Category: Physics

How do you determine IV and DV? In an experiment, the IV is a variable that is changed to see how it affects something else, whereas the DV is a variable that is being measured/observed. The DV is assumed to be affected by the IV, hence the term ‘dependent’ (its value depends on the state […]

When would a moving car be in equilibrium? The net force acting on the object must be zero. Therefore all forces balance in each direction. For example, a car moving along a highway at a constant speed is in equilibrium, as it is not accelerating in any forward or vertical direction. Mathematically, this is stated […]

What was the main purpose of this World War II poster? These posters were intended to rouse the nation’s spirit and convey a sense of common purpose. They promoted patriotism, productivity, and sacrifice. They helped convince Americans during World War II to put up with shortages, obey rationing rules, and maintain wartime secrecy. How is […]

What is a commutator math? In mathematics, the commutator gives an indication of the extent to which a certain binary operation fails to be commutative. There are different definitions used in group theory and ring theory. What is the difference between oscillator and rectifier? Rectifiers convert AC to DC. A computer power supply providing constant […]

Why do oppositely charged particles have to attract repel each other? The two charges repel each other. If a positive charge and a negative charge interact, their forces act in the same direction, from the positive to the negative charge. As a result opposite charges attract each other: The electric field and resulting forces produced […]

How can you prove that sound is produced by vibration? Take a rubber string stretch it tightly between two supports. Pluck the string, the string begins to vibrate. Then we will be able to hear some sound, stop the movement of the string. Even the sound also stops. Why do I feel small vibrations in […]

What is the best car lift for home garage? Comparison of the best car lifts for home garages Brand Lift Type Best car lift overall/Best four-post car lift Triumph Four-post Best car lift for the money/Best portable car lift QuickJack Portable Best heavy-duty car lift APlusLift Two-post Best two-post car lift Triumph Two-post How tall […]

Is sleet or ice worse? 1. Freezing rain and sleet are a winter storm’s silent hazards. Ice in the form of freezing rain and sleet is just as big of a threat as snow, and often result in a winter weather advisory being issued for the affected region. Ice is arguably more dangerous than the […]

What is the angle of rotation of a circle? In mathematics, the angle of rotation is a measurement of the amount, of namely angle, that a figure is rotated about a fixed point, often the center of a circle. If a cart moves around the wheel once, the angle of rotation is 360°. What is […]

How do you calculate apparent brightness? Apparent brightness is thus measured in watts per square meter. For instance, the apparent brightness of the Sun is b = 1370 watts/meter2. That is, if you had a perfectly efficient solar panel one meter on a side, if you held it perpendicular to the Sun’s rays, it would […]