half-term 5- equations

Question 1

What does Boyle’s law state?

Answer 1

• the higher the pressure, the smaller the volume

- pressure is inversely proportional to the volume

Question 2

Boyle’s law equation

Answer 2

P1 V1 = P2 V2 -Pa

Question 3

Equation for weight

Answer 3

mass x gravity -N

Question 4

Equation for force

Answer 4

mass x acceleration -N

Question 5

Equation for work done

Answer 5

force x distance -J

Question 6

Equation for speed

Answer 6

distance / time

Question 7

What is the rule for pressure?

Answer 7

small pressure: larger area

large pressure: smaller area

Question 8

Equation for pressure

Answer 8

force / area -Pascals

Question 9

What is the rule for pressure in a liquid?

Answer 9

• acts in all directions

- increases in depth

Question 10

What does Charles’s law state?

Answer 10

volume of gas varies directly with the absolute temperature at constant pressure

Question 11

Equation for Charles’s law

Answer 11

V1 / T1 = V2 / T2

Question 12

What is the principle of moment?

Answer 12

sum of clockwise moment = sum of anticlockwise moment

Question 13

Equation for moment

Answer 13

moment = force x distance -Nm

Question 14

Equation for density

Answer 14

mass / volume

Question 15

Experiment for density of a regular object

Answer 15

1. find mass of an object using electronic balance
2. fine the volume using a ruler. volume = l x b x h
3. density = mass / volume

Question 16

Experiment for density of an irregular object

Answer 16

1. find mass of an object using electronic balance
2. fill Eureka can with water, wait until start line is at the spout of the can
3. tie string around object and insert it into can
4. collect water displaced into a measuring cylinder
5. water displaced = volume
6. density = mass / volume