What is the effect of unbalanced forces? An unbalanced force can change an object’s motion. An unbalanced force acting on a still object could make the object start moving. An unbalanced force acting on a moving object could make the object change direction, change speed, or stop moving. What would the resultant force on an […]
Where is UV found?
Where is UV found? UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. What is UV color? UV light has a shorter wavelength than visible light. […]
Why does oil make a rainbow in water?
What two properties of water make capillary action possible?
What two properties of water make capillary action possible? Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances). Why is capillary action important to life? Capillary action is important for moving water around. […]
How do you calculate the buoyant force of water?
How do you calculate the buoyant force of water? In general, the buoyancy force on a completely submerged object is given by the formula: FB=Vρg, where V is the volume of the object, ρ is the density of the fluid, and g is gravitational acceleration. What buoyancy means? 1a : the tendency of a body […]
What do you mean by C * * * * * * * * * Frequency?
Why is the mitochondria a bad organelle?
Why is the mitochondria a bad organelle? Because mitochondria are essential to so many cellular processes, when anything goes wrong with these organelles, they could be linked to many diseases. Recent discoveries have connected malfunctioning mitochondria to Parkinson’s, heart disease, diabetes, and cancer. What is the most important organelle in a plant? The Nucleus is […]
Is tens AC or DC?
Is tens AC or DC? A standard TENS unit typically delivers a low-frequency (<50 Hz) alternating current to a focused treatment area. Due to the nature of low-frequency, however, these signals have a low capacity to overcome skin resistance – resulting in these units only providing pain relief via the Gate Control Theory while being […]
Can you rotate your body in mid air?
Can you rotate your body in mid air? One cannot change one’s angular momentum in mid-air, other than by interaction with the air. A sky-diver, falling through the air after the first few seconds, is falling at “terminal velocity”. Can you rotate in the air? Jump into the air, you can turn your body. Physicists […]
When light interacts with matter 3 things can happen?
When light interacts with matter 3 things can happen? Light can interact with matter in three ways: absorption, transmission, and reflection. 1. ABSORPTION – When a light wave with a identical frequency to an electron’s natural frequency “impinges” upon an atom, the electrons will begin to vibrate as a result (almost like they are “set […]