Electricity and Forces

What best describes static electricity?

A neutral object has an equal number of protons and electrons.

According to Ohm's Law, voltage is equal to current multiplied by ______.

What happens when two objects with opposite charges are brought near each other?

What is the relationship between power, voltage, and current?

Match the following terms related to forces with their descriptions:

Which of the following describes the principle of conservation of energy?

Kinetic energy is the energy possessed by an object due to its position.

The rate at which work is done or energy is converted is known as ______.

A car travels 100 kilometers in 2 hours. What is its average speed?

Define 'degrees of freedom' in the context of mechanical linkages.

Which of the following quantities is calculated using the formula: $\text{distance} = \text{speed} \times \text{time}$?

Electrical circuits can only be connected in series.

What is the primary function of an insulator in an electrical circuit?

The principle that explains why a ship floats, even though steel is denser than water, is ______'s principle.

A 12V battery is connected to a circuit with a resistance of 6 ohms. What is the current flowing through the circuit?

Explain the relationship between potential energy and kinetic energy in a swinging pendulum.

What energy transformation occurs in a hydroelectric power plant?

Increasing the resistance in a circuit will increase the current if the voltage remains constant.

The force that opposes the motion of an object is called ______.

If a machine is 40% efficient, what does this mean?

If a hair dryer operating at 120 V draws a current of 10 A and is used for 15 minutes each day, what is the energy consumed in Joules each week?

What type of energy resource is derived from the earth's internal heat?

Explain the working principle behind a hydraulic jack.

A box of 15 kg is deposited in a large basin containing salt water having a volumetric mass of 1.1 g/mL. The box causes a displacement of 12 L of water. Will the boex float or sink? (density of water is appoximately 1kg/L)

Bernoulli's principle states that as the speed of a fluid increases, the ______ within the fluid decreases.

A device has a signal that provides both a signal and its compliment. Using only this device, design a buffer that can take an arbitrary level of input and produce the same level output. List assumptions. HINT: This may be impossible. If so, demonstrate why.

Which term describes the ability of a mechanical system to move along independent axes?

If a material is resistive then its electrons do not flow freely within the metal because it is not subject to electrostatic forces.