Your answer is in the attachment . Hope this helps.
The impact of pesticides on the ecological systems.
(marks 5)
Explanation:
Pesticides are those substance whoch increase the fertlite rate of the soil but it will damage rhe soil it remine from a long time it descrese the rate of fertize rate
the power of a bulb is 100 watt .what does it mean
Answer:
Explanation: 100 watts is a unit of power.
A watt is also the amount of energy being consumed. So the more watts the brighter the light bulb is lit.
hey plz solve this question I will mark as the brillianest plzzzzzzzzzzzzzzzzzzzz
Explanation:
I hope it helped U
stay safe stay happy
Round 0.010229 to four sig figs
It would be 0.01023.
0.010229 has 5 sig. fig.'s (leading zeros do not count)
So rounding to 4 sig. fig.'s is just a matter of rounding off the last digit, which leaves you with 0.01023.
why is there potential for wind energy in the upper himalayanx
Answer:
Favorable sites include the tops of smooth, rounded hills; open plains and water; and mountain gaps that funnel and intensify wind. Wind resources are generally more favorable for electricity generation at higher elevations above the earth's surface
any three difference between distance and displacement
Answer:
1.) distance is always positive while displacement can be negative as well.
2.) distance cannot be 0 but displacement can be 0.
3.) distance is a scalar quantity while displacement is vector quantity.
Is the sentence "the temperature outside is 250 C." Qualitative or quantitative
Answer: Quantitative
Explanation: because quantitative is numbers
ОООО
A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?
Distance: 0 m & displacement: 400m
Distance: 400 m & displacement:0m
Distance: Om & displacement:4 m
Distance: 4 m & displacement: Om
Answer:
A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?
Distance: 400 m & displacement:0m
Explanation:
Option B is the answer.
Hope it helps.
Between which types of elements do ionic bonds occur, and how do electrons act within the bond
o nonmetals and nonmetals, electrons shared
o metals and metals, electrons freely moving
O metals and nonmetals, electrons transferred
nonmetals and metals, electrons shared
Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.
the real answer is
O metals and nonmetals, electrons transferrednonmetals and metals, electrons shared
2 ways that angular and linear momentum are alike and different
Answer:
Angular momentum is inertia of rotationmotion. Linear momentum is inertia oftranslation motion. The big difference is that the type of motion which is related to each momentum is different.
in the Newton's Third Law of Motion state three characteristics
Answer:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
Two horses are pulling a box in two different directions as shown in the below image. The image shows one 30.0 N force due north and one 30.0 N force due east.
What is the magnitude of the force needed to stop the horses and bring the box into equilibrium? Describe your calculations. Where would you locate the rope to apply the force?
Explanation:
'What is the magnitude of the force needed to stop the horses and bring the box into equilibrium?' ≈42N; according to the vectors rules.
'Where would you locate the rope to apply the force?' - in point D.
PS. zoom out the attached picture.
Slove these problem physics
Answer:
element name = neon
no of proton = 10
no. if neutron = 9
atomic no. = 10
atomic weight = 20.17179u
it lies in group 18 and period 2
it is nonmetal because it is a noble gas .
hope this helped you ☺️
Who exerts more pressure? a) A girl of 50 kg, wearing heels with an area of 1 cm2. b) An elephant of 4000 kg with foot area of 250 cm2.
Answer:
The girl exerts more pressure.
Explanation:
Pressure can be defined as the force exerted normally or perpendicularly per unit area.
i.e P = F/A
Girls
Area of the heel = 1cm² = 10^(-4) m²
Force = mg = 50 × 10 = 500N
Pressure =
[tex] \frac{500}{10 ^{ - 4} } [/tex]
[tex] = 5 \times {10}^{6}[/tex]
Elephant
Area = 250cm² = 2.5 x 10^(-2)b m²
Force = mg = 40000N
Pressure =
[tex] \frac{40000}{2.5 \times {10}^{ - 2} } [/tex]
[tex] = 1.6 \times {10}^{6} [/tex]
ram takes 2 minutes to cover a distance of 600 meter. calculate his speed
A 210 Ohm resistor uses 9.28 W of
power. How much current flows
through the resistor?
(Unit = A)
[tex]\boxed{\sf P=I^2R}[/tex]
[tex]\\ \sf\longmapsto I^2=\dfrac{P}{R}[/tex]
[tex]\\ \sf\longmapsto I^2=\dfrac{9.28}{210}[/tex]
[tex]\\ \sf\longmapsto I^2\approx0.04[/tex]
[tex]\\ \sf\longmapsto I\approx\sqrt{0.04}[/tex]
[tex]\\ \sf\longmapsto I\approx\sqrt{\dfrac{4}{100}}[/tex]
[tex]\\ \sf\longmapsto I\approx\dfrac{\sqrt{4}}{\sqrt{100}}[/tex]
[tex]\\ \sf\longmapsto I\approx\dfrac{2}{10}[/tex]
[tex]\\ \sf\longmapsto I\approx0.2A[/tex]
Answer:
.21
Explanation:
acellus
true or false
energy can neither be created nor be destroyed
Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. ... In essence, energy can be converted from one form into another.
So , the answer is true
Two astronomers are viewing temperature data from each of the sun's layers, but the layers aren't identified. Describe one way the scientists can use temperature to identify which layer they are studying.(1 point) The highest temperatures are from the corona. The highest temperatures are from the corona. The lowest temperatures are from the photosphere. The lowest temperatures are from the photosphere. The lowest temperatures are from the core. The lowest temperatures are from the core. The highest temperatures are from the radiative zone.
Here we can study the different temperatures of each one of the layers of the sun.
We will find that the way that the scientist can identify which layer are they studying is "The lowest temperatures are from the photosphere."
A brief description of the temperature of each layer is:
Center of the sun: about 15 million K
Radiative Zone: Goes from 7 million K to 2 million K.
Convection Zone: goes from 2 million K to 5800K
Photosphere: Is in average 5800 K , but there are sunspots with lower temperatures, of around 3800 K.
Chromosphere: goes from 4300 K to 8300 K
Corona: Around 2 million K.
So now we can analyze each of the options to see which ones make sense.
A) The highest temperatures are from the corona.
This is false, we can see that in the center and in the radiative zone we have larger temperatures than in the corona.
B) The lowest temperatures are from the photosphere.
While on average the temperature of the photosphere is larger than the smaller temperature of the chromosphere, in the photosphere we have the sunspots, and there we have the smallest temperatures in the whole sun, so this is true.
C) The lowest temperatures are from the core (or center).
Clearly false, there we have the larger temperatures.
D) The highest temperatures are from the radiative zone.
Again false, the larger temperatures are in the center.
So the only true option is "The lowest temperatures are from the photosphere."
If you want to learn more, you can read:
https://brainly.com/question/12117482
Answer:
The lowest temperatures are from the photosphere
Explanation:
I just took this quick check on connexus
Give reason for the following:
a) An inflated balloon was pressed against a wall after it has been rubbed with a
piece of synthetic cloth. It was found that the balloon sticks to the wall.
b) When an object is thrown up, it comes back to ground.
c) Mountaineers suffer nose bleeding at higher altitudes.
d) Foundations of high rise buildings are kept wide.
e) Deep sea divers or high altitude fliers wear special suits.
f) Walls of a dam are thickened near the base.
a) An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. This is because a positive and negative electric charge is produced, therefore the balloon sticks to the wall.
b) When an object is thrown up, it comes back to ground because of gravitational attraction force of earth.
c) Mountaineers suffer nose bleeding at higher altitudes because the oxygen level decreases with increase in altitude, which the body cannot adjust.
d) Foundations of high rise buildings are kept wide because more is the area of contact, less is the pressure efforts. So, foundations are wide so as to decrease the possibility of the building from falling down.
e) Deep sea divers or high altitude fliers wear special suits so as prevent their body from being crushed by the water pressure. Since water pressure is maximum at deep seas and oceans, therefore, more is the risk of being injured.
f) Walls of a dam are thickened near the base so that the dam can handle the kinetic energy pressure and prevent itself from breaking down, which if not, can lead to flooding.
HOPE IT HELPS...
How are the oscillating magnetic and electric fields of an electromagnetic wave positioned relative to each other?
A) They are parallel to each other.
B) The magnetic field is rotated 45° from the electric field
C) the electric field is rotated 45° from the magnetic field.
D) They are perpendicular to each other
Answer:
D.
for the scalar product between two vectors to be 0 either one of thm is zero vector or they are perpendicular to each other
what is gravitational ? what are the factors that affect gravition ? witre the SI unit of gravition
The gravitational force is a force that attracts any two objects with mass. Two major factors, mass and distance, affect the strength of gravitational force on an object.Newtons kg-2 m2 is it's SI unit.
what is molecular formula give short answer
Explanation:
molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.
Answer:
The symbollic representation of a molecule of an element or a compound present in a molecule is called molecular formula.
For example: molecular formula of sodium chloride is NaCl.
For water, which takes more energy, melting or evaporating?
Answer:
melting
Explanation:
that works best
why is the base of the kettle made of plastic not metal?
Answer:
The metal base and the plastic housing are sealed together to complete the tea kettle body.
Explanation:
hope this helps :D
Name the component that the resistance decreases as the current increases.
Answer:
LDRs and thermistors
Light dependent resistors or LDRs are made of semiconductor material. Their resistance decreases as the light intensity increases. ... Their resistance decreases as the temperature increases.
You push a shopping cart for fun with a force of 60N. If the shopping cart has a mass of 12kg, what is the
acceleration of the cart?
Answer:
[tex]\huge\boxed{\sf a = 5 \ ms^{-2}}[/tex]
Explanation:
Given:
Force = f = 60 N
Mass = m = 12 kg
Required:
Acceleration = a = ?
Formula:
F = ma
Solution:
Rearranging formula
a = F / m
a = 60 / 12
a = 5 ms⁻²
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Peace!true or false
the bounciness of a ball changes with temperature
true
false
Answer:
False
Explanation:
This depends on how much air is in the ball, I think
An experiment is conducted to determine how the arm length of a pendulum affects its period. The experimental design calls for varying the length of the arm and the mass of the bob.
Which is true about this experiment, based on good experimental design?
Only the arm length should be changed. The mass should remain the same.
Only the mass should be changed. The arm length should remain the same.
The force applied to the mass should be varied for each trial.
The material the arm is made of should be varied for each trial.
Answer:
Option (I)
Explanation:
The independent varible is arm length. Therefore, to eliminate the effect of other factors and make a valid and effective conclusion, only the arm length should be changed, while other factors (mass, force and materials) should remains the same.
Answer: Only the arm length should be changed. The mass should remain the same.
Explanation:
Relative densoty hydrometer puridy of milk
Answer:
Hope this can help u
Explanation:
A lactometer is a specialized hydrometer used measure the relative density and purity of milk. ... If the milk is pure the readings will be close to 1 and if the amount of water in the milk increases then the markings will be close to 3.
When is the pressure of the man on the ground more – lying position or standing
position? Explain.
Hi,
The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.
To the point, a man standing position on the ground had more pressure.
More is the area of contact, less is the pressure efforted.
Thank you...