Physics (4th)

Question 1

The measure of the force that can cause an object to rotate about an axis.

Answer 1

Torque

Question 2

Torque is also called a?

Answer 2

Moment of a force

Question 3

In torque, the force applied to the body should be __________ to the moment arm or lever arm in order for torque to take place.

Answer 3

Perpendicular

Question 4

This is the perpendicular distance from the axis of rotation to the line of action

Answer 4

Lever arm

Question 5

Lever arm is also called a?

Answer 5

Moment arm

Question 6

What is the symbol for torque and its unit?

Answer 6

T
N.m

Question 7

Torque and force has a?

Answer 7

Direct relationship

Question 8

Torque and lever arm/moment arm has?

Answer 8

Direct relationship

Question 9

Force and lever arm/moment arm has?

Answer 9

Inverse/indirect relationship

Question 10

If it rotates counter-clock wise it is?

Answer 10

Positive torque

Question 11

If it rotates clock wise it is?

Answer 11

Negative torque

Question 12

This is commonly used term in sports. An object with ______ is going to be hard to stop

Answer 12

Momentum

Question 13

What is the symbol for momentum?

Answer 13

small “p”

Question 14

What is the unit of momentum?

Answer 14

kg.m/s or N.s (Newton seconds)

Question 15

Momentum is a vector or scalar quantity?

Answer 15

Vector

Question 16

mass, velocity, and momentum has a?

Answer 16

Directly proportional/direct relationship

Question 17

Mass and velocity has?

Answer 17

Inverse relationship/indirect

Question 18

Momentum can be applied in real life like?

Answer 18

car safety.

Question 19

This is the amount of force applied in certain amount of time to cause a change in momentum

Answer 19

Impulse

Question 20

What is the symbol for impulse?

Answer 20

Big letter “I”

Question 21

What is the unit for impulse?

Answer 21

Kg.m/s or Ns

Question 22

What is the real life application of impulse?

Answer 22

Seat belt
Airbag

Question 23

In a collision, an object experiences a force for a specific amount of time that results on a change in momentum. The results of the force action for the given amount of time is that the object’s mass either speeds up or slows down (or changes direction).

Answer 23

Impulse-momentum theorem

Question 24

a substance that continually deforms (flow) under an applied shear stress or external force.

Answer 24

Fluid

Question 25

Is concerned with the motion of the bodies under the action of forces including special case when the body remains at rest.

Answer 25

Mechanics

Question 26

it is the field in physics that studies the motion and properties of static fluids.

Answer 26

Fluid mechanics

Question 27

A material defined as the ratio of its mass(m) and volume(v).

Answer 27

Density

Question 28

What is the unit for density?

Answer 28

kg/m^3 (m/V)

Question 29

A substance is defined as the ratio of the density of the substance and the density of water at 4 degrees celsius.

Answer 29

Specific Gravity (SG)

Question 30

SG dont have a

Answer 30

unit

Question 31

Formula for SG is?

Answer 31

psub/pwater (Density of substance / density of water [1g/ml or 1/cm^3)

Question 32

This is known for as the amount of force applied per unit area

Answer 32

Pressure

Question 33

What is the unit for pressure?

Answer 33

N/m^2 or Pa

Question 34

"If an external pressure is applies to a confined fluid, the pressure at every point within the fluid increases by the same amount"

Answer 34

Pascal's Principle

Question 35

What are the types of flow?

Answer 35

Laminar and turbulent flow

Question 36

It's a smooth flow?

Answer 36

Laminar flow

Question 37

It is chaotic flow?

Answer 37

turbulent flow

Question 38

When an object is completely is partially immersed in a fluid exert an upward (Buoyant) force on the object that is equal to the weight of the fluid displaced by the object.

Answer 38

Buoyancy and Archimedes' Principle

Question 39

In fluid dynamics, the continuity equation states that the rate at which mass enters a system is equal to the rate at which mass leaves the system; plus the accumulation of mass within the system.

Answer 39

Equation of Continuity

Question 40

Increasing the lever arm will result to?

Answer 40

Increase of torque

Question 41

The impulse-momentum relationship is direct result of?

Answer 41

Newton's second law

Question 42

This is the study of fluids in motion?

Answer 42

Fluid dynamics