Category: Physics

What are the 3 causes of acceleration? What Causes Acceleration What Causes Acceleration? Stopping, Starting, Speeding Up, Slowing Down and Even Turning Corners. Force: can be used to speed up an object. Read Chapter 4 Vocabulary on Pg. 111 What is change in acceleration called? In physics, jerk or jolt is the rate at which […]

How do you find the velocity of two objects after a collision? If two particles are involved in an elastic collision, the velocity of the second particle after collision can be expressed as: v2f=2⋅m1(m2+m1)v1i+(m2−m1)(m2+m1)v2i v 2 f = 2 ⋅ m 1 ( m 2 + m 1 ) v 1 i + ( m […]

Can a person be found guilty without evidence? The simple answer is, “no.” You cannot be convicted of a crime without evidence. You cannot be convicted of a federal crime. If there is no evidence against you, under the law, it simply is not possible for the prosecutor’s office to obtain a conviction at trial. […]

Will water evaporate in a closed container? Water will evaporate in a sealed box as the vapour-liquid equilibrium changes. This happens with changing temperature, changing pressure and some other changes. Water will evaporate in a sealed box as the vapour-liquid equilibrium changes. Does water evaporate faster covered or uncovered? A covered pot boils faster than […]

What are two examples of a wheel and axle? Common Wheel and Axle Examples Bicycle. Car tires. Ferris wheel. Electric fan. Analog clock. Winch. What formula do you use to calculate the ideal mechanical advantage of a wheel and axle? As shown in the figure, the ideal mechanical advantage is calculated by dividing the radius […]

Does all energy have a frequency? Wave frequency is related to wave energy. Since all that waves really are is traveling energy, the more energy in a wave, the higher its frequency. The lower the frequency is, the less energy in the wave. Following the above examples, gamma rays have very high energy and radio […]

How do you make a door swing both ways? Remove the blocks and allow the door to swing in the opposite direction. If the door swings too easily, insert a hex wrench into the holes on the bottom of both small double-action hinges. Use the hex wrench to turn the end of the cylinder clockwise, […]

How many times do you have to repeat an experiment? For most types of experiment, there is an unstated requirement that the work be reproducible, at least once, in an independent experiment, with a strong preference for reproducibility in at least three experiments. Why is it necessary to repeat the experiment in each case twice? […]

What is variation and its causes? Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism’s offspring). What are the 2 causes of variation? Major causes of variation include mutations, gene flow, […]

Which is the most important layer of soil and why? It usually covers a layer of subsoil, which in turn covers the rock underneath, although when the soil is very thin, topsoil and subsoil may be indistinguishable. Topsoil is so important because it contains all the nutrients that plants need to survive. Which is the […]