Category: Physics

Does mental health get better with age? Like good wine and cheese, one’s mental health improves with age, new research suggests. In a study of more than 1000 adults, people in their senior years were found to be happier and more content with their lives than those in their 20s and 30s, despite their physical […]

Can magnetic force pass through iron? Magnetic fields will pass through plastic, wood, aluminium and even lead as if it was not there. There is no material that will block magnetism. Ferrous materials such as iron, steel or nickel can conduct magnetic fields and redirect magnetism. Does water have magnetic properties? Water has many unusual […]

Is energy released when two hydrogen atoms form a covalent bond? The amount of energy released when the bond is formed is called the bond energy. Formation of a covalent bond releases the bond energy, which means that as the bond forms, the energy of the atom decreases. In the diagram below you can see […]

What is the benefit of overpopulation? There are some benefits of overpopulation, more people means more labor force, it can product more things, and more people will buy the products, However, the growth of population should be similar to the food supply, so overpopulation will cause lack of food, and as the rate of growth […]

Can 0 degrees freeze water? We’ve all been taught that water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, 273.15 Kelvin. Scientists have found liquid water as cold as -40 degrees F in clouds and even cooled water down to -42 degrees F in the lab. How cold is hot ice? Although it looks like […]

What happens to extra electrons in a charged object when it becomes grounded? Grounding is the process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size. When a charged object is grounded, the excess charge is balanced by the transfer of […]

Will the next force be equal to zero? The net force is the vector sum of all the forces acting on an object. When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero. A vector can only have zero magnitude if all of its […]

What are the components of centripetal force? As a bucket of water is tied to a string and spun in a circle, the tension force acting upon the bucket provides the centripetal force required for circular motion. As the moon orbits the Earth, the force of gravity acting upon the moon provides the centripetal force […]

What is correct formula for calculating COP of heat pump? Answer. Explanation: COPHP = (Desired Output)/(Required Input) = (Heating Effect)/(Work Input) = QH/Wnet,in = 1 + (QL/Wnet,in) Both the COP of a refrigerator and a heat pump can be greater than one. What goes wrong with heat pumps? Some of the common issues covered in […]

Can hypothesis be proven? Upon analysis of the results, a hypothesis can be rejected or modified, but it can never be proven to be correct 100 percent of the time. For example, relativity has been tested many times, so it is generally accepted as true, but there could be an instance, which has not been […]