Ch #6, #8, #9, #10, #11 Calculations

Question 1

What is the equation for kinetic energy?

Answer 1

Ek = 1/2 x mass x speed^2

Question 2

What is the equation of g.p.e.?

Answer 2

g.p.e. = mass x gravity x the change in height

Question 3

What is the equation for power?

Answer 3

Power = Work/Time

Question 4

How do you calculate work?

Answer 4

Work = Force x Distance
OR
Change in energy

Question 5

How do you calculate efficiency?

Answer 5

Useful energy/toal energy

Question 6

How do you calculate the percentage efficiency?

Answer 6

useful energy / total energy x 100

Question 7

How do you calculate between Kelvin and Celcius?

Answer 7

Temp. of Kelvin = Clecius temp. + 273

Question 8

What is the equation for the relationship between preassure and volume of a gas at constant temp.?

Answer 8

P1 V1 = P2 V2

Question 9

What is the equation for specific heat capacity?

Answer 9

specific heat capacity = energy required / mass x temp. increase.

Question 10

How do you represent celcius temp.? (In a symbol).

Answer 10

a zero with a dash through it.