Home

Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Share & grow the world's knowledge!

We want to connect the people who have knowledge to the people who need it, to bring together people with different perspectives so they can understand each other better, and to empower everyone to share their knowledge.

What's your question?

AdminEnlightened

The phenomenon of a decrease in the amplitude of a wave as it passes through a medium is known as:

a) Diffractionb) Interferencec) Refractiond) Damping ✅

a) Diffraction
b) Interference
c) Refraction
d) Damping ✅

AdminEnlightened

What is the value of the acceleration due to gravity on the surface of the Earth approximately?

a) 9.8 m/s² ✅b) 3.0 x 10^8 m/sc) 6.67 x 10^-11 N·m²/kg²d) 3.14159

a) 9.8 m/s² ✅
b) 3.0 x 10^8 m/s
c) 6.67 x 10^-11 N·m²/kg²
d) 3.14159

AdminEnlightened

The process of converting alternating current (AC) to direct current (DC) is performed by which electrical device?

a) Capacitorb) Transformerc) Diode ✅d) Resistor

a) Capacitor
b) Transformer
c) Diode ✅
d) Resistor

AdminEnlightened

Which of the following color has the highest frequency in the visible light spectrum?

a) Redb) Bluec) Greend) Violet ✅

a) Red
b) Blue
c) Green
d) Violet ✅

AdminEnlightened

Energy is associated with the motion of particles in a substance is known as?

a) Kinetic Energyb) Potential Energyc) Thermal Energy ✅d) Chemical Energy

a) Kinetic Energy
b) Potential Energy
c) Thermal Energy ✅
d) Chemical Energy

AdminEnlightened

The measure of an object’s resistance to a change in its state of motion is known as?

a) Massb) Weightc) Momentumd) Inertia ✅

a) Mass
b) Weight
c) Momentum
d) Inertia ✅

AdminEnlightened

The SI unit of electric charge of the following is:

a) Voltb) Amperec) Coulomb ✅d) Ohm

a) Volt
b) Ampere
c) Coulomb ✅
d) Ohm

AdminEnlightened

Which law states that the total energy of an isolated system remains constant over time, regardless of any internal changes?

a) Law of Conservation of Massb) Law of Conservation of Energy ✅c) Law of Conservation of Momentumd) Law of Conservation of Charge

a) Law of Conservation of Mass
b) Law of Conservation of Energy ✅
c) Law of Conservation of Momentum
d) Law of Conservation of Charge

AdminEnlightened

Which particle in an atom has a positive charge of the following?

a) Electronb) Neutronc) Proton ✅d) Nucleus

a) Electron
b) Neutron
c) Proton ✅
d) Nucleus

AdminEnlightened

In which direction does the magnetic field lines around a current-carrying conductor point?

a) Inwardb) Outwardc) Parallel to the conductord) Perpendicular to the conductor ✅

a) Inward
b) Outward
c) Parallel to the conductor
d) Perpendicular to the conductor ✅

AdminEnlightened

Which law states that the pressure of a gas is inversely proportional to its volume, assuming the temperature remains constant?

a) Boyle’s Law ✅b) Charles’s Lawc) Gay-Lussac’s Lawd) Avogadro’s Law

a) Boyle’s Law ✅
b) Charles’s Law
c) Gay-Lussac’s Law
d) Avogadro’s Law

AdminEnlightened

The bending of light as it passes through a medium with a different refractive index is known as:

a) Reflectionb) Refraction ✅c) Diffractiond) Dispersion

a) Reflection
b) Refraction ✅
c) Diffraction
d) Dispersion

AdminEnlightened

Energy is stored in a stretched rubber band is known as?

a) Kinetic Energyb) Potential Energy ✅c) Thermal Energyd) Electrical Energy

a) Kinetic Energy
b) Potential Energy ✅
c) Thermal Energy
d) Electrical Energy

AdminEnlightened

The force (F) of attraction between any 2 objects is directly proportional to the product of their masses (m) and inversely proportional to the square of the distance between their centers,this statement refers to which law of physics?

a) Newton’s First Lawb) Newton’s Second Lawc) Newton’s Third Lawd) Universal Law of Gravitation ✅

a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Universal Law of Gravitation ✅

AdminEnlightened

Solve the equation 5 – 2x = 3x + 1.

a) x = 1 ✅b) x = 2c) x = 3d) x = 4

a) x = 1 ✅
b) x = 2
c) x = 3
d) x = 4

AdminEnlightened

If the area of a rectangle is 48 square units and its length is 8 units, what is its width?

a) 4 unitsb) 6 units ✅c) 8 unitsd) 12 units

a) 4 units
b) 6 units ✅
c) 8 units
d) 12 units

AdminEnlightened

(1/2) + (1/4) + (1/8) + (1/16).

a) 1/16b) 1/8c) 1/4d) 1/2 ✅

a) 1/16
b) 1/8
c) 1/4
d) 1/2 ✅

AdminEnlightened

If a square has a diagonal of length 10 units, what is the length of one side of the square?

a) 5 unitsb) 7 units ✅c) 8 unitsd) 10 units

a) 5 units
b) 7 units ✅
c) 8 units
d) 10 units

AdminEnlightened

Convert 2/5 to a percentage.

a) 0.2%b) 2%c) 20% ✅d) 200%

a) 0.2%
b) 2%
c) 20% ✅
d) 200%

AdminEnlightened

If y = 2x + 3 and z = 3x – 4, find the value of y when x = 5.

a) 9b) 13c) 17d) 21 ✅

a) 9
b) 13
c) 17
d) 21 ✅

1 … 20 21 22 … 27