Category: Physics

What can happen to your bones if they lose calcium? Aging and Bone Loss As you age, your body may reabsorb calcium and phosphate from your bones instead of keeping these minerals in your bones. This makes your bones weaker. When this process reaches a certain stage, it is called osteoporosis. Is calcium more concentrated […]

Is the control group the independent variable? The independent variable is “controlled” or held constant in the control group. A single experiment may include multiple experimental groups, which may all be compared against the control group. The purpose of having a control is to rule out other factors which may influence the results of an […]

Is infrared helpful or harmful? Medical studies indicate that prolonged IR exposure can lead to lens, cornea and retina damage, including cataracts, corneal ulcers and retinal burns, respectively. To help protect against long-term IR exposure, workers can wear products with IR filters or reflective coatings. What are the advantages and disadvantages of infrared waves? 1) […]

Which foods are high in enzymes? Foods that contain natural digestive enzymes include pineapples, papayas, mangoes, honey, bananas, avocados, kefir, sauerkraut, kimchi, miso, kiwifruit and ginger. Adding any of these foods to your diet may help promote digestion and better gut health. Can digestive enzymes be harmful? Digestive enzyme supplements also could interact with antacids […]

What month do we get more daylight? March Why is there less sun in the winter? During winter, the Northern Hemisphere leans away from the sun, there are fewer daylight hours, and the sun hits us at an angle; this makes it appear lower in the sky. There is less heating because the angled sun’s […]

What 3 categories do biological rhythms fall into? There are three types of biological rhythms: Circadian rhythms: biological cycles that occur about every twenty-four hours. Sleep follows a circadian rhythm. Infradian rhythms: biological cycles that take longer than twenty-four hours. Ultradian rhythms: biological cycles that occur more than once a day. What is an example […]

What is difference between balanced and unbalanced force? If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of […]

What is the function of striated muscle? The primary function of striated muscles is to generate force and contract in order to support respiration, locomotion, and posture (skeletal muscle) and to pump blood throughout the body (cardiac muscle). What is the difference between striated and smooth muscle? Striated muscle is composed of muscle fibers, made […]

Is it possible for a heat engine to operate without rejecting any waste heat to a low temperature reservoir explain? It is not possible for a engine to operate without rejecting any waste heat to a low temperature reservior. It violates the second law of thermodynamics, the operation of a heat engine a low temperature […]

What type circuit connection should a light bulb be connected to maintain maximum brightness? Answer. Placing cells in series increases the voltage in the circuit by 1.5 V for each cell. Increasing the voltage increases the brightness of the bulb. When a bulb in a series circuit is unscrewed all bulbs in the circuit go […]