Comparisons

No. Root pressure can move water a short distance up the xylem because of the lower water potential of the xylem in comparison to the water potential in the surrounding cells

A haploid cell is s germ cell that gives rise to gametes or sex cells in organisms that reproduce sexually. They contain the haploid number of chromosomes denoted by the letter n. In humans, n = 23

A diploid cell is a body cell that makes up tissues and organs. They contain diploid number of chromosomes denoted by 2n. In humans, 2n = 46

The region of the stratosphere that contains diminished concentrations of ozone in comparison to normal levels is called the ozone hole.

Red Blood cells are not known to shrink in size as fast and as often as all of the component parts of the modern microchip. Blood cells can be seen by the visible light microscope, microchip pats can only be seen with and electron microscope set to see things far smaller

In an elastic collision, all initial kinetic energy is fully restored as final kinetic energy. where nothing is converted into noise, heat or any other form of energy. In an inelastic collision, kinetic energy is "lost" to thermal or sound energy.

Based on the fact that Planet A has a greater mean distance from the Sun than Planet B, you can correctly infer that Planet A likely has a longer orbital period than Planet B. This is because planets that are farther from the Sun generally take longer to complete one orbit.

A molecular clock model uses DNA comparisons to estimate the length of time that species have been evolving independently. This model assumes that DNA sequences accumulate mutations at a relatively constant rate over time, allowing researchers to infer divergence time between species based on the number of differences in their DNA sequences.

An object is in motion only if its distance from a reference point is changing. The average speed of the object is given by the object's rate of change of displacement from the reference point over time.

Dandelions are flowering plants that produce pollen as part of their reproductive process. Pollen is a powdery substance containing the male reproductive cells of flowering plants like dandelions. Dandelion pollen can be spread by wind or insects to fertilize other dandelion flowers, leading to seed production.

different species share a common evolutionary ancestry based on similarities in early stages of development. These similarities can provide insights into the evolutionary relationships among different organisms. Embryological comparisons also highlight how genes control the process of development.

94 percent (which is easily calculated, 3760/4000x100).

A chemically inactive substance used for comparison with active drugs in an experiment is called a placebo. Placebos do not contain any active ingredients but are given to participants as a control to measure the effects of the active drug. This helps researchers determine if the observed effects are due to the drug being tested or are the result of psychological factors.

Thermal energy is roughly proportional to temperature.

Benzyl ethene is not a proper name it means 3-phenyl propene similarly 1,2 dibenzyl ethene means 1,4 diphenyl -2- butene, the later is more stable due to possibilities of more resonating structures.

The B-2's maximum speed is 628 mph while the speed of sound is 768 mph, so ii is subsonic (the B-2 cannot fly faster than sound).

Yes, aerobic respiration produces much more energy than glycolysis. Glycolysis only yields 2 ATP molecules per glucose molecule, while aerobic respiration produces up to 36-38 ATP molecules. This is because aerobic respiration involves the additional steps of the citric acid cycle and oxidative phosphorylation, which extract more energy from glucose.

The Gulf Stream is a warm ocean current. It originates in the Gulf of Mexico and flows northward along the eastern coast of the United States before crossing the Atlantic Ocean towards Europe, carrying warm water and influencing the climate of the regions it passes through.

In this comparison, syrup would represent magma, while air would represent gas bubbles within the magma. Just as syrup is viscous and can trap pockets of air, magma can contain trapped gas bubbles as it flows through rocks.

The standard comparison for atomic weights on the periodic table is carbon 12. This is a common isotope of carbon which has 6 protons and 6 neutrons. Carbon 12 is assigned an atomic mass of 12, and other elements' atomic masses are all relative to this value.

After researching plasma TV's and attempting to answer the question: do plasma TV's contain human blood plasma? - there has been no answer given to this vital question. Where does the plasma for plasma TV's come from? How is it created? How is it combined with other elements/components to create organic/plasma TV's? These are questions to which there is no answer given.

cell wall is present in plant cell & not present in animal cell

chloroplast is present in plant cell & not in animal cell

plant cells are larger & have definite shape......animal cells are smaller and have irregular shape

vacuoles are present in plant cell & not in animal cell

A "law" is just a theory that has been around long enough to inspire a lot of confidence in its chances of being true.

By that time, it has been tested by experiments and none has ever found a problem with it.

Also by that time, the theory has produced predictions that have been proven accurate by experiments designed to test them.

So it begins to be referred to as a "law".

But that doesn't mean that it can never be blown to bits. Even at this stage, it may still be found out as only an approximation, or only a part of the story, for example when experimental techniques become more precise. This has actually happened to Newton's "Laws" of motion.

Water is often used as a standard for comparison in various contexts because it is a common and well-understood substance with clear properties and behaviors. Its density, specific heat capacity, and other characteristics make it a useful reference point for understanding the properties of other substances or for calibrating instruments. Additionally, water is essential for life and many natural processes, making it a practical and relevant standard for comparison.

Well, that all depends. You see the number of revolutions that an electrical motor turns is dependent upon the cycles per second (Hertz) that the alternating current is changing. A motor that is designed to run on 60 Hz and is plugged into a 50 Hz system will turn 17% slower, the internal current will go up 17%, the amount of power (watts) will go down 17%, and the mechanical cooling will be 17% less. The end result will be that the motor will be using a higher current then what the motor was designed for, and this in turn will burn up the insulation of the electrical wiring which can result in burnout which could cause a fire because of the excessive heat.

2. That is correct.

A motor designed for 60 Hertz which is run from 50 Hertz will draw more power and run hotter and slower.

But this is unlikely to burn up the insulation and cause an outright fire unless the motor was designed poorly and running very hot on the proper frequency to begin with. Still, the consideration of smoke and fire is disturbing.

The extra heat can be compensated for by using a fan or larger fan on the motor shaft to cool the motor.

3. Aside from motors, in principle there is very little to choose between them. 50 Hz is slightly better for long distance power transmission because the power loss in the overhead lines is less. But a 50 Hz transformer needs about 17% more iron in it so it is are bigger and heavier.

Its velocity just before it hits the floor is found from kinematic equations and acceleration due to gravity; V = SqRt{2gy) = SqRt{19.6} = 4.4 m/s . The velocity after 1 ms is zero. The average deacceleration is the velocity difference divided by the time during impact; a = (4.4 - 0 )/.001 = 4400 m/ss .