SCI-101 Final Review PRACTICE

Front

What is the formula for calculating pressure?

Back

P = F/A, where P is pressure, F is force, and A is area.

Front

How do you calculate potential energy?

Back

Ep = mgh, where Ep is potential energy, m is mass, g is acceleration due to gravity (9.8 m/s²), and h is height.

Front

What are lubricants used for?

Back

Substances used to reduce friction between moving surfaces.

Front

What does a lever do?

Back

A lever is a rigid bar that rotates on a fixed hinge.

Front

How do you calculate force using mass and acceleration?

Back

F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the unit of pressure in the imperial system?

Back

Pounds per square inch (psi).

Front

What is the gravitational acceleration on Earth?

Back

Approximately 9.8 m/s².

Front

What is the potential energy of a 5 kg object at a height of 3 meters?

Back

147 J (calculated using Ep = mgh).

Front

What is the relationship between force, mass, and acceleration?

Back

Force is directly proportional to mass and acceleration (F = ma).

Front

What is the purpose of a hydraulic system?

Back

To transmit force through a fluid to perform work.