energy

what is potential energy?

energy thats stored (gravintaional energy is potential energy since its stored in an object that has the ability to fall)

what types of energy are there? Erm Nous Est Cooked Gyatt Skibidi Toilet Rizz Kai cenat

Elastic, Nuclear, Electric, Chemical, Gravitational, Sound, Thermal, Radiant, Kinetic

What is work?

The product of the force applied and the displacement, which leads to The transfer of energy (depends on the force applied and the displacement)

what is mechanical work?

when a force displaces an object in the direction of the force

what is the formula for work done?

W = ΔE

W= Fa x Δd / Fa x Δd x Cos

what is a joule?

1 kg m²/s² / Nxm

what happens when there is no work done?

when no work is done but a force or displacement is present

what is power?

the rate at which work is done (you more power by doing work quickly)

what is the formula for power and what is it measured in?

P= W/Δt, watts(w)

what is a watt?

1 kg m²/s^{3 also 1J/s}

what does kinetic energy depend on?

mas and speed

what formula is used for kinetic energy and what is it measured in?

EK= 1/2MV²

^{measured in joules (J)}

two objects with the same mass moving with the same velocity have what?

the same amount of kinetic energy

what will happen if 2 objects with the same mass are moving with different velocities?

the object moving faster will have more kinetic energy

what will happen if 2 objects with the same velocity have different masses

the object with more mass will have more kinetic energy

what is the formula for change in kinetic energy when an object that accelerating

∆Ek= Ek2 − Ek1,

∆Ek=1/2 mv₂²− 1/2 mv₁²

^{joules (J)}

What is gravitational potential energy?

objects that are located some height above the ground.

what formula is used for gravitational potential energy and what is it measured in?

∆Eg= mg∆h, joules(J)

what is a closed system?

a system were new energy cant come in or out

what is the law of conservation of energy?

energy cant be created or destroyed, only transferred from one another.

whats the formula for the law of conservation of energy and what is it used for.

E total intial = E total final

Eki + Egi = Ekf + Egf

speed/velocity and hight ( I hate this formula )

is energy transfer 100% efficient?

NO DUMB STUPID IDIOT GIRL (cus theres firction and thermal energy is released due to friction and deformation)

whats the formula for efficiency

efficiency= Eout/Ein x 100%

Eout is useful energy (the energy thats used/made) Ein is the total energy input (all the energy that was used to get the new energy)

what less Eout or Ein

Eout is ALWAYS less then Ein

what does it mean when work is positive?

the force and displacement have the same direction

what does it mean when the work is NEGITITVE?

the force and displacement have opposite direction

what does it mean when the work is zero

force and displacement are perpendicular or ones 0

why is there no work done when you write?

although in order to write a force must be applied, there is no displacement occurring. meaning that you would have a displacement of zero making there be no work done

WHAT DOES CAPACITY TO DO WORK MEAN??????

energy (use work forumla when findning)

what is work done by kinectic fricition

Wf = Ff x d (find force of gravity (fg) then find force of friction (ff) by mulpulyin the coffient of friction by Fn (fg)

What factors and how can you change in the power equation so that you get a high amount of power?

increase the energy and decrease the time