Answer:
a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction. For example, if a population is exposed to a new disease, selection will act on genes for resistance to the disease if they exist in the population
Explanation:
hope this helps
The table shows the pricing for four different brands of cat food.
Which brand costs the least per ounce?
A
B
C
D
Brand Cost
A $0.88 for 4 oz
B $1.05 for 5 oz
C $1.60 for 8 oz
D $2.28 for 12 oz
Answer:
D
Explanation:
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An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown in the table below.
Time (s) 1 Position, (m)
37.70 9.600
39.30 18.048
40.90 33.792
Calculate the magnitude of the acceleration at t=39.30
The constant acceleration of the object is [tex]0.414\ m/s^2[/tex].
Acceleration of the objectThe acceleration of the object is constant, and the values at the three different positions is the same.
For the first position and time[tex]s = v_0 t + \frac{1}{2} at^2\\\\37.7 = v_o(9.6) +\frac{1}{2} a(9.6)^2\\\\ 37.7 = 9.6v_0 + 46.08a[/tex]
For the second position and time[tex]39.3 = v_o(18.048) +\frac{1}{2} a(18.048)^2\\\\ 39.3 = 18.048v_0 + 162.87a[/tex]
Solve the first and second equation together[tex]37.7 = 9.6v_0 + 46.08a\\\\39.3 = 18.048v_0 + 162.87a\\\\18.048: \ \ 680.41 = 173.261v_0 + 831.651a\\\\9.6: \ \ \ \ -(377.28 = 173.261 v_0+ 1563.552a)\\------------------\\303.13 = -731.901a\\\\-a = \frac{303.13}{731.901} \\\\-a = 0.414 \ m/s^2\\\\|a| = 0.414 \ m/s^2[/tex]
Thus, the constant acceleration of the object is [tex]0.414\ m/s^2[/tex].
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PLEASE HELP WILL GIVE BRAINLEST!!!
Lunar Cycle Science Escape Room look it up i need to answer because I can't do it on my school computer, they can see everything i do!
.
Answer:
huh what do u want tho its nothing bad
Explanation:
Please answer and show work
A car moving with a velocity of 30m/s has a constant acceleration of -4m/s? What will be the velocity 3 seconds later?
-12m/s
b. 18m/s
C. 42m/s
d. 90m/s
Show Calculation:
Answer:
v2 = v1 + at
a acceleration
t time
v2 final velocity v1 initial velocity
v2 = 30 + -4*3 =
30 -12 = 18m/s
how long does it take a microwave of power 0.2kW to sue 10000 J of energy
Answer:
50s .
Explanation:
[tex]\frak{\pink{Given}}\begin{cases}\textsf{ The power of microvave is 0.2kW .}\\\textsf{ Amount of energy is 10000 J .}\end{cases}[/tex]
Here the power of the microwave is 0.2kW . And as we know that ,
Rate of doing work is called power .So from the definition , we have ;
[tex]\sf\longrightarrow Power =\dfrac{Work}{time}[/tex]
Here the work done is equal to the energy consumed by the microwave i.e. 10000 J .So we can write it as ,[tex]\sf\longrightarrow Power =\dfrac{Energy}{time}[/tex]
[tex]\sf\longrightarrow 0.2kW = \dfrac{10^4 J }{t} \\[/tex]
[tex]\sf\longrightarrow 0.2 * 1000 W = \dfrac{10^4 J }{t} [/tex]
Cross multiply ,
[tex]\sf\longrightarrow t = \dfrac{ 10^4 }{ 0.2 * 10^3}s=\dfrac{10^4}{2*10^2} s [/tex]
Simplify ,
[tex]\sf\longrightarrow \boxed{\bf t = 50s} [/tex]
Hence the time taken is 50s .Lindsay climbs a ladder with power output R. Brian climbs the same ladder in the same amount of time with
double the power output.
Answer:
I believe it's c if not then B
Help asap!!!
Due right now!! fast!!!
Answer:
Not sure but I think its (A)
Explanation:
I think its (A)
Answer:
C
Explanation:
They divided some numbers and got 5
It said something about it accelerates at 10 seconds so all I did was multiply by 2 and I got C
Humans are pouring carbon dioxide into the atmosphere much faster than plant and ocean can absorb it ?
Answer:
Humans are pouring carbon dioxide into the atmosphere much faster than plants and oceans can absorb it. These gases persist in the atmosphere for years, meaning that even if such emissions were eliminated today, it would not immediately stop global warming.
Explanation:
By absorbing increased carbon dioxide from the atmosphere, the ocean reduces the warming impact of these emissions were they to remain in the atmosphere. However, carbon dioxide dissolved into the ocean causes seawater to acidify, threatening the ability of shellfish and corals to build their skeletons and affecting the health of other fish and marine species—many that are important to coastal economies and food security.“The increasing load of carbon dioxide in the ocean interior is already having an impact on the shellfish industry, particularly along the U.S. West Coast,” said Richard Feely of NOAA’s Pacific Marine Environmental Laboratory, leader of NOAA’s West Coast acidification-observing network and a co-author of the study. “We have been working with the industry to provide an early warning system against the most severe impacts of rising carbon dioxide levels.” Rik Wanninkhof, an oceanographer at NOAA’s Atlantic Oceanographic and Meteorological Laboratory and another co-author, added: “A critical question that warrants continued observations of the ocean is if this uptake can be sustained and what might happen to the Earth’s atmosphere if the ocean is unable to absorb continued increased carbon dioxide.”“A higher concentration of carbon dioxide in our atmosphere would aid photosynthesis, which in turn contributes to increased plant growth,”
how to get acceleration working with veliocity?
Answer:
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2).
Explanation:
Acceleration can be calculated by dividing the change in velocity (measured in metres per second) by the time taken for the change (in seconds). The units of acceleration are m/s/s or m/s 2.
b) Calculate the net work required to bring a 1300 kg car moving at 30 m/s to rest.
I Lolo my name is keshav and
according to einstein's theory of simple relativity (_E + mc(2)_). BLANK is converted into BLANK.
Answer:
energy is converted into mass
Explanation:
List the factors affecting the amount of heat produced in an element
Answer:
.The resistance, R of the conductor. A higher resistance produces more heat.The time, t for which current flows.
.The longer the time the larger the amount of heat produced
.The amount of current,
What's the name of the compound Kl?
Answer: Potassium iodide
Explanation: their you go
Answer:
Potassium iodide
Explanation:
Have a good day
[tex]help \: me \: pls \: [/tex]
plz..
Calculate the speed of a bowling ball that travels 6 meter(s) in 5 second(s). The speed is _______ m/s. (Answer to two decimal places.)
Answer:
Speed is 1.2 m/s
Explanation:
Formula for speed is
S = d/t
Put values
S = 6/5 = 1.2
does the speed of a EM wave depend on its frequency
Answer:
The speed of a wave is independent of its frequency and wavelength. A change in the frequency value will not result in a change in the speed value. Rather, changing frequency will cause a change in the wavelength in such a manner that the speed value turns out the same.
Explanation:
Answer:
no
Explanation:
find the equivalent resistance of 800 ohms, 4 kilo-ohms, and 1500 ohms in series and in parallel.
Answer:
Series 6300 ohmn and parallel 460.83 ohms
Explanation:
Data :
Resistance R1 = 800 ohms
Resistance R2 = 4 kilo ohms = 4000 ohms
Resistance R3 = 1500 omhs
So formula for equalivent series resistance
R = R1 + R2 + R3 = 800 + 4000 + 1500 = 6300ohms
For parallel equalivent resistance
1/R = 1/R1 + 1/R2 + 1/R3 = 1/800 + 1/4000 + 1/1500 =
1/R = 0.0021666666666
R = 460.82949308755 ohms
Describe the sound produced by an instrument of length L that is open at one end. Include pitch, frequency, timbre, nodes and antibodies
The sound produced by an instrument of length L that is open at one end
usually has a high frequency.
What is Sound?This is a form of vibration which travels along an acoustic wave through a
media which could be solid, liquid etc.
Sopubd produced by an instrument which has an open end has a high
frequency and pitch, nodes , timbre and a low antinode. These are all the
properties of sounds by the instrument.
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Answer this question. URGENT!!
Answer:
D)80/10 × 5 × 10^-4 N m^-2
Explanation:
this is the answer that was on my assignment
who is the founder of oersted experiment ?
Answer:
In 1820, Hans Christian Oersted(the founder) developed the oersted experiment to display a relationship between magnetism and electricity.
Explanation:
How many ethic ties, former colonial alliances, and shared languages may effect international trade? Why?
Answer: In the 17th century, as European nations scrambled to claim the already occupied land in the “New World,” some leaders formed alliances with Native American nations to fight foreign powers. Some famous alliances were formed during the French and Indian War of 1754–1763.
Explanation:
please help i’ll mark you
Answer:
What should I do. reply quickly for a quick answer
Answer: put a line across the paper
Explanation:
[tex]\bold{ Choose \: the \: correct \: Answer \: :) \:}[/tex]
Answer:
B and B
Explanation:
Question 1:
The distance is a unit of length, such as miles, meters, kilometers
The correct answer for this question would be 8m
Question 2:
Speed has a unit of length per unit of time.
The correct answer for this would be meters per second
-Chetan K
In a competition, weightlifter 1 lifts a 100 kg weight from the floor. Weightlifter 2
also lifts a 100 kg weight to the same height above the floor, but takes a longer time
to do so. Which of the following statements describes the work done and the power
used by the weightlifters?
Answer:
b
Explanatiobn:
Weightlifter 1 has more power as compared to weightlifter 2 because it takes longer time to lift the weight.
What is Work?
Work is a physics term used to describe the transfer of energy that takes place when an object changes above a distance because of an external force, at least some of which is given in the vector of the dislocation.
The element of the force acting all along the path multiplied by the length of the path can be used to calculate work if the force is constant.
Mathematically, this idea is expressed as W = fd, where W is the effort and f is the force multiplied by d, the distance. Work is completed whenever the force is applied at an angle of with regard to the displacement.
As per the given information in the question,
The power is work done per unit time or if the time will increase, the power will decrease. Power and time are inversely proportional to each other. So, the weightlifter 1 is taking less time than it has more power compared to weightlifter 2.
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Which of the following happens when two positively charged objects are brought near each other?
the potential energy decreases
both a repulsive force and an attractive force is produced
the two objects have no influence on each other
the potential energy increases
What are some forces and motion?
1. What are the things needed by plants to make their own food?
A. water, chemicals and oxygen
B. oxygen and carbon dioxide
C. oxygen and chemicals
D. carbon dioxide, soil and sunlight
of
2. What kind of interaction is shown when worms live in the guts and flesh
a fish?
A. mutualism
B. commensalism
C. predation
D. parasitism
3. What kind of interaction is shown when monkeys in tropical rainforest
compete for food with other animals?
A. mutualism
B. commensalism
C. competition
D. predation
answer quickly.
Answer:
1.d 2.d 3.c
Explanation:
MAINIdea Newton's laws of motion relate the change in an object's motion with the forces acting on it.
Answer:
Newton's laws of motion relate an object's motion to the forces acting on it. In the first law, an object will not change its motion unless a force acts on it. ... In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction
pls help i am in8th grade k12
Answer:
please i dont understand this
differenciate between scalar and vector quantities.
thankyou ~
Answer:
A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector.
The difference between scalar and vector quantities is simply the direction we always consider when dealing with vector quantities.
SCALAR AND VECTOR QUANTITIESScalar quantities are those quantities that have only magnitude but no direction. Examples are;
speedTemperaturemassCurrente.t.cVector quantities are those quantities that have both magnitude and direction. Examples are;
VelocityForceAccelerationMomentume.t.cThe difference between scalar and vector quantities is simply the direction we always consider when dealing with vector quantities.
Therefore, direction is the difference between them.
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