Category: Physics

Why does heat transfer increase with flow rate? In this mode, heat transfer is because of the mass transfer. As our common sense suggests, more the velocity, more the rate of mass transfer and hence more is the rate of convective heat transfer. Hence heat transfer coefficient increases with the increase in the velocity of […]

What are the 5 evidences of a chemical reaction? Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change. Is rotting a chemical reaction? Rotting, burning, cooking, and rusting […]

Can a gun be traced without a serial number? If the firearm has no serial number, and never had a serial number, the lack of a serial number renders the firearm illegal. [Except a non-NFA home manufacture that you have no intent to sell, which we will explain later.] The firearm had a serial number, […]

Will water freeze if it has no room to expand? What Happens When You Freeze Water in a Container So Strong the Water Can’t Expand Into Ice? The short answer is that the water still turns into ice; however, if it genuinely cannot break the bonds of the container it is trapped inside, it turns […]

How do disease prevention try to reduce cardiovascular disease? Eat a healthy diet. Try to limit saturated fats, foods high in sodium, and added sugars. Eat plenty of fresh fruit, vegetables, and whole grains. The DASH diet is an example of an eating plan that can help you to lower your blood pressure and cholesterol, […]

What is between light and dark? The intensity of the penumbra is halfway between the dark and light area. The size of the penumbra is related to the angular extent of the light source that is creating the shadow. The penumbra makes shadows appear less sharp and distinct. What is the purpose of darkroom? A […]

Did Newton really get hit by an apple? he first thought of his system of gravitation which he hit upon by observing an apple fall from a tree , The incident occurring in the late summer of 1666. In other accounts it is stated that Newton was sitting in his garden at Woolsthorpe Manor near […]

What is the most challenging thing with managing intersections? Angle crashes at T intersections are some of the most severe accidents occurring at intersections. When should you signal in town? Before you stop, turn or change lanes, let the other drivers know what you are going to do by signaling. You can signal with your […]

Has anyone invented a time machine? Ali Razeqi says his time machine uses “complex algorithms” to see the future. It’s not quite Back to the Future, but a young Iranian inventor claims to have built a time machine that can predict a person’s future with startling accuracy. How a time machine would work? Time machines […]

What are the 10 examples of inertia of rest? 10 examples of law on inertia in our daily life You tend to move forward when a sudden break is applied. You feel a backward force when the bus moves quickly from rest. Dusting bed with a broom removes dust due to inertia of rest. when […]