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A pigeon is walking around the courtyard looking for food the pigeon walks 4.0 m West 2.5 M North 1.1 M and 7.3 m south what is the pigeons final displacement vector

Answer: C, supplements and drugs both undergo stringent government testing.

Explanation: took the unit test.

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Answer:

C

Explanation:

Answer:

Yes

Explanation:

The shape will affect the friction and the way the skateboard moves.

The answer is -i, trust me.

They're the same direction.

Answer:

the motion of the particles stays the same.

Answer:

The motion of the particles stays the same

Explanation:

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Answer:

A fired bullet

Explanation:

A fired bullet is faster than the speed of sound

A fired bullet has the largest momentum from the list of objects given. Hence, Option (a) is correct.

The product of a particle's mass and velocity is its momentum. Momentum is a vector quantity, meaning it has both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of change of momentum.

Mathematically,

Momentum of the object = mass × velocity.

Though mass of the bullet is less, the velocity of bullet is enormously high compere to  horse or a  football player. So, the product of mass and velocity, that is, momentum of a fired bullet is largest  among the list of objects given.

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B. The number of coils of wire around the core

Answer:

B.

Explanation:

The number of coils of wire around the core

Answer:

it's c

Explanation:

is the one that looks like an example of potassium

I took the test!

Answer:

x = 1474.9 [m]

Explanation:

To solve this problem we must use Newton's second law, which tells us that the sum of forces must be equal to the product of mass by acceleration.

We must understand that when forces are applied on the body, they tend to slow the body down to stop it.

So as the body continues to move to the left, it is slowing down. Therefore we must calculate this deceleration value using Newton's second law. We must perform a sum of forces on the x-axis equal to the product of mass by acceleration. With leftward movement as negative and rightward forces as positive.

ΣF = m*a

[tex]10 +12*sin(60)= - 6*a\\a = - 3.39[m/s^{2}][/tex]

Now using the following equation of kinematics, we can calculate the distance of the block, before stopping completely. The initial speed must be 100 [m/s].

[tex]v_{f}^{2} =v_{o}^{2}-2*a*x[/tex]

where:

Vf = final velocity = 0 (the block stops)

Vo = initial velocity = 100 [m/s]

a = - 3.39 [m/s²]

x = displacement [m]

[tex]0 = 100^{2}-2*3.39*x\\x=\frac{10000}{2*3.39}\\x=1474.9[m][/tex]

Answer:

Distance is 50m

Displacement is 0m

Explanation:

Distance is based on the amount of length you covered, regardless of where you end.

Displacement only considered where you started and where you ended, which is at the same spot in this case. Therefore, no displacement.

Answer:

self-contained, short-term light-source

Explanation:

Answer:

2m

Explanation:

The closer the objects are, the more gravitational force there is

Answer:

Sound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly.

Explanation:

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Answer:

The heat is transferred from the metal rod to the pizza dough.

Explanation:

An oven works on electricity. We know that according to the law of conservation of energy, energy is being transferred from one type to some some other type. It is not possible to create or form energy and also to destroy energy.

So in the oven when the oven is switched on to make a pizza, the electrical energy is converted into heat energy which bakes the pizza inside the oven.

When the oven is heated, the molecules inside the metallic rod vibrates and it transfers its kinetic energy to its neighboring atoms. This is how the entire rod gets heated up due to conduction from one point end to another. The heat is then flowed from the rod to the pizza through the surrounding air in the oven. The molecules in contact with the rod transfers the heat to the molecules in the surroundings. This process is called convection process.

This is how the heat is flowed and transferred from the rod to the pizza dough by conduction and convection process. Thus the temperature rises and it heats the pizza.

Answer:

insulin and glucagon, to regulate blood-glucose levels

Explanation:

Answer:

Surface

Explanation:

Rayleigh Waves—surface waves that move in an elliptical motion, producing both a vertical and horizontal component of motion in the direction of wave propagation. Particle motion consists of elliptical motions (generally retrograde elliptical) in the vertical plane and parallel to the direction of propagation.

Answer:

we need more info

Explanation:

Answer:

distance is 5+2 = 7

displacement is 5-2 =  3

Answer:

See the explanation below.

Explanation:

Solving the first image question:

C ) The resulting force is defined by Newton's second law which tells us that the sum of the forces on a body is equal to the product of mass by acceleration. That is, there must be a force that acts on a body to produce an acceleration. If there is no acceleration it is because there are no external forces or developed by the body. And if there is no acceleration the body moves at a constant speed, in a straight line, so the response is C.

For the second image, we must remember that weight is defined as the product of mass by gravitational acceleration.

W = m*g

where:

W = weight [N]

m = mass [kg]

g = gravity acceleration [m/s²]

Now we have

m = 50 [kg]

ge = Earth gravity acceleration = 10 [m/s²]

gp = Distant planet gravity acceleration = 4 [m/s²]

We = ge*m

We = 10*50 = 500 [N]

Wp =gp*m

Wp = 4*50 = 200 [N]

Therefore the answer is D

For the third image, The mass is always going to be preserved, regardless of where the body or object is in space, its weight is the only one that changes since the gravitational force is modified. That is, the mass on the moon and on Earth will always be the same.

m = 70 [kg]

First, we must calculate the acceleration, by means of the following equation of kinematics.

[tex]v_{f} =v_{o} +a*t[/tex]

where:

Vf = final velocity = 20 [m/s]

Vo = initial velocity = 0 (because stars from the rest)

a = acceleration [m/s²]

t = time = 4 [s]

20 = 0 + a*4

20 = 4*a

a = 5 [m/s²]

Now using Newton's second law which tells us that the total force acting on a body is equal to the product of mass by acceleration.

F = m*a

where:

F = force [N] (units of Newtons)

m = mass = 2 [kg]

a = acceleration = 5 [m/s²]

F = 2*5

F = 10 [N]

The body of Figure D, since a total force of 25 [N] to the left acts on it, in the rest of cases the force is zero or much less than 25 [N]

50 + 40 - 35 - 30 = F

F = 25 [N]

Answer:

The objects have opposite charges.​

Explanation:

The object when released are moving towards each other simply because they attract each other.

The objects have opposite charges conclusion is supported by this evidence. Option 4 is correct.

When the matter is put in an electromagnetic field, it has an electric charge, which causes it to experience a force. A positive or negative electric charge can exist.

Charges that are similar repel each other, whereas charges that are dissimilar attract each other. The term "neutral" refers to an item that has no net charge.

Two things are held in proximity to one another. When they are let go, they gravitate toward each other. This evidence supports the conclusion that the items have opposing charges.

Hence,option 4 is correct.

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Answer:

b

Explanation:

Answer:

a

Explanation:

because the crest and trough are the same length when together and they squeeze together making the length shorter for higher frequencies and are spaced apart when lower frequencies occur

Answer:

Matter is made up of very small particles called atoms. Atoms are the basic units of matter and the defining structure of elements.

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Answer:

Explanation:

Astronauts face a wide range of dangers when maneuvering in space. Collecting rock samples requires breaking apart rocks on the moon's surface, which requires tools. These tools are sometimes small hammers or other times special drills. All of this process means moving and using force to break these rocks apart and every single movement can cause a mistake which can lead to a piece of the suit ripping or a failure in the machinery. Since there is no oxygen on the moon the tiniest failure in the suit can lead to the death of the astronaut. Therefore, having backup safety precautions, and quick repair scenarios is a must when collecting rock samples on the moon.

Answer:

10m/s

Explanation:

Answer:

–735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Explanation:

The following data were obtained from the question:

Mass (m) of car = 782.10 kg

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Force (F) =?

Next, we shall determine the acceleration of the car. This can be obtained as follow:

Initial velocity (u) = 7.60 m/s

Final velocity (v) = 3.61 m/s

Time (t) = 4.23 s

Acceleration (a) =?

a = (v – u) / t

a = (3.61 – 7.60) / 4.23

a = –3.99 / 4.23

a = –0.94 m/s²

Finally, we shall determine the force experienced by the car as shown below:

Mass (m) of car = 782.10 kg

Acceleration (a) = –0.94 m/s²

Force (F) =?

F = ma

F = 782.10 × –0.94

F = –735.17 N

The negative sign indicate that the force is acting in opposition direction to the car.

Answer:

B.

Explanation:

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Answer:

B (student 1)

Explanation:

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