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Q1: The rate of evaporation is affected by, (1) Temperature: Evaporation increases with an increase in temperature. (2) Surface Area: Evaporation increases with an increase in surface area. (3) Humidity: Evaporation decreases with an increase in humidity. (4) Wind speed: Evaporation increases with wind speed.
Q2: Rutherford passed beams of alpha particles through a thin gold foil to observe the atom and noted how the alpha particles scattered from the foil. ... Most of the α-particles passed straight through the gold foil without any deviation. 2. Some of the α-particles were deflected by the foil by some angles.
Q3: In equation form, Newton's second law of motion is a=Fnetm a = F net m . This is often written in the more familiar form: Fnet = ma. The weight w of an object is defined as the force of gravity acting on an object of mass m. ... Friction is a force that opposes the motion past each other of objects that are touching.
Q4: The law of universal gravitation or the universal law of gravitation is related to the masses and the distance between any two bodies in the universe. It is directly proportional to the product of the masses between which it acts and the universal gravitational constant G. Formula used: F=Gm1m2r2.
Q5: 1: Because there is no atmosphere at moon. Sound needs a medium to travel. ... Due to absence of air on moon,sound cannot travel so astronauts cannot hear each other.
2: the minimum distance between the point of generation and reflecting surface should be half of it i.e. 17. ... So, we cannot hear an echo in a small room as the minimum distance for the echo will not be satisfied.
Q6: The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
Q7: The peripheral nervous system contains two broad classes of motor neurons. The somatic motor neurons stimulate voluntary muscles, such as those in the arms, legs, and neck; the cell bodies of these neurons are located inside the central nervous system, in either the brain or the spinal cord. Nervous system cells are called neurons. They have three distinct parts, including a cell body, axon, and dendrites. These parts help them to send and receive chemical and electrical signals.
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