = 1/2 × 2×16

KE = 16 J

Some information about Kinetic Energy.

Kinetic Energy is the energy an object has because of its motion. It is directly proportional to the velocity of the particle and its mass. Kinetic energy is given by,

KE = ½mv²
It occurs due to the motion of the particle.
If a particle at rest position, then the kinetic energy will be zero because that particle won't be accelerating.

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Homogenous means of the same kind or species. a. True b. False

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Answer:

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The word homogenous means "of same kind". For example, homogeneous mixture is the mixture which has identical composition throughout the mixture.

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A brown-eyed man with a blue-eyed mother marries a brown-eyed woman with a blue-eyed father. What is the probability that their

almond37 [142]

This is based on my assumption that brown is dominant over blue.

Since both parent have parents who are homo_zygous recessive, this tells us that both parents will be hetero_zygous.

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Genotypic

BB : Bb : bb

1 : 2 : 1

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2 years ago

DRY MASS OF CORN SEEDLINGS GROWN UNDER DIFFERENT CONDITIONS

PIT_PIT [208]

Answer:

See the answer below

Explanation:

(a) One of the inorganic sources of new plant mass for the light-grown plants is the atmosphere. The carbon in the form of carbon dioxide in the atmosphere is sequestrated into the body of the light-grown plants through a process known as photosynthesis. During this process, the inorganic carbon dioxide becomes fixed into the body of the plant through a series of steps that include both light-dependent and light-independent. The overall equation of the process is as below:

$6CO_2 + 6H_2O + Light --> C_6H_1_2O_6 + 6O_2$

As more plant mass is being gained by photosynthesis, some of the gained mass is also being lost to energy generation through a process known as respiration. Respiration is like the complete opposite of photosynthesis but a gain in mass is still possible because the rate of photosynthesis is more than the rate of respiration in the light-grown plants.

(b) The chemical reaction that can be held responsible for the decrease in mass of the dark-grown plants is respiration. Some of the mass is lost to energy generation and this mass cannot be recouped by adequate photosynthesis due to light limitation. The energy is needed to metabolic processes that would keep the plants alive. The equation of respiration is as below:

$C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + Energy$

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3 years ago