Answer:
Explanation:
electrons are a waste product of bacteria living around plant roots – plants discharge organic matter into the soil, which is broken down by bacteria. It is possible to harvest them using motonless electrodes and turn them into electricity, without affecting the plant’s growth in any way.
Name 3 things that can be taken to reduce erosion and keep our topsoil healthy?
Answer:
Caution with grazing, recreational activities and reclaiming used lands can reduce erosion. For example, drain the soil if it collects standing water. Stay off wet soil. And, carefully fertilize your soil
Explanation:
How much net force is required to accelerate a 50.00kg mass at 4.00 m/s^2
Answer:
Explanation:
F = m*a = 50 * 4 = 200 N
if someone feels intent on fighting with you, what should you do to prevent getting into a fight?
Answer:
avoid verbal argument and walk away
Se debe usar una rampa de 5 m para elevar muebles que pesen 490 N hasta una plataforma a una altura de 2 m. Su propuesta de que la eficiencia de la rampa es del 100%, ¿cuál debe ser la fuerza requerida para levantar cada mueble en la rampa?
Answer:
F = 180 N
Explanation:
To find the required force you first calculate the angle of the ramp, by using the following relation:
[tex]sin\theta=\frac{2m}{5m}=0.4\\\\\theta=sin^{-1}(0.4)=23.57\°[/tex]
Next, you use the Newton second law to know what is the x component (in a rotated coordinate system) of the gravitational force:
[tex]F_x=mgsin\theta[/tex]
the required force must be, at least, the last force Fx. You know that the weight of the object is 490N = mg. Hence, you have:
[tex]F=F_x=(450N)sin(23.57\°)=180N[/tex]
the required force is 180N
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TRANSLATION:
Para encontrar la fuerza requerida, primero calcule el ángulo de la rampa, utilizando la siguiente relación:
Luego, usa la segunda ley de Newton para saber cuál es el componente x (en un sistema de coordenadas girado) de la fuerza gravitacional:
la fuerza requerida debe ser, al menos, la última fuerza Fx. Sabes que el peso del objeto es 490N = mg. Por lo tanto, tienes:
Astronomers are comparing two stars that are known to have the same luminosity. Star A is observed to be 4 times brighter than star B. How far away is Star A compared to Star B?
what is the difference between an ordinary piece of iron and iron magnet?
Answer:
The difference between a piece of ordinary iron and an iron magnet is. The magnetic domains in an iron nail that is brought near a strong magnet. When an ordinary iron nail is removed from a strong magnet
Explanation:
The truck in which
you were seated sank
into the mud. You and
the person driving the
Vehicle want to lift the
truck using a branch.
You apply a force of
600 N to the branch
which acts as a lever.
The rear of the truck
weighs 2,400 N. What
is the mechanical
gain of the lever arm?
Answer:
m = 4
Explanation:
We have,
You apply a force of 600 N to the branch which acts as a lever. It means it is input force, IF = 600 N
The rear of the truck weighs 2,400 N. It means it is output force, OF = 2400 N
The ratio of output force to the input force is equal to the mechanical advantage of the lever arm. It is given by :
[tex]m=\dfrac{2400}{600}\\\\m=4[/tex]
So, the mechanical gain of the lever arm is 4.
What is the electrical force of two punctiform electrical charges of 3ųC and 4ųC respectively at a distance of 10 cm in a vacuum
Answer:
Electrical force, F = 10.8 N
Explanation:
We have,
Charge 1, [tex]q_1=3\ \mu C=3\times 10^{-6}\ C[/tex]
Charge 2, [tex]q_2=4\ \mu C=4\times 10^{-6}\ C[/tex]
Distance between charges is 10 cm or 0.1 m
It is required find the electric force between two charges. The formula used to find the electrical force is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
k is electrostatic constant
Plugging all the values we get :
[tex]F=\dfrac{9\times 10^{9}\times 3\times 10^{-6}\times 4\times 10^{-6}}{(0.1)^2}\\\\F=10.8\ N[/tex]
So, the electrical force between charges is 10.8 N.
Please help me this question
2. The diagram below shows two marbles moving in opposite direction with
speeds as shown.
(a) If the velocity of the 30.0g marble after collision is 0.1m/s to the left
What is the velocity of the 10.0g marble after collision?
(b)Calculate the kinetic energy before and after collision, hence deduce the
value of the kinetic energy lost.
Answer:
THE DIAGRAM ISNT LOADING HOW DO I HELP YOU
Explanation:
A+block+of+1.2kg+is+placed+on+an+included+plane+at+60°+to+the+horizontal.+Calculate.+a.The+force+that+will+make+the+block+to+slide+down+the+plane.B.The+coefficient+of+friction+.C.+The+normal+reaction+d.+The+friction+force
Answer:
a. 10.2 N b. 1.73 c. 58.8 N d. 10.2 N
Explanation:
a. The force that will make the block slide down the plane
This is the component of the block's weight along the plane F = mgsinθ where m = mass of block = 1.2 kg, g = 9.8 m/s² and θ = angle of incline = 60°.
So, F = mgsinθ = 1.2 kg × 9.8 m/s² × sin60°.= 10.18 N ≅ 10.2 N
b. The coefficient of friction
The coefficient of friction, μ = tanθ = tan60° = 1.73
c. The normal reaction.
This is equal to the vertical component of the block's weight. So, F = mgcosθ. Substituting the values for the variables from above, we have
F = mgcosθ = 1.2 kg × 9.8 m/s² × cos60°.= 58.8 N
d. The frictional force
Since the block does not slide, there is no net force on it. If f is the frictional force, then
F - f = ma. Since a = acceleration = 0,
F - f = 0
f = F = mgsinθ = 1.2 kg × 9.8 m/s² × sin60°.= 10.18 N ≅ 10.2 N
The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment?
Answer: there is no sound in space
Explanation: there is no vacum in space for sound to travel, therfore no sound waves
After pulling the string tight, Miguel talked into his aluminum can. Brian could hear Miguel's voice through the aluminum can attached to the string. Which of the following best explains the sound Miguel made?
A.
The sound traveled through the air but not through the string.
B.
The sound traveled through the string but not through the air.
C.
The sound traveled through the string and the air at different speeds.
D.
The sound traveled through the string and the air at the same speeds.
Answer:
option C is correct✅✅✅✅✅
...............
MRU(movimiento rectilineo uniforme) un movil viaja en linea recta con una velocidad media de 12metros /segundos durante 9segundos y luego con una velocidad media de 4.8metros/segundos durante 7 segundos siendo ambas velocidades al mismo sentido. a) cual es el desplazamiento total del viaje de 16 segundos? b) cual es la velocidad media del viaje completo?
Answer:
a) 141.6m
b) 8.4m/s
Explanation:
a) to find the total displacement you use the following formula for each trajectory. Next you sum the results:
[tex]x_1=v_1t_1=(12m/s)(9s)=108m\\\\x_2=v_2t_2=(4.8m/s)(7s)=33.6m\\\\x_T=x_1+x_2=108m+33.6m=141.6m[/tex]
hence, the total distance is 141.6m
b) the mean velocity of the total trajectory is given by:
[tex]v_m=\frac{v_1+v_2}{2}=\frac{12m/s+4.8m/s}{2}=8.4\frac{m}{s}[/tex]
hence, the mean velocity is 8.4 m/s
Besides a rope, what other kinds of waves move as transverse waves?
Answer:
ocean waves and ripples from a stone being thrown in a pond.
Explanation:
How fast is the van traveling relative to the ground
Answer:
5238747643782 mph
Explanation:
i assure u it is
Find the correct statement
The disturbance created by a source of sound in the medium do not travels through the medium but the particles of the medium does.
The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium
The particles and the disturbance created by a source of sound in the medium do not travels through the medium
The disturbance created by a source of sound in the medium travels through the medium along with the particles of the medium
Answer:The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium
Explanation:i hope this is right
The maximum range of projectle is R° if projected at angle of 45°. It'll be 300% of Range of projectile if projected at angle? a) 30° b) 45° c) 60° d) 76° Correct answer with good explanation
Answer:
The maximum range is 300% of the range of the projectile is projected at an angle of 9.74°.
None of the options are correct.
Explanation:
Normally, ignoring air resistance, for projectile motion, the range (horizontal distance travelled) of the motion is given as
R = (u² sin 2θ)/g
where
u = initial velocity of the projectile
θ = angle above the horizontal at which the projectile was launched
g = acceleration due to gravity = 9.8 m/s²
The range is maximum when θ = 45°
R when θ = 45° is
R = (u² sin 90°)/g = (u²/g)
We are then told that this maximum range is 300% of the value obtainable for the range at a particular angle
Maximum range = 3R
(u²/g) = 3(u² sin 2θ)/g
Sin 2θ = (1/3)
2θ = sin⁻¹ (1/3) = 19.47°
θ = (19.47°/2) = 9.74°
Hope this Helps!!!
It might be a good idea to talk to your parents about alcohol because:
might stumble upon this substance one day and be curious about what it does.
2. Two children play a game of catch, running back and forth to catch each throw from the other. Assume the children are standing 5m apart with one child standing at the origin before the game begins.
The ball makes the following motions:
5 meters right, 8 meters left, 3 meters right, 6 meters left, 15 meters right, and 4 meters left.
Part A:
Calculate the total distance traveled by the child on the left.
Part B:
Calculate the total displacement of the child on the right.
Answer:
Part A: 24 m
Part B: 9 m
Explanation:
Part A:
The children takes turns so the child on the left moves with when the ball moves 5 meters right, 3 meters right, 15 meters right, while the child on the right moves with when the ball moves 8 meters left, 6 meters left, 4 meters left
The total distance traveled by the child on the left is given by the relation;
Initial position of the child on the left = 5 m
First motion of the child on the left = Distance to origin + first distance ball moved
∴ First motion of the child on the left = 5 + 5 = 10 m location of child = 5 m left
Second motion of the child on the left = location of child - position of the ball = 5 - (5 - 8 + 3) = 5 m left location of the child = 0 m
Third motion of the child on the left = location of child - position of the ball = 0 - (6 - 15) = 9 m right
Total distance traveled by the child on the left = 10 + 5 + 9 = 24 m
Part B:
First motion of the child on the right = Distance of child to origin + second position of ball
Initial location of the child on the right = 0 m
∴ First motion of the child on the right = 0 + (5 - 8) = -3 m location of child = 3 m left
Second motion of the child on the right = location of child - current position of the ball = 3 - 6 = -3 m left location of the child = -6 m
Third motion of the child on the right = location of child - position of the ball = -6 - 5 = 11 m right
Final location of the child on the right = 9 m right
Total displacement of the child on the right = Final location of the child on the right - Initial location of the child on the right 9 - 0 = 9 m.
The peak wavelength for the blackbody curve a star is in the UV range assuming the radiation from the star can reach earth would you be able to see it yes or no
Answer:
No
Explanation:
We would not be able to see the star because its radiation is in the UV range. For the star to be visible, it has to be in the visible spectrum of light for me to be able to see it with my eyes.
which of the following us a surface phenomenon
Answer:
Evaporation
Explanation:
Evaporation is a surface phenomenon as the molecules of the surface gets sufficient energy to overcome the force of attraction which will help in converting to the vapor phase.
In which direction does the magnetic field in the center of the coil point ?
Answer:
Answer:
from right
Explanation:
right
Answer:
Left
Explanation:
Finger Grasp Process thingy
An ant is on the pendulum bob of a clock. What would be its displacement in one time period?
Answer: the displacement is 0
Explanation:
Displacement is defined as the difference between the final position and the initial position.
now, one time period is defined as the time that the pendulum needs to do a full cicle (so after one time period, the position of the pendulum returns to the same place) this means that the final position and the initial position is the same, then the displacement is 0.
Una lancha sube y baja por el paso de las olas cada 3.2 segundos, entre cresta y cresta hay una distancia de 24.5 m. ¿cual es la rapidez con la que se mueven las olas?
Answer:
7.656 m/s
Explanation:
El sonido viaja a cierta velocidad y tiene una frecuencia y longitud de onda. La relación entre la velocidad del sonido (V), su frecuencia (f) y la longitud de onda (λ) es la misma que para todas las ondas, está dada por la ecuación:
V = fλ
pero f = 1/T
∴ V = λ/T
donde T es el período
Dado que:
período (T) es el tiempo necesario para subir y bajar = 3.2 s
La distancia entre dos crestas es la longitud de onda (λ) = 24.5 m
V = λ/T = 24.5 / 3.2 = 7.656 m/s
V = 7.656 m/s
The beginning of a river is called the
mouth
source
watershed
tributary
Answer:
head of water or mouth
Explanation:
hope this helpsAnswer:
The beginning of a river is called the source.
Explanation:
I got this correct on oddyseyware
Water in the Antarctica usually exists as ice ,making it very difficult to use the water or conduct experiments reqiring the water to be in liquid state .A coffee addicted physisits stationed at a research base requires about 0.8 kg of ice for his coffe on the hour
Answer:
2730.304 KJ
Explanation:
How much heat is required to convert 0.8 kg of ice at -35°C into steam at 100 C?
Given that:
mass of ice (m) = 0.8 kg = 800 g
Initial temperature ([tex]T_i[/tex]) = -35°C = 238 K
final temperature ([tex]T_n[/tex])= 100°C = 373 K
Specific heat of ice ([tex]S_i[/tex]) = 2.108 J/g.K
Specific heat of water ([tex]S_w[/tex]) = 4.18 J/g.K
Latent heat of fusion ([tex]L_f[/tex]) = 334 J/g.
Latent heat of vaporization ([tex]L_v[/tex]) = 2230 J/g.
[tex]\Delta T=T_n-T_i=373-238=135K[/tex]
Total heat (Q) required to increase the temperature of ice from the initial temperature of 238K to final temperature of 373 K is given by the equation:
[tex]Q=m\Delta TS_i+m\Delta TS_w+mL_f+mL_v\\Q=800(135)*2.108+800(135)*4.18+800*334+800*2230\\Q=227664+451440+267200+1784000=2730304J\\Q=2703.304KJ[/tex]
what is the difference between transverse wave and longitudinal wave?
Answer:
Transverse waves are always characterized by particle motion being perpendicular to wave motion. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
8a.The mass of a girl is 40 kg. Calculate her weight. (g = 9.8 m/s)
b.The weight of a stone is 98 N. Calculate its mass. (g = 9.8 m/s)
Explanation:
Here,
Given,
Mass(m)=40 kg
Gram=9.8m/s
Now,
Weight=m x g
or, weight= 40x9.8
=392.0
Hope you have understood
Mark me as brainliest plz
Answer:
The right answer of 8 a is 392 Newton
The right answer of 8b is 10 kg
Look at the attached picture
Hope it will help you
Good luck on your assignment
as a car drives past a person standing on a sidewalk, the driver keeps a hand on the horn. how does the pitch of the horn differ for the driver and the person standing on the sidewalk?
Answer:
While the car is going towards the standing person on the sidewalk he is listening the pitch of the horn higher then it is.
When the car passes the person on the sidewalk and goes away, the horn's pitch become lower (for the person standing on the sidewalk).
For the driver, the pitch is always the same.
Explanation:
Is the doppler effect.
When the car is approaching, the sound waves must travel a smaller space than the previous one and they take less time to reach the standing person. So, sound waves reach the standing person with a higher frequency.
It happens the opposite when the car is going away: the sound waves need to travel more space and take more time to reach the person on the sidewalk. So, the frequency of the waves is lower.
the lambda baryon has the quark composition uds. which particle has the same electric charge as the lambda baryon?
Answer:
A particle that has the same charge as lambda baryon is a neutron.
Explanation:
A lambda baryon is a subatomic particle that is made up of three quarks - uds (up, down and strange). It contains the same number of protons and neutrons, and an isotopic spin of 1. It is a family of hadrons just like mesons.
A quark is a fundamental or basic particle that make up a matter. It can combine with two or more to form composite particles (e.g neutron or proton). These basic particles are held by a very strong attractive force. The composite particles are the constituents of the nucleus of an atom.
The particle that has the same electric charge as the lambda baryon is neutron.
What quarks as seen in Lambda?The lambda is known to be a baryon that is composed of three quarks. They are:
An upA down A strange quarkThe neutron is known to be a kind of subatomic particle that is often written as n or n⁰ . It is known to have a neutral charge and its composition is that of 1 up quark and 2 down quarks.
See full question below
The lambda baryon has the quark composition uds. Which particle has the same electric charge as the lambda baryon?
1. neutron
2 electron
3. proton
4 antimuon
Learn more about electric charge from
https://brainly.com/question/1487561