What is the main advantages of using a fuse? 1) It is the cheapest form of protection. 2) It doesn’t need any maintenance . 3) Its operation is completely automatic and requires less time as compared to circuit breakers. 4) The smaller sizes of fuse element impose a current limiting effect under short-circuit conditions. What […]
Which metal is used to make car bodies?
Which metal is used to make car bodies? The main materials used for making cars, parts and components, along with future trends, are steel, aluminum, magnesium, copper, plastics and carbon fibers. The prime reason for using steel in the body structure is its inherent capability to absorb impact energy in a crash situation. What is […]
What is a healthy breathing rate?
What is a healthy breathing rate? Normal respiration rates for an adult person at rest range from 12 to 16 breaths per minute. Does your oxygen level drop when exercising? The oxygen level in your blood decreases slightly while exercising because physical activities lower the amount of oxygen that binds to hemoglobin. When you’re working […]
What are objects?
What are objects? Definition: An object is a software bundle of variables and related methods. You can represent real-world objects using software objects. Everything that the software object knows (state) and can do (behavior) is expressed by the variables and methods within that object. Will a styro cup float on water? Styrofoam is insoluble in […]
Why is concave mirror used in Searchlight & head lights?
Why is concave mirror used in Searchlight & head lights? When the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances) and at infinity they are approximately parallel. Hence, concave mirrors are used in the headlights of vehicles. What is the role of […]
What causes the temp to decrease with height in the mesosphere?
What causes the temp to decrease with height in the mesosphere? Within the mesosphere, temperature decreases with increasing height, due to decreasing absorption of solar radiation by the rarefied atmosphere and increasing cooling by CO2 radiative emission. The top of the mesosphere, called the mesopause, is the coldest part of Earth’s atmosphere. Does temperature increase […]
How does deicing with salt negatively impact the environment?
How does deicing with salt negatively impact the environment? How does de-icing roads with salt negatively impact the environment? It removes necessary salt from the local water courses. c. The high salinity of the surface runoff is harmful to freshwater ecosystems. What are the environmental impacts of salt? But it can also have serious, negative […]
What are the two main sources of thermal energy?
What are the two main sources of thermal energy? 1. Describe three ways in which thermal energy is found in nature. Thermal energy is found in the sun (solar energy), below Earth’s surface (geothermal energy), and in fire and other chemical reactions, and decay. What are main sources of heat? Sun is the biggest source […]
What are some short term effects of stress?
What are some short term effects of stress? Short term: You may feel butterflies in your stomach, pain, or nausea, or might even vomit. Your appetite can change and you can have diarrhea, constipation, or heartburn. Long term: Stress can lead to severe chronic pain and changes in your eating habits. You can also develop […]
What are some long term consequences of desertification?
What are some long term consequences of desertification? Desertification reduces the ability of land to support life, affecting wild species, domestic animals, agricultural crops and people. The reduction in plant cover that accompanies desertification leads to accelerated soil erosion by wind and water. How can we reduce land degradation? 5 possible solutions to soil degradation […]