What is an example of fluorescence? The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, while the emitted light is in the visible region, which gives the fluorescent substance a distinct color that can be seen only when […]
What is SI unit of merit?
What is SI unit of merit? Figure of merit is the amount of current been passed in the unit of deflection in a galvanometer. Its SI unit is Ampere per division. What’s the difference between a galvanometer and a multimeter? The galvanometer is converted into the ammeter by connecting the resistance in parallel with the […]
Can you have a growth spurt at 16?
How do you check the oxygen level in an aquarium?
How do you check the oxygen level in an aquarium? The best way to test the amount of dissolved oxygen in your aquarium’s water is with a portable dissolved oxygen meter. After calibrating the meter, you can place a probe into the tank water, and read the results on the digital display. How do you […]
Why is resistance less when resistors are joined in parallel?
Why is resistance less when resistors are joined in parallel? When resistances are connected in parallel the current in the circuit gets parallel branches to go from one point to another across which the potential difference is applied. So, the equivalent resistance is less when resistors are connected in parallel. What happens to resistance in […]
Does an object have no energy moving?
Does an object have no energy moving? Kinetic and potential energies are found in all objects. If an object is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is “stored” because of the position and/or arrangement of the object. And in falling, can exert forces and do work […]
What foods promote neurogenesis?
What foods promote neurogenesis? Intake of flavonoids, which are contained in dark chocolate or blueberries, will increase neurogenesis. Omega-3 fatty acids, present in fatty fish, like salmon, will increase the production of these new neurons. Conversely, a diet rich in high saturated fat will have a negative impact on neurogenesis. How does neurogenesis affect memory? […]
What temperature does it need to be to sunbathe?
What temperature does it need to be to sunbathe? 88° F: Perfect beach temperature. Hot enough that you have motivation to get in the water, not so hot that you bake too quickly. 90° F: Excellent sunbathing temperature. Is 25 degrees warm enough for the beach? Refreshing, but after a while it still feels too […]
Can coefficient of drag be negative?
Can coefficient of drag be negative? Drag coefficient cannot be negative in steady flow and a negative value of drag coefficient in steady flow indicates a computational error. It can however be zero in unsteady flow instantaneously. Negative drag is thrust. Why is drag negative? When drag is termed “positive”, that means that it is […]
What is the acceleration of a falling skydiver?
What is the acceleration of a falling skydiver? Near the surface of the Earth, any object falling freely will have an acceleration of about 10 m/s 2. What happens to a skydivers acceleration? The skydiver accelerates towards the ground. As the skydiver gains speed, their weight stays the same but the air resistance increases. There […]