Answer:
Afforestation is the planting or adding of trees in an area where there was never a forest or plantation. This is a method to create a new forest. Reforestation is the replanting of trees in an area where there was once a forest which was destroyed or damaged.
Explanation:
3.The space heater in a room does not have a fan, but after a few minutes you feel warm air moving by you. What type of energy transfer?
A wave has a frequency of 2 Hz. How many waves are produced in one minute?
Answer:
see below
Explanation:
2 Hz, means 2 complete waves are produced in one second, so
2 waves ----- 1 second
2 x 60 -------1 x 60
120 waves ------60 seconds
hope this helps,
please mark it
Given:
Frequency= 2Hz
Number of waves = ?
The number of waves that is been formed per seconds = frequencyThen since frequency= 2Hz then there are 2 complete waves that is formed in 1 seconds1 seconds= 2 wavesBut 60 seconds = 1 minutesNumber of waves produced in 1 minutes ( 60 seconds) = ( 2×60)= 120 waves
Therefore, the number of waves that will be formed in one minute is 120 waves
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An object is in front of a converging lens of f = 15 cm, what is the distance of the object if you know that the distance of the image is 20 cm ?
Answer:
ikn
Explanation:
Answer:
the distance is 15+20=35 cm
an elevator provides 21 000 w of power during a 12 s ride. how much work does the elevator do?
Answer:
252000 J
Explanation:
W = Pt
W = (21000 w)(12 s)
W =252000 J
How can our family impact our word choice?
Answer:
Family dynamics significantly impact health in both positive and negative ways. Having a close-knit and supportive family provides emotional support, economic well-being, and increases overall health. However, the opposite is also true.
Explanation:
#CarryonLearning
Answer:
They play a very big role in our word choice.
Explanation:
Why? everyday we speak to them that allows us to absorb what they say. We adopt their word choice and vise versa.
Why does it take 2 days longer for the Moon to go from New Moon to New Moon when viewed form the Earth than it takes for the the moon to make 1 complete rotation on its axis?
The time between two new Moon phases or two full Moon phases is 29.5 days. ... The difference of 29.5 and 27.3 is that while the Moon is orbiting the Earth, the Earth is moving along in its orbit so it takes longer for the Moon to reach the same position relative to the Sun.
UM CAN SOME GIVE ME THE ANSWER PLS IM LIKE DYING I RLLY NEED THE ANSWER ITS DUE IN 2 MIN
In addition to thermal conductivity, what other properties of materials would
need to be considered when designing and building houses? Give three
suggestions.
Answer:
Wood, metal, Stone
Explanation:
Answer:
Thermal resistance,Specific Heat Capacity,Density
Explanation:
Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.
5. Does a planet in orbit around the sun travel at a constant speed? How do
you know? *
(1 Point)
Answer:
No
Explanation:
A planet's orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun's gravitational pull, and the slower it moves in its orbit.
What are the different types of teeth's In humans
Answer:
Hey mate.....
Explanation:
This is ur answer....
A human has 4 types of teeth:-
--> 8 Incisors.
--> 4 Canines.
--> 8 Premolars.
--> 12 Molars (including 4 wisdom teeth)
Hope it helps!
Mark me brainliest....
FOLLOW ME! :)
Answer:
there are four types of teeth's in humans
these four are as follows :-
caninesincisorspremolarmolarshope it helps
What are some possible sources of motion that could be harnessed for a generator?
Explanation:
There are multiple other sources of kinetic energy that can be harnessed for electricity. Wind-powered turbines can create energy through windmills or wind-power generators. Wind energy is harnessed into kinetic energy by turning panels that are designed and angled to catch as much wind as possible.
Which region on the map has the highest risk of future landslides?
Answer:
Reigon 1
Explanation:
It has the higest rate of landslides currently
What is the angle of incidence of a wave if its angle of reflection is 20 degrees?
a) 10
b) 70
c) 20
Your answer is:
c) 20°
∝ Sidhdi
Conservation of momentum
Answer:
The combined velocity of Sally and the sled is 1.688 meters per second.
Explanation:
Let suppose that Sally collides inelasticly, meaning that final velocity of Sally-sled system can be determined solely by Principle of Momentum Conservation:
[tex]m_{S}\cdot v_{S, o} + m_{s}\cdot v_{s,o} = (m_{S}+m_{s})\cdot v[/tex] (1)
Where:
[tex]m_{S}[/tex] - Mass of Sally, measured in kilograms.
[tex]m_{s}[/tex] - Mass of the sled, measured in kilograms.
[tex]v_{S,o}[/tex] - Initial velocity of Sally, measured in meters per second.
[tex]v_{s,o}[/tex] - Initial velocity of the sled, measured in meters per second.
[tex]v[/tex] - Final velocity of the Sally-sled system, measured in meters per second.
If we know that [tex]m_{S} = 54\,kg[/tex], [tex]m_{s} = 10\,kg[/tex], [tex]v_{S,o} = 2\,\frac{m}{s}[/tex] and [tex]v_{s,o} = 0\,\frac{m}{s}[/tex], then the final velocity of the system is:
[tex]v = \frac{m_{S}\cdot v_{S,o}+m_{s}\cdot v_{s,o}}{m_{S}+m_{s}}[/tex]
[tex]v = 1.688\,\frac{m}{s}[/tex]
The combined velocity of Sally and the sled is 1.688 meters per second.
Q1: We drop this 0.1 kg apple 1 m. What speed does it hit the ground
with?
Looking for: Potential energy
Please explain it an easy way
Which statement best describes the work and energy in these examples?
Example 1: Running a car requires gas.
Example 2: Humans require food to live.
The gas and food are examples of energy.
The gas and food are examples of work.
The gas and humans are examples of work.
The food and car are examples of energy.
Answer:
the văd and food are exemple of energy
Answer:
the gas and food are example of energy
Explanation:
EDGE 2021
the energy of moving things are called
Answer:
Kinetic Energy
Explanation:
Energy that a moving object has due to its motion is Kinetic Energy.
please answer of of them.
Answer:
1. 7.5 km/h
2. 1 hour, 52 minutes, 30 seconds
3. 0.8 Joules
4. 13.33 mph
5. 19456 Joules
6. 10.5 kg
Explanation:
HELP
as shown in the diagram, points p,q, and r are located near a positively charged object.
Multiple-Concept Example 6 presents a model for solving this problem. As far as vertical oscillations are concerned, a certain automobile can be considered to be mounted on four identical springs, each having a spring constant of 1.21 x 105 N/m. Then, four identical passengers are seated in the car, and it is set into a vertical oscillation that has a period of 0.371 s. If the mass of the empty car is 1400 kg, determine the mass of each passenger. Assume that the mass of the car and its passengers is distributed evenly over the springs.
Answer:
[tex]71.865\ \text{kg}[/tex]
Explanation:
Mass of car = 1400 kg
T = Time period = 0.371 s
k = Spring constant = [tex]1.21\times 10^{5}\ \text{N/m}[/tex]
Time period is given by
[tex]\dfrac{1}{T}=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}\\\Rightarrow m=4\dfrac{kT^2}{4\pi^2}\\\Rightarrow m=\dfrac{4\times 1.21\times 10^5\times (0.371)^2}{4\pi^2}\\\Rightarrow m=1687.46\ \text{kg}[/tex]
The 4 in the numerator is because there are 4 springs
Mass of car with people is 1687.46 kg.
Mass of people
[tex]1687.46-1400=287.46\ \text{kg}[/tex]
Mass of each person
[tex]\dfrac{287.46}{4}=71.865\ \text{kg}[/tex]
Mass of each person is [tex]71.865\ \text{kg}[/tex].
How are rocks weathered as in this example seen here?A) The rocks change their composition. B) The rocks are being chemically weathered by the water. C) Freezing and thawing of water breaks the rocks into pieces. D) Hot lava is pushing on the rock and breaking it into pieces.
Answer:
Is there a picture-
Explanation:
The rock weathered as in this example seen here is freezing and the thawing of water breaks the rocks into pieces. The correct option is C).
What is rock weathering?By interacting with water, atmospheric gases, and living beings, weathering is the disintegration of rocks, soils, minerals, as well as wood and man-made objects. In contrast to erosion, which involves the movement of minerals and rocks caused by forces like water, waves, and gravity, weathering takes place in its natural environment.
The two different kinds of weathering processes are chemical aging and physical aging. The mechanical deterioration of rocks brought on by heat, rain, ice, or other elements is referred to as physical weathering.
Chemical weathering is the interaction of rocks and soils with water, atmospheric impacts, and biologically generated substances. Physical weathering is mostly caused by water, while oxygen molecules in the atmosphere and biological activity also play a part.
Therefore, the correct option is C) Freezing and thawing of water break the rocks into pieces.
To learn more about rock weathering, refer to the link:
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The question is incomplete. Your most probably complete question is given below: the image is added.
1. What is the kinetic theory?
2. What happens to a bimetallic strip when it is placed in heat?
3. Describe two applications of a bimetallic strip.
Answer:
1 =The kinetic theory of gases is a simple, historically significant model of the thermodynamic behavior of gases, with which many principal concepts of thermodynamics were established. The model describes a gas as a large number of identical submicroscopic particles, all of which are in constant, rapid, random motion.
2 =When this bimetallic strip is heated, the brass expands more than the steel and the strip curves with the brass on the outside. If the strip is cooled, it curves with the steel on the outside.
3 =Bimetal strips are also used in time-delay relays, gas oven safety valves, thermal flashers for older turn signal lamps, and fluorescent lamp starters.
If a 5 kg cart is pulled with a net force of 20 Newtons. What is the magnitude, in m/s2, of the acceleration?
Answer:
F=ma
a=F/m=20/5=4 m/s^2
I bet no one can solve this :)
Answer:
it's D
Explanation:
The current can run through R because it is practically a closed circuit by itself so the lamp would be lit but, with S and T the current can not flow and light the lamps because the switch is open.
PLEASE PLEASE PLEASE PLEASE PLEASE HELP!!!!!!!!
A car traveled 88 km in 1.0 hour, 91 km in the next 2.0 hours, and then 76 km in 1.0 hour before reaching its destination. What was the car’s average speed?
Answer:
64 km/h
Explanation:
what type of object is called the object at rest
Rest is the state of an object being stationary relative to a particular frame of reference or another object; when the position of a body with respect to its surroundings does not change with time it is said to be "at rest".
2. A ball is dropped from rest. The acceleration due to gravity is 10m/s? and the time it
takes for the ball to reach the ground is 5 seconds. What was the velocity of the ball just
before it hits the ground
Answer:
STEP BY STEP
V = S/T
V= 10/5
V = 2 m/s
Please help me lol :|
Answer:
1 is community 2 habitat 4 producer 5 consumer 6 food chain 7 predator 8 prey sorry I don't know 4
Please help?? PWEASE PWEASE PWEASE
Describe how you would draw a diagram that shows the electric field between two particles that attract each other.
Answer:
draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots
Explanation:
When electrons are lost, a ( )
ion is formed.
When electrons are
gained, a ( )
ion is formed.
When electrons are lost a positive ion is formed. When electrons are gained, a negative ion is formed. I hope this helps