Answer:
They store floodwater
Explanation:
A person starts running from 2 m/s to 6 m/s in 2 seconds.
Calculate the person's acceleration.
Var
Variables:
Solve:
F
Formula:
Answer:
2 m/s²
Explanation:
From the question given above, the following data were obtained:
Initial velocity (u) = 2 m/s
Final velocity (v) = 6 m/s
Time (t) = 2 s
Acceleration (a) =?
The acceleration of the person can be obtained as follow:
v = u + at
6 = 2 + (a×2)
6 = 2 + 2a
Collect like terms
6 – 2 = 2a
4 = 2a
Divide both side by 2
a = 4 / 2
a = 2 m/s²
Therefore, the acceleration of the person is 2 m/s²
given a force of 100 N and a acceleration of 5 m/s, what is the mass
Answer:
[tex]force = mass \times acceleration \\ 100 = m \times 5 \\ m = \frac{100}{5} \\ m = 20 \: kg[/tex]
A car traveling towards east at 40 m/s and turns towards left and travels at same speed. The change in velocity is
Answer:
Explanation:
In physics the term velocity is always a vector. All that means is that it's got a direction with it. which also means this vehicle that was traveling in the east direction and then turned left is and is now , maybe traveling in a north direction. Making the guesses that the car was traveling due East and is now traveling due North, then the car has changed it's velocity by 40 m/s. By The Way do you happen to know how fast 40 m/s is? it's about 144 Kph :0 or about 90 MPH so this guy is also speeding :D, write him a ticket ... :P
Suppose you are working on green house, which light you would
use for their growth?
Answer:
Fluorescent lighting is usually used.
Explanation:
Answer:
HPS lighting or LED light
Explanation:
HPS light is well known choice with a proven track record for growers. While you can also use LED lights as an alternative to incandescent or HPS fixtures for day length extension.
Paper clips, nails, and scissors all act as which of the following?
electromagnets
ion magnets
temporary magnets
I think its ion magnets correct me if I'm wrong
Which is a pollutant associated with high-tech gadgets in landfills?
A. Chromium
B. Steel
C. Carbon Dioxide
D. Hydrogen
Answer:
The answer of this is question is A.
Answer:
A.
Explanation:
sana makatulong po ❤❤
How does this relate to Newton's second law?
Two balls with different weights (tennis ball and basket ball) are dropped from the same height to see which one will land first
Answer:
In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.
Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.
Explanation:
In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.
Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.
A type of organism that makes its own food. __________
The highest taxonomic classification of organisms.__________
The process through which organisms make new organisms of the same kind. _______
The taxonomic classification below domains._________
A type of organism that is made of more than one cell and is more specialized and eukaryotic.__________
A characteristic passed from female and male parents to their offspring.________
FILL IN THE BLANKS PLEASEEE WILL GIVE BRAINLIEST AND 50 POINTS
Answer:
1. An autotroph
2. Domain
3. Reproduction
4. Kingdom
5. Multicellular Organism
6. Genetic trait
Explanation: Took Bio honors 1 & 2
Two charges are separated by a distance r. The distance between the charges is tripled to 3r. If the original force between the charges was 45N what is the new force between the charges A.5N B.15N C.75N D.135N
Answer:
5N
Explanation:
The formula formula for calculating the force between charges is expressed as;
F = kq1q2/r²
If two charges are separated by a distance r and a force between them is 45N, then;
45 = kq1q2/r² ....1
If the distance between the charges is tripled to 3r, then;
F = kq1q2/(3r)²
F = kq1q2/9r² ... 2
Divide both expressions
45/F = (kq1q2/r²)/(kq1q2/9r²)
45/F = kq1q2/r² * 9r²/kq1q2
45/F = 9
9F = 45
F = 45/9
F = 5N
Hence the new force between them will be 5N
How old is Earth and what do we use to keep track of major Earth events?
1. An object of mass 300 kg is observed to
accelerate at the rate of 1 m/s. Calalate the
force required to produce this acceleration.
Answer:
The force required will be "300 N".
Explanation:
The given values are:
Mass of object,
m = 300 kg
Acceleration,
a = 1 m/s
Now,
The force will be:
⇒ [tex]F=m\times a[/tex]
On substituting the values, we get
⇒ [tex]= 300\times 1[/tex]
⇒ [tex]=300 \ N[/tex]
Four different living organisms are shown on the right. Which statement is true for all of the organisms shown?
Answer:
they are all made of cells
GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 25pts-
Answer:
A, and D are the answers
Explanation:
The pulley. It is located where the bicycle chain and gears are. The chain is wrapped around the pulley which turns and causes the wheel to turn on its axle.
A laser pulse of duration 25 ms has a total energy of 1.4 J. The wavelength of this radiation is
567 nm. How many photons are emitted in one pulse? Let 1 eV = 1.60 x 10-19 J, the mass of
an electron m=9.11 10-31
kg, the speed of light c= 3.00 x 108 m/s, and Planck's constant h
= 4.136 10-15 eV .s.
Answer:
n = 4 x 10¹⁸ photons
Explanation:
First, we will calculate the energy of one photon in the radiation:
[tex]E = \frac{hc}{\lambda}\\\\[/tex]
where,
E = Energy of one photon = ?
h = Plank's Constant = 6.625 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s
λ = wavelength of radiation = 567 nm = 5.67 x 10⁻⁷ m
Therefore,
[tex]E = \frac{(6.625\ x\ 10^{-34}\ J.s)(3\ x\ 10^8\ m/s)}{5.67\ x\ 10^{-7}\ m}[/tex]
E = 3.505 x 10⁻¹⁹ J
Now, the number of photons to make up the total energy can be calculated as follows:
[tex]Total\ Energy = nE\\1.4\ J = n(3.505\ x\ 10^{-19}\ J)\\n = \frac{1.4\ J}{3.505\ x\ 10^{-19}\ J}\\[/tex]
n = 4 x 10¹⁸ photons
A bowling ball with 218 J of kinetic energy is moving at 8.0 m/s. What is the mass of the bowling ball?
What is a voltage divider?
Answer:
please give me brainlist and follow
Explanation:
In electronics, a voltage divider (also known as a potential divider) is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). Voltage division is the result of distributing the input voltage among the components of the divider.
What part of the roller coaster has the lowest potential energy?
a pine raft (density = 373 kg/m^3) has a volume of 1.43 m^3. How much of the raft's volume is below the water line? Unit is m^3
Answer: 0.5334
Explanation:
i got it right on accellus :p
Volume of value V = 0.5333 [tex]m^{3}[/tex] is below the water line .
What is Archimedes principal ?Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid.
F(b) = rho*g*V
F(b) = buoyant force
rho = fluid density
g = acceleration due to gravity
V = fluid volume
given
density of raft = 373 kg/[tex]m^{3}[/tex]
volume of raft = 1.43 [tex]m^{3}[/tex]
since, density = mass / volume
mass of raft = density * volume
= 373 * 1.43 = 533.3 kg
using Archimedes principal
Force = density of liquid * volume of liquid displaced * acceleration due to gravity
mg = 1000 * V * 9.8
533.3 * 9.8 = 1000 * V * 9.8
V = 0.5333 [tex]m^{3}[/tex]
To learn more about Archimedes principal here
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why is a screw a kind of inclined plane
Geothermal energy is an alternative energy source, although it is not resourceful enough to replace more than a minor amount of the Earth’s energy needs. Why is this?
Answer: However, it is not resourceful enough to replace more than a minor amount of the Earth's energy needs. Drilling through the Earth to reach areas hot enough to create steam is possible, but very expensive and difficult. .
Explanation:
Can anyone help me with this question please
I’ll mark as brainliest
No links.
the transverse Wave which is Answer:2
Answer:
1
Explanation:
amplitude is the maximum distance from the rest of the particles. amplitude is thus measured from the rest position to the peak of a crest or of a trough.
as seen below, graph 1 has an amplitude of 1 while both graph 2 and 3 has an amplitude of 2.
A vertical piston-cylinder device initially contains 0.1 m^3 of air at 400 K and 100 kPa. At this initial condition, the piston is resting on a stop. The piston-cylinder device is connected to a supply line with air at 400 K and a pressure of 500 kPa. The valve between the supply line and the piston-cylinder device is opened and is left open until the pressure in the piston-cylinder device reaches 500 kPa. The piston is observed to start moving when the pressure in the cylinder is 200 kPa and the piston continues to rise until it reaches a second stop. At the second stop, the piston-cylinder volume is 0.2 m^3 . The final temperature and pressure in the piston-cylinder device are 440 K and 500 kPa, respectively. Determine the heat transfer to or from the piston-cylinder device for the filling process Determine heat transfer (kJ) during the entire process.
Answer:
[tex]Q=-38.15kJ[/tex]
Explanation:
From the question we are told that
Piston-cylinder initial Volume of air [tex]v_1=0.1 m^3[/tex]
Piston-cylinder initial temperature [tex]T_1=400k[/tex]
Piston-cylinder initial pressure [tex]P_1= 100kpa[/tex]
Supply line temperature[tex]T_s=400k[/tex]
Supply line pressure [tex]P_s= 500kpa[/tex]
Valve final pressure [tex]P_v=500kpa[/tex]
Piston movement pressure [tex]P_m=200kpa[/tex]
Piston-cylinder final Volume of air[tex]v_2=0.2 m^3[/tex]
Piston-cylinder final temperature [tex]T_2=440k[/tex]
Piston-cylinder final pressure [tex]P_2= 500kpa[/tex]
Generally the equation for conservation of mass is mathematically given by
[tex]Q=m_2 \mu_2-m_1 \mu_1 +W-(m_2-m_1)h[/tex]
where
Initial moment
[tex]m_1=\frac{p_1 V_1}{RT_1}[/tex]
[tex]m_1=\frac{100*0.1}{0.287*400}[/tex]
[tex]m_1=8.7*10^-^2kg[/tex]
Final moment
[tex]m_2=\frac{p_2 V_2}{RT_2}[/tex]
[tex]m_1=\frac{500*0.3}{0.287*440}[/tex]
[tex]m_1=79*10^{-2}kg[/tex]
Work done by Piston movement pressure
[tex]W=Pd[/tex]
[tex]W=P(v_2-v_1)[/tex]
[tex]W=200(0.2-0.1))[/tex]
[tex]W=20000J[/tex]
Heat function
[tex]h=cT_1[/tex]
[tex]h=1.005(400)[/tex]
[tex]h=402[/tex]
Therefore
[tex]Q=(0.792*0.718(440)-0.0871*0.718(400)+20-(0.792-0.087)*402))[/tex]
[tex]Q=-38.15kJ[/tex]
It is given mathematically that the system lost or dissipated Heat of
[tex]Q=-38.15kJ[/tex]
An elephant's legs have a reasonably uniform cross section from top to bottom, and they are quite long, pivoting high on the animal's body. When an elephant moves at a walk, it uses very little energy to bring its legs forward, simply allowing them to swing like pendulums. For fluid walking motion, this time should be half the time for a complete stride; as soon as the right leg finishes swinging forward, the elephant plants the right foot and begins swinging the left leg forward.
Answer:
is this the full question?
Explanation:
Pls help meh Kdjdjeidjndiejdididjdjjdidjdjdiejd
Answer:
i think b
Explanation:
i'm not sure
Answer:
I think both pure substance and an element .
hope it is helpful to you ☺️☺️
Which object is an example of a mechanical wave?
A. light from a flashlight
B. microwaves used to heat food
C. police siren
D. sunlight
Answer:
C.
Explanation:
Hope It Helps
brainliest please
Answer:
C. police siren
Explanation:
Sound waves are mechanical waves
An incident ray that passes through the vertex of a convex lens:
F
F
c
A. refracts inward, at an angle equal to the angle of incidence,
B. continues in a straight line without refracting.
C. refracts parallel to the axis of the lens,
D. refracts outward, at an angle equal to the angle of incidence.
A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed. Both pipes are the same size and have the same number of molecules. The diagram above shows the pipes now, before they have touched. Use the information in the diagram to answer the question.
How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?
Answer:
They become the same exact tempature
Explanation:
Since they got connected it should be the same.
the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch by using same temperature.
what is temperature ?Temperature is the measure of hotness or coldness expressed in terms of any of several arbitrary scales and it indicate the direction in which heat energy will spontaneously flow from a hotter body to a colder body.
It is not the equivalent of the energy of a thermodynamic system like burning match is at a much higher temperature than an iceberg whereas the total heat energy contained in an iceberg.
Temperature which is similar to pressure or density known as intensive property that is independent of the quantity of matter is considered as distinguished from extensive properties, such as mass or volume.
For more details regarding temperature, visit
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what is a magnetic field? how could you visualize one?
Answer:
A magnetic field is what causes gravity basically
Explanation:
To visualize a magnetic field think of 2 ovals on the opposite side of each-other, like one oval on the top of a circle and one on the bottom, that's how id visualize it
I'm stuck between B and C
In the problem, I know the potential energy increases because the height increases.
A block is at the bottom of a frictionless ramp and is given a kick so that it has some initial velocity and starts to slide up the ramp. There
is no air resistance. Which of the following is true of the energy of the block as it slides?
(A) Its potential energy will increase; its kinetic energy will decrease.
(C) Both its potential and kinetic energies will increase.
(B) Its potential energy will decrease; its kinetic energy will increase.
(D) Both its potential and kinetic energies will decrease.
Answer:
Explanation:
The answer is A. First of all, due to the First Law of Thermodynamics, energy cannot be created or destroyed, it only changes form. That being said, it is impossible for the PE and the KE to both increase or decrease at the same time. The second one starts decreasing, the other starts increasing at the exact same rate. PE exists or is at its highest when an object has the potential to fall to a point lower than it is, and it is at this point where Kinetic energy is the lowest. If this block is kicked UP a ramp, which is odd but there you have it, the potential energy increases as it gets higher off the ground. Because of gravity, and assuming that once the block is kicked, the foot that kicked it is no longer important to it (meaning it's not being pushed up, it's just kicked once and that's it) and it will slow down very quickly. KE exists where there is a great amount of velocity.
The answer is A.
Why are solar storms a concern to Earth?