Day 21 (physics)

Question 1

What is the equation for density?

Answer 1

density = mass/volume

Question 2

Write out the density equation, if we are to use it to find mass

Answer 2

mass = density x volume

Question 3

Write out the density equation, if we are to use it to find volume

Answer 3

volume = mass / density

Question 4

Give a unit for density

Answer 4

g / cm^3 or kg/m^3

Question 5

Give the equation for pressure over an area

Answer 5

pressure = force / area

Question 6

What is the unit for force?

Answer 6

N

Question 7

What is the standard unit for pressure?

Answer 7

Pa

Question 8

What is the value of atmospheric pressure?

Answer 8

100,000 pa

Question 9

What is the equation for pressure in a liquid?

Answer 9

Pressure = height x density x gravitational field strength

Question 10

What equipment do we use to find the volume of an irregular object?

Answer 10

Displacement can

Question 11

Which is the most stable element made in a star?

Answer 11

Iron

Question 12

What gas if the main component of a nebula cloud?

Answer 12

Hydrogen

Question 13

The temperature of the Suns is 6000K. What does the K stand for?

Answer 13

Kelvin

Question 14

When is the speed of a comet at a minimum?

Answer 14

When it is furthest from the Sun

Question 15

When is the speed of a comet at a maximum?

Answer 15

When it is closest to the Sun