Which of the following objects have gravitational potential energy?
A) a diver standing on a diving platform.
B) A hockey puck gliding across the ice.
C) an archers bow that is drawn back.
D) A runner waiting on the starting blocks.

Answer:

5) Displacement = +3.125 m

Displacement is in the same direction as the force vector.

6) Force = -53.89 N

Force is in an opposite direction relative to the displacement.

Explanation:

5) We are given;

Force; F = 160 N.

Workdone; W = +500 J

Now, formula for workdone is;

W = Force × displacement

Thus, displacement = Work/force

Displacement = 500/160

Displacement = +3.125 m

Thus, displacement is in the same direction as the force vector.

6) We are given;

Displacement; d = 18 m.

Workdone; W = -970 J

Like in the first answer above,

Workdone = Force × Displacement

Thus;

Force = Workdone/Displacement

Force = -970/18

Force = -53.89 N

Since force is negative and displacement is positive, it means force is in an opposite direction relative to the displacement.

Answer:

Friction. Have a great day! Think positive <3

Answer: Friction

Explanation: It makes sense

Answer:

Potential energy is the energy that exists by virtue of the relative positions (configurations) of the objects within a physical system.

This form of energy has the potential to change the state of other objects around it, for example, the configuration or motion.

Various forms of energy can be grouped as potential energy.

Each of these forms is associated with a particular kind of force acting in conjunction with some physical property of matter (such as mass, charge, elasticity, temperature etc).

For example, gravitational potential energy is associated with the gravitational force acting on object's mass; elastic potential energy with the elastic force (ultimately electromagnetic force) acting on the elasticity of a deformed object; electrical potential energy with the coulombic force; strong nuclear force or weak nuclear force acting on the electric charge on the object; chemical potential energy, with the chemical potential of a particular atomic or molecular configuration acting on the atomic/molecular structure of the chemical substance that constitutes the object; thermal potential energy with the electromagnetic force in conjunction with the temperature of the object.

For an example of gravitational potential energy, consider a book placed on top of a table.

To raise the book from the floor to the table, work must be done, and energy supplied. (If the book is lifted by a person then this is provided by the chemical energy obtained from that person's food and then stored in the chemicals of the body.) Assuming perfect efficiency (no energy losses), the energy supplied to lift the book is exactly the same as the increase in the book's gravitational potential energy.

The book's potential energy can be released by knocking it off the table.

As the book falls, its potential energy is converted to kinetic energy.

When the book hits the floor this kinetic energy is converted into heat and sound by the impact.

Explanation:

Answer:

potential energy is basically stored energy

Explanation:

Answer:

a) Equation for spring constant k is [tex]k = \frac{2E}{e^2}[/tex]

b)Equation for the extension squared is [tex]e^2 = \frac{2E}{k}[/tex]

(c) Equation for the extension e is [tex]e = \sqrt{\frac{2E}{k} }[/tex]

Explanation:

Given;

[tex]E = \frac{1}{2} ke^2[/tex]

where;

E is the elastic potential energy

k is the spring constant

e is the extension of the spring

a) Equation for spring constant k is given as.

[tex]E = \frac{1}{2} ke^2\\\\ke^2 = 2E\\\\k = \frac{2E}{e^2}[/tex]

(b) Equation for the extension squared e2;

[tex]E = \frac{1}{2} ke^2\\\\ke^2 = 2E\\\\e^2 = \frac{2E}{k}[/tex]

(c) Equation for the extension e;

[tex]e^2 = \frac{2E}{k} \\\\e = \sqrt{\frac{2E}{k}}[/tex]

Answer:

The answer is B. Silver

Explanation:

I took AP3X quiz.

Answer:

0.05m

Explanation:

Given parameters:

Force constant of the spring  = 40000N/m

Potential energy  = 42J

Unknown:

Extension  = ?

Solution:

To solve this problem, use the expression below:

           E.PE  = [tex]\frac{1}{2}[/tex] k e²  

k is spring constant

e is the extension

              42  =  [tex]\frac{1}{2}[/tex]  x 40000 x e²  

               e  = 0.05m

Answer:

42 Joules

Explanation:

Given that a force of 6.0 Newtons is applied to a block at rest on a horizontal frictionless surface over a 7.0 meter span. How much energy is gained by the block?

The parameters given are:

Distance covered = 7.0 m

The force = 6.0 m

The formula for work done is the product of force and distance. That is,

Work done = force × distance

Where work done is the same as energy.

Energy = force × distance

Energy = 6 × 7

Energy = 42 Joules.

Therefore, the energy gained by the block is 42 Joules.

Gravity influenced the formation of the solar system, with the planets orbiting the sun.

Gravitational force is force of attraction between two masses. Gravitational force(F) between two bodies is directly proportion to the product of masses(m₁,m₂) of two bodies and inversely proportional to square of distance(r) between them. mathematically it is written as,

F [tex]\alpha[/tex] m₁.m₂

F [tex]\alpha[/tex] 1/r²

F = G m₁,m₂÷r²

where G is gravitational constant, whose value is 6.6743 × 10⁻¹¹ m³ kg-1s⁻².

Force is expressed in Newton N in SI unit. its dimensions are [M¹L¹T⁻²].

According to Kepler's first law of motion, every planet is moving in an elliptical orbit with sun has situated at one of the foci of the orbit.

when a planet moves in the orbit around the sun, it moves in a stable orbit. in this orbit , centripetal force is equal to centrifugal force, in this case centripetal force appears as gravitational force. Means Gravitational force between sun and planet balances the centrifugal force which is outwards. In such a way gravity influenced the formation of the solar system.

Hence gravity plays crucial role in the formation of solar system.

To know more about Gravity :

https://brainly.com/question/14874038

#SPJ3.

Answer:

16.67 kg

Explanation:

Acceleration = 3 m/s^2

Force = 50 N

Force = mass * acceleration

mass = force / acceleration

mass = 50 / 3

mass = 16.67 kg

Answer:

energy is converted in one form to another

Explanation:

please give brainlest need 3 more

The full question is found in the image attached

Answer:

Densities

Explanation:

When we talk about density, one of the things that come to our mind is actually how heavy something is.

If i have substances that possess different densities, i will notice that i can not really mix them because they will separate and the heavier substance will be at the bottom while the lighter substance will be at the top.

Hence the two substances separated due to difference in density.

Answer:

36km/h = 10m/s

Explanation:

That's the formula to convert

Answer:

Three, but see below.

Explanation:

You can be certain of three, but that may not be true at all. The only way to know for certain is to put it into scientific notation.

4.05 * 10^5 would be three, but other answers are possible. For example

4.050 * 10^5 would have 4.

Answer: Will not accelerate.

Explanation: When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.

Answer:

Assuming that you meant the final velocity of 50 m/s was reached in 10 s, the answer would be 5 m/s^2.

Explanation:

[tex]V_{f} = V_{i} + at[/tex]

So we update that with the values that we have.

[tex]50 = 0 +a(10)[/tex]

then simplify that using algebra to solve for a and we get 5 m/s^2

Answer:

Gravity

Explanation:

Answer:

It is cause by radiation that's the answer

Explanation: the heat project sun rays towards the popcorn which causes it to pop

Answer:

A

Explanation:

I only think its A because of the gravity part...sorry im not good at explaining

Answer:

1. the rocks at the bottom of the aquarium

2.the fish and maybe the plants (if you use live plants)

3. fish interact with there no living things like how one would hide in the grass or something like that.

4. decorations (like a cave or fake house, tho the aquarium its self is a home)

5.they would die, and rot.

Explanation:

rocks are nonliving

fish are living things and so are plants

fish can hide in the plants

the fish can "live" in the decorations, but the aquarium itself is its home.

if something reaches the end of its life span it dies.

Answer:

Each force acting on the blob has another one to cancel it out

Explanation:

Answer:

well we know for sure that gravity is not affecting it because it is floating in the air.

Explanation:

Exploding planet or astroifd

Answer:

Crops drain the soil of nutrients

Explanation:

i took the test:) yw

Answer: c

Explanation:

Answer:

A-first law

B-third law

C-second law

Explanation:

Answer:

this is question is trying to trick you

Explanation:

it gives long words but all you need to know is just a few

the second law of reflection states that the angle of incidence equals to the angle of reflection

so if the angle of incidence = 30

then

the angle of reflection = 30

hope this helps,

please mark it brainliest

Answer:

Explanation:

b

Answer:

B(Ambassador)

Explanation:

The president appoints ambassadors to foreign countries to represent the United States.