Category: Physics

What are three characteristics of air mass? Continental air masses are characterized by dry air near the surface while maritime air masses are moist. Polar air masses are characterized by cold air near the surface while tropical air masses are warm or hot. Arctic air masses are extremely cold. What is the difference between an […]

How do I protect my rabbits from hawks? Keep your outdoor pet rabbit safe from predators, such as hawks, by keeping it in a sturdy wooden hutch. If you’ve decided to house your pet rabbits outdoors, then your No. 1 concern is for their safety and well-being. This means that they must have ample protection […]

Which salt is significantly more soluble in a strong acid than in water? For KClO4, adding H+ forms HClO4 but that is a strong acid so it is NOT more soluble in acid. For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water. […]

Is a D+ passing? Usually, at institutions in the U.S., a D+ is a passing grade. However on a 4.0 scale it carries only one quality point. Very often, students who fail to maintain a 2.0 cumulative grade point average may be placed on academic probation, so a D+ doesn’t really help a student. Is […]

How do we check Neutralisation is complete? Pure water is neutral (its pH is 7). A neutral solution can be produced if the correct amounts of acid and alkali react together. The change in pH during a neutralisation reaction can be measured using a pH probe and meter, or estimated using universal indicator solution and […]

Does the Little Dipper point to the North Star? The most famous star in the Little Dipper is Polaris, which is currently known as the North Star or Pole Star, as it appears to be aligned with Earth’s axis, or Celestial Pole. The two stars will point to Polaris. What is the myth behind the […]

Does a horse have 1 horsepower? Power of a horse Although it may seem safe to assume that one horsepower is the output a horse is capable of creating at any one time, that is incorrect. In fact, the maximum output of a horse can be up to 15 horsepower, and the maximum output of […]

What are the factors that cause a Travelling wave? Surge is a type of travelling wave which is caused because of the movement of charges along the conductor. The surge generates because of a sudden vary steep rise in voltage (the steep front) followed by a gradual decay in voltage (the surge tail). What does […]

Which equation is dimensionally incorrect? u=v−at , u is initial velocity, v is final velocity, a is acceleration and t is time. ⇒LT−1=LT−1−(LT−1) . Hence it is dimensionally correct. Is a dimensionally correct equation may be wrong? A dimensionally correct equation may or may not be correct. For example , s=ut+at2 is dimensionally correct , […]

How does kinetic energy of a body change if its mass is doubled? Answer: If mass is doubled, leaving velocity constant, Ke is doubled. If velocity is doubled leaving mass constant, kinetic energy is increased four times. What will be the effect on kinetic energy of an object if its mass is doubled? If you […]