Removing natural vegetation due to urbanization has significant effects on the land. One of the primary impacts is that it leads to soil erosion and decreases soil fertility.
Vegetation helps to anchor soil in place and increases the soil's ability to retain moisture and nutrients, which is essential for plant growth. Without vegetation, rainwater runs off the surface of the land, carrying soil and pollutants into water bodies, causing erosion, and making it difficult for plants to grow.
Additionally, vegetation plays an important role in regulating the local climate, which can be disrupted by the urban heat island effect. This results in higher temperatures and lower air quality, leading to increased energy consumption and greenhouse gas emissions.
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A car travels for 3 hours to a distant city 200 km due East. What was its (1) speed, (2) velocity?
Answer:
v=66.6km/hr
V=66.6km/hr due east
Explanation:
\(v= \frac{s}{t} \)
given
s=200km
t=3hr
required
v=?
solution
v=s/t
v=200km/3hr
v=66.6km/hr
Strong force occurs because neutrons work to keep protons in place inside the nucleus of an atom so the protons do not push each other out of the atom.
A true
B false
It is a true statement that a strong force occurs because neutrons work to keep protons in place inside the nucleus of an atom so the protons do not push each other out of the atom.
The nucleus contains nucleons. These nucleons are protons and neutrons. The neutrons have no charge while the protons are positively charged.
As the number of protons in the nucleus increase, repulsion between like charged particles continues to increase.
This is mitigated by the strong attractive force provided by neutrons. This force counteracts the repulsion between protons thereby keeping the nucleons of an atom together.
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How do adaptations help an animal survive?
Answer: Depends on their adaptions such as they may be able to change their color of their skin to camouflage to hide from predators or they are able to survive in harsh weather where they live in.
Explanation:
Answer: An adaptation is a very particular skill which helps an animal do the things they do in every day life . Adaptation basically helps an animal survive in the environment they have decided to live in .
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A go cart engine applies a force of 888N and moves the cart forward 22m.
a) How much work is done?
b) We put on a bigger engine (1111N) but the cart still moves forward 22m. How much work is done now?
c) Why would you put on a bigger engine if you are still moving 22m?
Answer:
Explanation:
a) work=Force times distance. given force is 888N and distance travelled is 22M
work= 888 x 22 = 19536J or 1.954x10^5J
b) work = 1111 x 22= 24442J or 2.444x10^5J
c) putting on a larger engine means that there are gonna be more force applied to the go cart. therefore the cart will travel the same distance faster
a. The amount of work done by the go cart engine is 19,536 Nm.
b. The amount of work done when a bigger engine is used is 24,442 Nm.
c. The reason why a bigger engine is used is, so that the engine can easily do more work in the same amount of distance.
Given the following data:
Force A = 888 NewtonDistance = 22 meterForce B = 1111 Newtona. To determine the amount of work done by the go cart engine:
Mathematically, the work done by an object is given by the formula;
\(Work\;done = Force \times distance\)
Substituting the given parameters into the formula, we have;
\(Work\;done = 888 \times 22\)
Work done = 19,536 Nm.
b. To determine the amount of work done when a bigger engine is used:
\(Work\;done = Force \times distance\)
\(Work\;done = 1111 \times 22\)
Work done = 24,442 Nm.
c. The reason why a bigger engine is used is, so that the engine can easily do more work in the same amount of distance.
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1) how can you show that atmospheric exerts pressure?
2) how do you measure the volume of an irregular solid ? explain an experiment with diagram.
Answer:
1. While boiling replace the cap and allow it to cool. Vapours inside condense and form water creating vacuum above them. Observation - The can crumbles due to air pressure from outside. This proves that air exerts pressure.
2. Measure the volume of the liquid displaced when the object is submerged. Measure the initial volume of water in graduated cylinder. Submerge the irregular object. Measure the final volume of the water.
— The difference between the initial volume and the final volume is the volume of the object.
hope can help ^_^
Let's try to do this math ourselves from this point. Notice how the s2 term in the acceleration (5 m/s2) and the s term in the time (7 s) cancel leaving you with m/s (velocity).
122 m/s
244 m/s
8.7 m/s
35 m/s
As per the given statement the s2 term in the acceleration (5 m/s2) and the s term in the time (7 s) cancel leaving you with 35 m/s (velocity).
What is velocity?Velocity is the rate of change of speed per unit time. It also determines the direction of the movement of object or moving body. hence, it is called as directional speed.
In its basic form, speed is a scalar quantity. In essence, velocity is a vector quantity. It is the speed at which distance changes. It is the displacement change rate.v=Δx/Δt where v= average velocity, Δx=displacement, Δt=change in time.To know more about velocity visit
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Write a scientific explanation that’s gives mathematical evidence to support your claim and provides reasoning based on Newton’s Law of universal gravitation.
Certainly! In order to provide a scientific explanation supported by mathematical evidence and Newton's Law of Universal Gravitation, let's consider the following scenario:
Suppose we have two objects, object A and object B, with masses \(m_A\)and \(m_B\), respectively. The distance between the centers of the two objects is denoted as r. According to Newton's Law of Universal Gravitation, the gravitational force (F) between the two objects is given by the equation:
F = G * (\(m_A\) * \(m_B\)) / \(r^2\)
In this equation, G represents the gravitational constant, which is approximately \(6.674 \times 10^{-11} \, \text{N m}^2/\text{kg}^2\).
Now, let's examine the mathematical evidence and reasoning to support the claim. The law states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This means that as the distance (r) between the objects increases, the gravitational force (F) decreases.
To provide mathematical evidence, let's consider two scenarios:
Scenario 1: If we double the distance between the two objects while keeping their masses constant, the gravitational force between them decreases by a factor of 4. Mathematically, this can be shown as:
F' = G * (\(m_A\) * \(m_B\)) / \((2r)^2\)
= G * (\(m_A\) * \(m_B\)) / \((4r^2)\)
= F / 4
This demonstrates that the force is inversely proportional to the square of the distance.
Scenario 2: If we keep the distance between the two objects constant but double the mass of one of the objects, the gravitational force between them doubles as well. Mathematically, we can express this as:
F' = G * (2\(m_A\) * \(m_B\)) / \(r^2\)
= 2 * (G * (\(m_A\) * \(m_B\)) / \(r^2\))
= 2F
This shows that the force is directly proportional to the product of the masses.
By utilizing mathematical evidence and reasoning based on Newton's Law of Universal Gravitation, we can conclude that the law provides a strong scientific explanation for the gravitational interactions between objects. The mathematical relationship between mass, distance, and gravitational force supports the claim that the force of attraction between two objects decreases as their distance of separation increases, which aligns with our understanding of gravity.
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um I don't remember how to do this, help :(
Pressure is a measure of force per unit area:
P = F/A
The water exerts a pressure of 202 kPa = 202,000 Pa on the diver, who has a surface area of 1.50 m². Then the force exerted by the water is F such that
F = PA
F = (202,000 Pa) (1.50 m²)
F = 303,000 N = 303 kN
Kate is riding on a train and notices that the wildflowers by the side of the tracks seem to be moving by much faster than the mountains in the distance. This is an example of
Answer: motion parallax
Explanation:
Motion parallax refers to a form of depth perception whereby objects that are closer to an individual appears to move at a faster speed than the objects that are far.
Therefore, Kate is riding on a train and notices that the wildflowers by the side of the tracks seem to be moving by much faster than the mountains in the distance is an example of motion parallax.
Keesha conducts an experiment by pouring equal amounts of boiling water into four containers. The containers are the same size and shape, but they are made of different materials. The chart lists the containers according to their materials. A 2-column table with 4 rows. The first column labeled Container has entries W, X, Y, Z. The second column labeled Material has entries foam, glass, plastic, stainless steel. Using protective gloves, Keesha carefully touches each container immediately after pouring the water. Which container was likely the hottest? W X Y Z.
Option Z is correct. The stainless steel container was likely the hottest. Stainless steel is an excellent heat conductor because it quickly warms the substance.
What are the qualities of stainless steel?Stainless steel is an excellent heat conductor because it quickly warms the substance or allows heat to travel through it. Stainless steel is also corrosion-resistant.
Foam, glass, and plastic, on the other hand, are all poor heat and electrical conductors. As a result, they do not allow heat to travel through.
As a result, we may deduce that, among the available possibilities, the stainless steel container was most likely the hottest.
Hence Option Z is correct. The stainless steel container was likely the hottest.
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Compare the water pressure directly below the hull of the yacht (point A) to the pressure at the same depth, but to the side of the ship (point B).
PA > PB
PA = PB
PA < PB
The water pressure directly below the hull of the yacht (point A) can be compared to the pressure at the same depth but to the side of the ship (point B).
In this scenario, PA = PB. This is because water pressure at a certain depth is determined by the weight of the water column above that point and is not affected by the presence of the yacht. At the same depth, both point A and point B experience the same amount of water pressure as they are subjected to the same weight of the water column above them. The pressure can be calculated using the formula P = ρgh, where P is the pressure, ρ is the water density, g is the gravitational acceleration, and h is the depth below the surface. Since both points are at the same depth and the density and gravitational acceleration are constant, the pressure at both points will be equal. Therefore, PA = PB.
Over water, oxygen gas is gathered. The combined pressure, which includes the oxygen and water vapour pressures, is 748 torr. Water at this temperature has a water vapour pressure of 23 torr. the oxygen gas partial pressure in torr. The mixture's overall pressure (the pressure of oxygen plus the pressure of water vapour) is 748 torr.
when the water vapour pressure is 23 torr and the temperature.The following formulas can be used to compute the partial pressure of oxygen gas. Total pressure minus water's vapour pressure equals partial pressure of oxygen.
748 torr less 23 torr equals 725 torr
As a result, 725 torr is the partial pressure of oxygen gas in torr.
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The water pressure directly below the hull of the yacht (point A) will be greater than the pressure at the same depth but to the side of the ship (point B), PA > PB.
Water pressure is the force exerted by water on any object that is submerged in it. It is determined by the depth of the water and the density of the fluid. When it comes to comparing the water pressure directly below the hull of the yacht (point A) to the pressure at the same depth but to the side of the ship (point B), it can be said that PA > PB.
This is because the hull of the yacht creates a barrier that forces the water molecules to be tightly packed together, leading to higher water pressure. On the other hand, at point B, the water molecules have more space to move around, so they are not as densely packed, leading to lower water pressure. Moreover, the depth at which both points A and B are located is also an important factor to consider. The deeper the water, the greater the water pressure. Therefore, if both points A and B are at the same depth, the difference in water pressure between them will still exist because of the barrier created by the yacht's hull. This difference in water pressure is a result of the barrier created by the yacht's hull, which causes the water molecules to be tightly packed together, leading to higher water pressure.
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A hummingbird is flying around and its velocity v as a function of time t is given in the graph below where
rightwards is the positive velocity direction.
v (m/s)
4
3
2
1
→t (8)
1.5 2 2.5 3 3.5
0.51
-1
-2
What is the hummingbird's displacement Ax from t = 3.0 s to 3.5 s?
Answer:
2 m
Explanation:
The following data were obtained from the question:
Time 1 = 3 s
Time 2 = 3.5 s
Velocity = 4 m/s (constant)
Displacement =?
Next, we shall determine the change in time. This can be obtained as follow:
Time 1 = 3 s
Time 2 = 3.5 s
Change in time = 3.5 – 3
Change in time = 0.5 s
Finally, we shall determine the displacement of the bird between 3 s and 3.5 s as follow:
Velocity = 4 m/s
Time = 0.5 s
Displacement =?
Velocity = Displacement /Time
4 = Displacement /0.5
Cross multiply
Displacement = 4 × 0.5
Displacement = 2 m
Therefore, the displacement of the birth between 3 and 3.5 s is 2 m.
A wire of resistance 27 ohm is folded 3 times find its new resistance
Answer:
New resistance = 243 ohm
Explanation:
Given:
Current resistance = 27 ohm
Computation:
The wire is extended to three times its initial size, and its cross-section is therefore shortened to one-third of how it used to be. We found the current resistance to be 3x3= 9 times
So,
New resistance = 27 x 9
New resistance = 243 ohm
concave mirror ______the rays of light
Answer: A concave mirror focuses rays of light
Explanation:
If a special type of ice has a specific heat capacity of 2060 J/kg K. How
much heat must be absorbed by 2.6 kg of ice at -27.00 C to raise it up to
0.00 C, before any melting takes place?
A. 140,000 J
B. 290,000 J
C. 56,000 J
D. None of the above
Answer:
Q = 144612 Joules.
Explanation:
Given the following data;
Mass = 2.6 kg
Initial temperature = -27°C to Kelvin = 273 + (-27) = 246K
Final temperature = 0°C to Kelvin = 273K
Specific heat capacity = 2060 J/kgK.
To find the quantity of heat absorbed;
Heat capacity is given by the formula;
\( Q = mcdt\)
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
dt = T2 - T1
dt = 273 - 246
dt = 27 K
Substituting the values into the equation, we have;
\( Q = 2.6*2060*27\)
Q = 144612 Joules.
in physics the word medium means
A. A type of paint
B. A size.
C. A material or substance.
D. A psychic.
Answer:
the answer is C a material or substance
Explanation:
BRAINLIEST PLZZZZZZZZZZZZZZZ
Describe one piece of evidence to show light waves do not need a medium travel from one place to another
Answer:
I don't know I'm sorry I will tell you another answer asks me
compound light microscopes have an electric light source. you can regulate the amount of light that passes through the stage by turning or manipulating the .
A compound light microscope is a type of microscope that enlarges an item so that its details may be studied.
What is light?The electromagnetic radiation that is visible to the human eye. At a constant speed of 299,792,458 meters per second, light moves through space with both wave-like and particle-like characteristics (in a vacuum).
A compound light microscope's major parts are an objective lens, mounted below the stage, which enlarges the image, and an eyepiece lens, mounted above the stage, which enlarges the image even more for the viewer.
A compound light microscope features an electric light source, which produces a constant and controllable amount of light, in contrast to conventional microscopes, which rely on natural light sources.
The amount of light that filters through the stage and the specimen can be adjusted by twisting a knob or moving a lever on this electric light source. This function is crucial since uneven lighting might make it difficult to see the specimen and generate glare and washed-out images.
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does increasing the frquency of a wave also increse its wavelength?if not,how are these quantities related
Answer:
No.
Explanation:
No, increasing the frequency of a wave will not increase it's wavelength. Rather it will decrease the wavelength because frequency and wavelength are inversely related.
According to Formula:
v = f(lemda)
If the speed is kept constant to find the relationship between f and wavelength.
=> f is inversely propotional to wavelength.
Hope this helps!
Have a great day!
two wires carry current i1 = 51 a and i2 = 25 a in the opposite directions parallel to the x-axis at y1 = 9 cm and y2 = 13 cm. where on the y-axis (in cm) is the magnetic field zero?
The magnetic field is zero at a point y = 10 cm in the y-axis.
Current through the first wire, i₁ = 51 A
Current through the second wire, i₂ = 25 A
Distance, y₁ = 9 cm
Distance, y₂ = 13 cm
The expression for the magnetic field due to a long current carrying conductor is given by,
B = μ₀i/2πR
The magnetic field due to the first wire,
B₁ = μ₀i₁/2π(y - y₁)
B₁ = 4π x 10⁷ x 51/2π(y - 9)
B₁ = 102 x 10⁷/(y - 9)
The magnetic field due to the second wire,
B₂ = μ₀i₂/2π(y₂ - y)
B₂ = 4π x 10⁷x 25/2π(13 - y)
B₂ = 50 x 10⁷/(13 - y)
So, at the point where the net magnetic field is zero,
B₁ = B₂
102 x 10⁷/(y - 9) = 50 x 10⁷/(13 - y)
51(y - 9) = 25(13 - y)
51y - 459 = 325 - 25y
76y = 784
Therefore,
y = 784/76
y = 10.3 cm
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according to lazarus cognitive appraisal approach the first step in appraising a stressor is called
According to Lazarus' cognitive appraisal approach, the first step in appraising a stressor is called "primary appraisal."
In this step, an individual evaluates the significance of a stressor and determines whether it is a threat, challenge, or irrelevant to their well-being.
Primary appraisal involves evaluating the significance and meaning of an event or situation in relation to one's well-being. It involves assessing whether the event is irrelevant, benign or positive (no stress), or if it is potentially stressful (stressful). If the event is appraised as stressful, it leads to further cognitive appraisals, such as assessing the harm or threat posed by the stressor and evaluating one's coping resources and options (secondary appraisal).
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a map of the entire sky, as seen from earth, is called
A map of the entire sky, as seen from Earth, is called a celestial map or a star map.
Celestial maps are graphical representations of the celestial sphere, which is an imaginary sphere surrounding Earth and representing the apparent positions of stars, constellations, and other celestial objects.Celestial maps provide a comprehensive view of the night sky and are used by astronomers, stargazers, and navigators to locate and identify celestial objects. They often depict the positions of stars, constellations, planets, galaxies, and other deep-sky objects. Celestial maps can be presented in various formats, including printed atlases, digital applications, and planetarium projections.
These maps are valuable tools for studying and understanding the night sky, enabling observers to navigate and explore the vastness of space from the comfort of Earth. They help to identify stars and constellations, locate specific objects of interest, and track the motion of celestial bodies over time.
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Please help I’ll give brainliest
**100 POINTS**
Suppose you have a balenced stick with 3 weights on one side and only 1 weight on the other side.What needs to happen on the side with less weight for the objects to be balanced?
A.Nothing.The objects cannot be balanced
B.Move the 1 weight closer to the center
C.Set the 1 weight 3 times the distance from the center as the weights on the other side
D.Set the 1 weight 6 times the distance from the center as the weights on the other side
Answer:
B
Explanation:
What will happen to the ball in example C if there is no friction?
A) The ball will roll forever in a straight path
B) The ball will roll forever in a curved path
C) The ball will stop rolling eventually
D) The ball's final position will be 10m away from the starting point
Answer:
A) The ball will roll forever in a straight path.
The feeling of being pushed into your seat when a car suddenly accelerates is an example of intertia
O True
O False
Answer:
it is true
Explanation:
because the backward force you feel when your car accelerates is caused by your body's inertia
A 15-kg cart filled with apples is sitting at the top of a bill that is 21 m high. The apples in the
your cart have a mass of 33 kg. What is the potential energy of the cart and the apples? Round your answer to the nearest tenth
Hi there!
Recall the equation for gravitational potential energy:
\(U = mgh\)
U = GPE (J)
m = mass (48 kg)
g = acceleration due to gravity (9.8 m/s²)
h = height (21 m)
Plug in the givens and solve.
\(U = (15 + 33)(9.8)(21) = \boxed{9878.4 J}\)
A 30-kg girl and a 50-kg boy face each other on friction less roller skates. The girl pushes the boy, who moves away at a speed of 3 m/s. What is the girls speed?
The Speed of the girl of mass 30 kg is 1.8 m/s.
What is speed?Speed is the ratio of distance and time.
To calculate the speed of the girl, we use the formula below
Formula:
mv = MV.................. Equation 1Where:
m = Mass of the grilM = Mass of the boyv = Speed of the girl V = Speed of the boyFrom the question,
Given:
m = 30 kgM = 50 kgv = 3 m/sSubstitute these values into equation 1 and solve for V
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A runner is training and runs past meter mark 65 and starts a stopwatch. After the runner passes meter mark 15 the stopwatch stops at 8 seconds. What was the runners velocity?
Question 5 options:
-6.25 m/s
6.25 m/s
8.13 m/s
-1.88 m/s
Answer:
-6.25 m/s
Explanation:
i took the quiz
how does an electric iron work when the power is on
Answer:
The basic principle on which the electric iron works is that when a current is passed through a piece of wire, the wire heats up. This heat is distributed to the sole (base) plate of the electric iron through conduction.