A galvanometer works on the principle of the magnetic force acting on a current-carrying conductor placed in a magnetic field.

A hydraulic lift works on Pascal's law, which states that pressure applied to a confined fluid is transmitted undiminished in all directions.

The principle behind the working of a lever is Mechanical Advantage.

Sonar works on the principle of reflection of sound waves to detect objects underwater.

Transformers work on the principle of electromagnetic induction, where a changing magnetic field induces an electromotive force (EMF) in a coil.

An electric generator works on the principle of electromagnetic induction, where mechanical energy is converted into electrical energy by moving a conductor through a magnetic field.

An electric motor operates on the principle of the Lorentz force, which states that a current-carrying conductor in a magnetic field experiences a force.

A potentiometer measures voltage by balancing it against a known voltage, allowing for accurate voltage measurements.

The principle of conservation of energy states that energy can be transformed from one form to another but cannot be created or destroyed.

The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

The principle of superposition states that when two or more waves overlap, the resultant displacement is the sum of the individual displacements.

The principle of superposition states that when two or more waves overlap, the resultant displacement is the sum of the individual displacements.

The principle of superposition states that when two or more waves overlap, the resultant wave is the sum of the individual waves.

Bernoulli's Principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

Archimedes' Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.

Bernoulli's Principle states that an increase in the velocity of a fluid occurs simultaneously with a decrease in pressure.

Using Bayes' theorem, P(Disease|Positive) = (P(Positive|Disease) * P(Disease)) / P(Positive). Here, P(Positive) = P(Positive|Disease) * P(Disease) + P(Positive|No Disease) * P(No Disease). Calculating gives approximately 0.018.

The prevalence of the disease is given as 2%, which can be expressed as a probability of 0.02.

There are 13 hearts in a deck of 52 cards. Probability = 13/52 = 1/4.

Number of kings = 4. Probability = 4/52 = 1/13.

Number of queens = 4. Probability = 4/52 = 1/13.

There are 26 red cards in a deck of 52. Probability = 26/52 = 1/2.

There are 4 aces in a deck of 52 cards. Therefore, the probability P(ace) = 4/52 = 1/13.

There are 2 outcomes: heads or tails. Probability of heads = 1/2.

The possible outcomes for a sum of 7 are (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) which gives us 6 favorable outcomes. Total outcomes when rolling two dice = 6 * 6 = 36. Therefore, P(sum of 7) = 6/36 = 1/6.

The probability of obtaining a homozygous recessive offspring (aa) from a cross between two heterozygous parents (Aa x Aa) is 25%.

Possible combinations for sum of 7 = (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) = 6. Total outcomes = 36. Probability = 6/36 = 1/6.

The combinations to get a sum of 7 are (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) = 6 ways. Total outcomes = 36. Probability = 6/36 = 1/6.

Even numbers on a die: 2, 4, 6. Probability = 3/6 = 1/2.

Even numbers on a die = 2, 4, 6. Probability = 3/6 = 1/2.