Please help with 1 and 2
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IV: What the scientist changes
DV: What changes because of the IV
Related Questions
Magali exerts a force of 4.5N to slide her blackberry across the table.If she does 2.7J of work in the process,how far has the blackberry moved?
3 characteristics of physical change
Which bird on the wire, the one with a mass of 50g or the one with a mass of 60g, has the most potential energy?
Explain whether smoke filling up a room is diffusion or not
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Assuming the initial direction of motion before impact as negative and final direction of motion as positive.
m = mass of the ball being hit = 0.15 kg
v₀ = initial velocity of the ball before the impact = - 36 m/s
v = final velocity of the ball after impact = 45 m/s
t = time of impact = 0.0020 s
F = force Reggie exerted on the ball
Using Impulse-change in momentum equation
F t = m (v - v₀)
F (0.0020) = (0.15) (45 - (- 36))
F = 6075 N
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The carpet is more likely to accumulate excess electric charge (static electricity) over time when there is no good way for it discharge. The dry air, as was said, insulates the carpet and makes it prone to such accumulation. This is less the case with humid air that allows the carpet to continuously discharge a portion of its electric charge over time and thus spares us--the walkers--a minor shock.
Final answer:
Dry air is a better electrical conductor than humid air, which is why you are more likely to receive a shock after walking across a carpet when the air is dry compared to when the air is humid.
Explanation:
The reason you are more likely to receive a shock after walking across a carpet when the air is dry than when the air is humid is because dry air is a better electrical conductor than humid air. When the air is dry, it has a lower field strength, meaning that it takes a smaller voltage to create a spark. On the other hand, humid air breaks down at a lower field strength, so it takes a larger voltage to create a spark. This is why you are more likely to get a shock on a dry day.
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2.01 kg, 2.02 kg, 1.99 kg, 1.97 kg
Which answer choice BEST describes these measurements?
A. accurate and precise
B. inaccurate and precise
C. accurate and imprecise
D. inaccurate and imprecise
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Answer:
inaccurate and precise
Explanation:
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The gravitational force on the car is the force popularly known
as the car's "weight". Its magnitude is
(9.8 m/s²) times (the car's mass, in kilograms) .
The unit of this quantity is [newton] .
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Cells are the units that together make the organism. Most of the cells are 70% water as it is the most abundant molecule that makes the cytoplasm and organelles.
What is a cell?
A cell is a structural organization that is composed of various organic, and inorganic substances that also have water as the most abundant molecule. It is the most important component that is needed for cellular and metabolic reactions.
It makes the cytoplasm of the cell that occupies most of the cell portion. Water is the most important reactant and the product of the photosynthesis and respiration processes of plant and animal cells. Water is needed by the cell to transport the nutrients and the waste, and even in cell signaling.
Therefore, cells are made of 70% water as the component.
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