Is there gravity in a vacuum? In a vacuum, gravity causes all objects to fall at the same rate. The mass of the object does not matter. If a person drops a hammer and a feather, air will make the feather fall more slowly. But if there were no air, they would fall at the […]
What type of energy does burning food release?
What type of energy does burning food release? This food is oxidized (or “burned”) inside our bodies during digestion. As this happens, chemical energy stored in the food is converted to heat energy (to maintain our constant body temperature), mechanical energy (to move our muscles), and electrical energy (for nerve transmission). What form of energy […]
What can affect a compass reading?
What are the 4 common concepts in nursing theory?
What are the 4 common concepts in nursing theory? According to the four concepts common in nursing theory; the person (patient), the environment, health & nursing (goals, roles, functions) can be analyzed. Each of these concepts is usually defined and described by a nursing theorist. Of the four concepts, the most important is that of […]
What are 5 physical contaminants?
What are 5 physical contaminants? Common examples of physical contaminants in food businesses include: hair. fingernails. bandages. jewellery. broken glass, staples. plastic wrap/packaging. dirt from unwashed fruit and vegetables. pests/pest droppings/rodent hair. How quickly can bacterial contamination occur in food? Food poisoning can happen when disease-causing bacteria or other germs, also called ‘pathogens’, spread to […]
What color of light has the highest frequency?
What color of light has the highest frequency? Violet waves What is the depression of light? Dispersion of light is caused by the change of speed of light ray (resulting in angle of deviation) of each wavelength by a different amount. Note: White light comprises of seven visible colours (VIBGYOR) whereas black (or dark) signifies […]
What gas is important to photosynthesis?
What gas is important to photosynthesis? carbon dioxide What are the raw materials and end products of photosynthesis? The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf. What are three end products of photosynthesis? Glucose and oxygen are […]
What are the basic principles of social facilitation?
What are the basic principles of social facilitation? Social facilitation is the theory that we tend to do better on easy tasks when we know we are being watched or assessed. We do less well on more complex tasks when we know we are being observed by others. What are the effect of social facilitation? […]
Which theory of emotion is best?
Which theory of emotion is best? In psychology, emotion is often defined as a complex state of feeling that results in physical and psychological changes that influence thought and behavior. The James-Lange theory is one of the best-known examples of a physiological theory of emotion. What is the correct sequence of events according to the […]
Who said that a force is not needed to keep an object moving?
Who said that a force is not needed to keep an object moving? Newton What is natural state of an object? Objects do not change motion without unbalanced force. Objects in motion do not always require a force to keep them moving. Objects have two “natural” states of motion, at rest (static equilibrium) and moving […]