Why does the ball bounce back? The force of the ball hitting the hard ground puts an equal force back onto the ball, meaning it bounces back up. This happens because balls are made out of an elastic material which allows them to be squashed or stretched and then return to their original shape. How […]
What is the difference between frequency intensity type and time?
What is the difference between frequency intensity type and time? FITT stands for frequency, which is how often you exercise, intensity, which is how hard you exercise, time, which is how long each session lasts and what time of day you exercise, and type, which is what activities you do. What kind of intensity is […]
What does it mean if electrons are shared equally evenly between the atoms?
What does it mean if electrons are shared equally evenly between the atoms? A Nonpolar Covalent Bond is created when atoms share their electrons equally. This usually occurs when two atoms have similar or the same electron affinity. The closer the values of their electron affinity, the stronger the attraction. This occurs in gas molecules; […]
How is surface tension measured?
How is surface tension measured? Surface tension can be measured with force tensiometer using Du Noüy ring or Wilhelmy plate. Or with optical tensiometer using the pendant drop method. When alcohol is dissolved in water surface tension? Hence, when a sparingly soluble substance like alcohol is dissolved in water, the surface tension of the water […]
Does Zigbee affect WiFi?
Does Zigbee affect WiFi? ZigBee and WiFi channels both exist in the 2.4 GHz band, existing in the exact same frequency space. Operating a ZigBee network and a WiFi network on the same frequency will cause them to interfere with each other. Why is Zigbee so expensive? Zigbee devices are typically more expensive because they […]
What is meant by equilibrium?
What is meant by equilibrium? Equilibrium, in physics, the condition of a system when neither its state of motion nor its internal energy state tends to change with time. For a single particle, equilibrium arises if the vector sum of all forces acting upon the particle is zero. Under what condition’s will an object be […]
Are cirrus clouds dangerous?
Are cirrus clouds dangerous? Cirrus clouds are high altitude clouds made of ice crystals that are generally found above 20,000 feet above ground level (AGL). Since they form in stable air, they usually don’t pose a risk as far as turbulence or icing. What weather does the cirrus cloud bring? Cirrus clouds are the most […]
What material reflects sound best?
What material reflects sound best? In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators – absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most. Do sound waves behave in a predictable way? You have read that mechanical waves travel through a medium like air, water, or […]
What is the main idea of Penelope?
What is the main idea of Penelope? Central Theme of Penelope: The theme deals with the pain that a woman faces on the subjugation of her deeds. She does all the household work while her husband is away, remains faithful by keeping her suitors away, brews her coffee, threads and performs all her duties. Who […]
What happens to the resistance when the length of the wire is increased?
What happens to the resistance when the length of the wire is increased? when you have longer length of wire, the current has to travel more distance, more the distance higher the number of obstacles it faces through its path. Therefore resistance increases with the length. When cross sectional area increases the space of the […]