Physics chapter 1

Question 1

Name the instrument used to measure length

Answer 1

A ruler

Question 2

What is the vernier calipers used to measure

Answer 2

They are used to measure the inner and outer breadth of rods and domains, and thickness of any sort of object

Question 3

Micrometer gauge use

Answer 3

It is used to measure even smaller dimensions than the vernier calipers

Question 4

name the two scales of the micrometer gauge

Answer 4

The circular circle and the main/sleeve scale

Question 5

What is the range of the micrometer screw gauge

Answer 5

The percision of the micrometer screw gauge is 0.01mm or 0.001cm

Question 6

The formula for volume of regular objects

Answer 6

Width x Height x Length

Question 7

How is the Displacement method used to measure volume.

Answer 7

1. Fill the graduated cylinder with adequate water.
2. The object has to be fully submerged in the water when place.
3. Record the volume of the water prior to submerging the object and label A
4. Record the volume after submerging the object and label B
5. Subtract the the reading A from B and that’s the volume of the object

Question 8

Formula for Density

Answer 8

Mass/Volume

Question 9

Why do some objects float on water

Answer 9

because their density is lower than water

Question 10

How does a submarine stay afloat on water

Answer 10

It uses ballast tans filled with compressed air.
When wanting to sink, they let the water into the tank which increases density and they sink, if they then decide to float they will push the water out and bounce back up due to the low density.

Question 11

Definition of density

Answer 11

The ratio of mass to volume of a substance

Question 12

What is an oscillation in a pendulum

Answer 12

A complete to and from motion from the bobs.

Question 13

What does the speed of the oscillation depend on

Answer 13

The speed depends on the length of the string, as the longer the string is the more time it takes to swing and the shorter the swing the faster.