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3 years ago

The diagram below shows four coastline locations on Earth with respect to the moon at a given time.

Physics

2 answers:

enyata [817]3 years ago

4 0

4)Both B and D.This happens becaus3 at the ceryain time, A experiences a flood tide causing the waters to come near it.And since B and D are the closest coastlines they are affected the most.

Sindrei [870]3 years ago

4 0

Answer:

The answer is actually Both A and C. Just took the test and went with the answer below (both B and D) and it was wrong.

Explanation:

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A running student has half the kinetic energy that his brother has. The student speeds up by 1 m/s, at which point he has the sa

hoa [83]

Answer:

V = (√2) + 1) m/s

Explanation:

Let the mass and speed of the running student be M and V respectively.

We are told that when he speeds up by 1 m/s, he has the same kinetic energy as his brother.

Thus, his speed at which he mow has the same kinetic energy as his brother is (V + 1) m/s

Now, we are told that the mass of the student is twice as large as that of his brother. Thus, his brother's mass is; M/2

Since kinetic energy is given by the formula K.E = ½mv²

Therefore, since we want to find the original speed of both students and that the initial condition says that the running student had half the kinetic energy of the brother, we now initial condition as;

½MV²= ½(½(M/2)V²) - - - - (eq 1)

Since he has sped up by 1 m/s, and has a kinetic energy now equal to that of his brother, we have;

(½M(V + 1)²) = (½(M/2)V²) - - - - (Eq2)

Dividing eq 1 by eq 2 gives;

V²/(V + 1)²= 1/2

Taking square root of both sides gives;

V/(V + 1) = 1/√2

Cross multiply to give;

(√2)V = V + 1

(√2)V - V = 1

V((√2) - 1) = 1

V = 1/((√2) - 1)

Simplifying this using surfs gives;

V = [1/((√2) - 1)] × ((√2) + 1))/((√2) + 1))

V = ((√2) + 1))/1

V = (√2) + 1) m/s

8 0

3 years ago

Imagine that you are immersed under a beautiful cosmic meteor shower. Which

katrin2010 [14]

Answer:

binoculars

Explanation: I am taking astronomy

8 0

2 years ago

Which are the most common producers in aquatic ecosystems?

Aleksandr-060686 [28]

Answer:

b -algae

Explanation:

The most common producers in aquatic ecosystems are the algae. They are called phytoplanktons.

In the food web and food chain of aquatic ecosystems, they usually set out with the algae.
These algae are called phytoplanktons.
They are the producers in all aquatic ecosystem.
Phytoplanktons consists of algae and cyanobacteria.
Just like plants on land, phytoplanktons manufacture food in an aquatic ecosystem.

5 0

3 years ago

Hurry!!!!!!!!!!!!!!! Match the terms to the correct descriptions.

Rashid [163]

This can be either kinetic or potential and has to do with the energy of position and motion of an energy- This is related to mechanical energy.It is so because mechanical energy is the sum total of kinetic and potential energy.

This is radiant energy from the sun;it is the only kind of energy we can see with our eyes-It is related to light energy which consists of white light along with its seven colors and these are also electromagnetic radiations.

This is the energy that is transferred by the movement of electrons through a conductor;the electrons create a current-This is related to electric energy.

This type of energy is often found in things like batteries or food-This is related to chemical energy .It is chemical energy which is converted to electrical energy in battery.

This type of energy travels through vibrations on waves-This is related to sound energy which travels in a medium in the form of compressions and rarefactions.

This type of energy is found in the nucleus of an atom-This is related to nuclear energy.For instance the energy produced during nuclear fusion and fission from unstable nuclei.

This is the term used when one type of energy changes from one form to another-This is related to energy conversions.

This type of energy is stored energy;it can be increased by getting into a higher position and/or stretching an object such as a rubber band-This is related to potential energy .It is the energy gained by a body due to its position or change in configurations.

This type of energy can be transferred in three different ways i.e conduction,convection and radiation-We know that heat is transferred in three different ways mentioned above and heat is nothing else than transferred thermal energy.Hence, it is related to thermal energy.

This has to do with the speed of an object and how much mass it has;basically how the how the object is moving-This is related to kinetic energy which is the energy gained by a body due to its motion.

Mathematically it is written as

$kinetic\ energy =\frac{1}{2} mass*[velocity]^2$