Category: Physics

What is an example of contraction? A contraction is a word made by shortening and combining two words. Words like can’t (can + not), don’t (do + not), and I’ve (I + have) are all contractions. They’re so common that movies and books often try to make characters seem old-fashioned or strange by having them […]

How many significant figures does 0.00120 have? 3 significant figures How many significant figures does 0.003 have? # of sig. fig. # of decimal places c) 0.003 1 3 d) 0.00170 3 5 e) 3,000 assume 1 0 f) 3,000. 4 0 How many significant figures does 0.020 have? two significant figures How many significant […]

What is the light spectrum called? The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. What is the meaning of 2020 vision? 20/20 vision is a term used to express normal visual acuity […]

How do I know if my refrigerator condenser is bad? Although a broken compressor is just one common problem with refrigerators, it can also be one of the most often overlooked, too. Your compressor kicking on and off is what you hear (or don’t hear) at various points during the day – you hear a […]

What type of energy is stored in an unlit match? potential energy Which best explains Taros error? Which best explains Taro’s error? The total energy of the system remains the same. The human body stores chemical energy from digested food. Some of the chemical energy is converted into mechanical energy when the body moves. Which […]

How does a person move forward during swimming? A person applies force on the water in backward direction and water according to the third law of motion water apply an equal and opposite force in the forward direction which helps a person to swim. How do swimmers reduce drag? Here are ten good ways to […]

What does it mean when an object does not slip? It means the object moves uniformly in one direction along the surface, with no angular velocity about the object’s own center of mass. What does it mean when a ball rolls without slipping? Rolling without slipping is a combination of translation and rotation where the […]

How do you calculate the no load speed of a DC motor? By multiplying the velocity constant by the nominal motor voltage, obtain the theoretical no-load speed of the motor (zero torque and no-load speed) and plot it on the left vertical axis. Draw a straight line between this point and the stall torque and […]

What do the arrows in a food chain represent quizlet? Food chains show which organisms eat other organisms. The arrows represent the direction of the transfer of energy from one organisms to the next. What causes the arrows to move in this direction? The earth’s rotation causes a phenomenon called Coriolis effect. The lower latitudes […]

Is Lemon juice is a good conductor of electricity? When lemon juice is added to water, the acid dissociates into anions and cations which are charged. Hence they can conduct electricity as these charged particles are able to flow inside the acid. Hence when the salt or lemon juice is mixed in distilled water it […]