Physics cohort

Energy store(CEMENT KG)

Chemical

Elastic

Magnetic

Electrostatic

Nuclear

Thermal

Kinetic

Gravitational potential

Energy transfer(HOSE ME)

Heating

Other

Sound

Electrical current

Mechanical work done

Electromagnetic

Kinetic energy

Gravitational Potential energy

Mechanical working/Work done

W=Fd

Efficiency

Speed

s=d/t

Newton's 1st law

When the resultant force is zero, there is no acceleration; objects continue at a constant speed and in a constant direction or stay stationary.

Newton's 2nd law

When there is a resultant force, objects will change their motion. We call this an acceleration. It includes: a. speeding up b. slowing down c. changing direction

How to measure volume(By displacement)

Fill a measuring cylinder with water to a known volume. Submerge the object. The new water level minus the initial water level equals the object's volume.

How to show electrostatic charges by friction

Rub a polythene rod with a duster then put it near confetti and the confetti should attract to the rod.

How does friction create charge

Friction creates charge by transferring electrons between the surfaces of two different materials that are rubbed together.(duster loses electrons, rod gains electrons.)

What is electrical conduction in metals(in terms of free moving electrons)

As the electrons are free, They aren't bound to specific atoms and can move easily. When an electrical voltage is applied, these free electrons flow, creating an electric current.

Flow of electrons

In diagrams Positive to negative.

In real life Negative positive

Electrical charge

Q=It

Energy

E=QV or E=ItV

Voltage

V=IR

Power

P=IV

Work done

W=Fd

Weight

W=mg

Spring extension

F=kx

Wave speed

Human hearing

20Hz to 20000Hz

Magnetic field wire

Magnetic field Bar

Magnetic field coil