Test 1 completed Flashcards
What is a moment
A moment of a force is a turning effect about a pivot
Environmental consequences of burning coal
-Non-renewable
-release of CO2 contributes to global warming
- damage to environment by mining
Renewable
wind, solar, biofuel
Non-renewable
fossil fuels and nuclear fuels
Explain how a gas exerts pressure on the walls of its container
Pressure is caused by molecules hitting the walls, changing the momentum and so causing a force. The pressure is the force per unit area on the walls of the container.
How the final pressure compares with p2 when the temperature of the
gas increases during compression.
Increases. Gains more kinetic energy. More collisions. Greater rate of change in momentum.
IIU,DMM,RRV
Last one is the smallest
The dense people refraction rule
Dense people have small brains, referring to the space between the normal and refracted ray
Which colour is most refracted
Violet
Flemings left hand rule
Motors
Flemings right hand rule
Generators
State the proton number, nucleon number and the value of the charge on an α-particle.
2 protons, 4 nucleons, +2
State the proton number, nucleon number, electron number and the value of the charge on an beta-particle.
o protons, o nucleons, 1 electron, -1
How to remember the speeds of the different ionising radiation
She believes we (community) remember sun brighten
Beta decay?
plus one proton, one fewer neutron
0
1 β
