Matter and Energy - Semester Test

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is calculated by the formula: a = (final velocity - initial velocity) / time.

Front

How do you calculate acceleration?

Back

Acceleration (a) can be calculated using the formula: a = (v_f - v_i) / t, where v_f is final velocity, v_i is initial velocity, and t is time.

Front

What is the unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

What is the formula for calculating force using pressure and area?

Back

Force (F) can be calculated using the formula: F = Pressure (P) × Area (A).

Front

What is density?

Back

Density is the mass of an object divided by its volume. It is expressed as: Density = Mass / Volume.

Front

What is the unit of density?

Back

The unit of density is grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).

Front

How do you calculate density?

Back

Density can be calculated using the formula: Density = Mass / Volume.

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant figures in a measurement?

Back

To determine significant figures, count all non-zero digits, any zeros between them, and trailing zeros in a decimal number.

Front

What is the principle of hydraulic systems?

Back

Hydraulic systems operate based on Pascal's principle, which states that pressure applied to a confined fluid is transmitted undiminished in all directions.