What happens when the forces acting on an object are equal and opposite?

C) The object will stay at rest or in equilibrium.

B) The object will change shape.

D) The object will increase in weight.

According to the table, which material is denser, Mild steel or Cast iron?

The table does not provide this information

What does pressure measure in the context of physics?

The ratio of force applied per unit area

What does the density of a body depend on?

The mass and volume of the body

The weight and height of the body

The color and shape of the body

The temperature and pressure of the body

What is a moment in physics?

A force that produces a turning effect

A force that increases pressure

How can you increase the turning moment of a lever?

By increasing the force applied

By decreasing the length of the lever

By shortening the distance from the pivot

What is necessary to maintain equilibrium when several forces are acting on an object?

The total clockwise moment must be equal to the total anticlockwise moment

All forces must be applied in the same direction

What happens when a mechanical system is in equilibrium?

C) Clockwise and anticlockwise movements are equal

A) It moves in one direction only

B) Clockwise movements are greater than anticlockwise movements

What is the moment of a force?

A) The product of the force and the distance from the point of reference

B) The sum of all forces applied

What does temperature measure?

The average heat of particles in a substance

The type of material a body is made of

The amount of heat energy in a body

The total amount of energy in a substance

What happens during conduction?

Heat is transferred from a warmer body to a cooler body when they are in direct contact.

Heat is transferred through empty space.

Heat is transferred through liquids and gases only.

Heat is transferred by electromagnetic waves.

The cycle of warming and cooling in liquids and gases, where warmer parts move to cooler regions.

The transfer of heat through direct contact of solid materials.

The movement of heat through electromagnetic waves.

The process where heat is transferred through empty space.

How does radiation differ from conduction and convection?

It can transfer heat through empty space without needing a medium.

It requires a medium like solids to transfer heat.

It involves the movement of liquids or gases.

It only occurs when materials are at the same temperature.

According to the key points, when can heat energy be transferred between two bodies?

When they are at different temperatures and in contact.

When they are at the same temperature.

Only through liquids and gases.

The force that opposes the motion between two surfaces in contact

The force that helps objects move smoothly over each other

The force that increases the speed of moving objects

The force that pulls objects towards the earth

What does the coefficient of friction (μ) represent?

The ratio of the force required to produce motion to the force pressing two materials together

What does the coefficient of friction, μ, represent?

The ratio of the force of friction between two bodies and the force that's pressing them together.

The speed at which one surface slides over another.

The temperature at which materials interact.

The weight of the materials involved.

What is the difference between static and kinetic friction?

Static friction occurs before movement starts, while kinetic friction occurs during movement.

Kinetic friction is always higher than static friction.

Static friction measures temperature, kinetic friction measures speed.

There is no difference; they are the same.

chapter11:Science and Engineering Quiz

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chapter11:Science and Engineering Quiz

60 questions

What are common units used in science and engineering?

What is the fundamental SI unit for mass?

Which unit is used to measure electric current?

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How much energy is transferred when 1 joule of work is done?

What are the SI units for mass?

What is the SI unit for temperature?

What is the SI unit for force?

What symbol is used to represent electric current?

What are the SI units for electric current?

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