FlashCards
What is meant by inelastically Deformed
The spring will not go back to its original length when the force acting upon it is removed
What shows that some thing is moving at a constant speed on a graph
It’s a straight line
Describe how speed affects braking distance
As speed increases,braking distance changes dramatically as well
Why are iron fillings attracted to a bar magnet?
Iron is magnetic
What shape are the magnetic field lines around the wire?
Circular
What is true for a longitudinal wave
They transfer energy
Give a reason why some one carrying equipment increase the work done when climbing up a ladder.
As it adds more force required to move,therefore making it harder to go up
Write down the equation that links gravitational field strength mass and weight
Weight=mass x gravitational field strength
How does the em ( electromagnetic spectrum) go in order
Radio waves,microwaves,infrared,visible light,ultraviolet, x-rays,gamma rays
Light changes direction when it enters the glass prism.What name is given to this process?
Refraction
Write down the equation that links frequency wave length and wave speed
Wave speed=frequency x wavelength
A student investigated how the acceleration of a trolley is affected by the force acting on the trolley.Describe a method the student could use.
1.gather materials
2.set the trolley on the track
3.apply different weights to create varying forces
4.measure the time it takes the trolley to travel a set distance for each force
5.calculate the acceleration
6.record the force and corresponding acceleration in a table
7.plot force vs acceleration to see the friendship
What is Newton’s first law
If an object stays at rest will remain at rest,and an object in motion will remain at the same speed and direction unless acted upon by an external force.
What is Newton’s first law
If an object stays at rest will remain at rest,and an object in motion will remain at the same speed and direction unless acted upon by an external force.
What is hookes law
The force exerted on a spring is directly proportional to amount it’s stretched or decompressed from its rest position
What is Newton’s third law of motion
When ever two objects interact,they exert equal and opposite forces on each other
Required practical.
Explain how to the wave speed of a wave using a ripple tank.
You will need a stop watch and a ruler
To measure the frequency you will need to measure the amount of waves passing through a point in ten seconds,then divide by ten
To find the wave length measure the distance between ten waves using the ripple tank snd then divide by ten.After all this you can find the wave speed by using thr equation wave speed=frequency x wavelength
Required practical
How to calculate speed of waves on a string
Extra equipment needed: ruler,frequency generator
The frequency should be given in the frequency generator.
To find the wavelength yoy measure several loops with a metre ruler then divide by the number of loops.
Then find the wave speed by using thr equation wave speed=frequency x wave speed
