Answers
Answer:
A and D are correct as they reduce GHG emissions while maintaining people's standard of living.
Answer:
Ig A and D
Explanation:
as :
a : Solar powered cars- redices emissions, relies on renewable sources and maintains current living.
d: a : WIND TURBINES - redices emissions, relies on renewable sources and is the closest to maintaining current living.
I hope im right !!!
Related Questions
3. Calculate the radii of the first five Fresnel zones if the distance from the light source to the wave surface is 1m, the distance from the wave surface to the observation point is also 1m and the light wavelength is 0.0000005m. (0.50mm; 0.71mm; 0.86mm; 1.0mm; 1.12mm).
Answers
The radii of the first five Fresnel zones is 3.6 mm.
Distance from the light source to the wave surface, d₁ = 1 m
Distance from the wave surface to the observation point, d₂ = 1 m.
Wavelength of the light used, λ = 5 x 10⁻⁶m = 5 μm
The expression for the radius of the Fresnel zones is given by,
rₙ = √[nλd₁d₂/(d₁ + d₂)]
Therefore, the radii of the first five Fresnel zones is,
r₅ = √[5 x 5 x 10⁻⁶x 1 x 1/(1 + 1)]
r₅ = √(25 x 10⁻⁶/2)
r₅ = 3.6 x 10⁻³m
r₅ = 3.6 mm
To learn more about Fresnel zones, click:
https://brainly.com/question/19672328
#SPJ1
Which of the following surfaces would have the lowest amount of friction?
A. Glass
B. Sand
C. Wood
D. Ice
Answers
Answer:
Glass
Explanation:
Jill doubled the force acting on an object, yet she kept the acceleration constant or unchanged.
How did she do this?
Answers
Answer:
Mass doubles
Explanation:
Since F = ma, and given that the acceleration stayed constant, the mass must have changed. (Assuming thatt when the problem states the force doubles, they mean the net force doubles). Note, that the mass does not have to change if the acceleration is zero.
cA proton and an electron are held a short distance apart and released from rest. The only nonnegligible forces on the particles are the electrostatic forces they exert on each other. Which of the following statements is true? The magnitude of the electrostatic force exerted on the proton by the electron is greater than that exerted on the electron by the proton. The magnitude of the acceleration of the proton is less than the magnitude of the acceleration of the electron The proton must move a larger distance to have the same magnitude change in potential energy as the electron. The proton must move the same distance to have the same change in speed as the electron.
Answers
The magnitude of the electrostatic force exerted on the proton by the electron is greater than that exerted on the electron by the proton.
What kind of force is electrostatic?
The Coulomb's inverse-square law, sometimes known as Coulomb's law, is an observational physical principle that measures the force exerted between two electrically charged particles that are stationary. Common names for the electric created between two charged objects at rest include electrostatic force and Coulomb force.
Electrostatic force, where is it?Between two charges that are separated by a distance, there is an electrostatic force. The size of each charges and the separation between them determine the strength of the electrostatic force. Two charges that are either positive or negative when placed together repel one another.
To know more about Electrostatic force visit
brainly.com/question/9774180
#SPJ4
5. You are driving at a constant speed of 35.0 m/s
when you pass a traffic officer on a motorcycle
hidden behind a billboard. One second after your
car passes the billboard, the traffic officer sets out
from the billboard to catch you, accelerating at a
constant rate of 3.0 m/s². How long does it take the
traffic officer to overtake your car?
Answers
The traffic cop needs 23.3 seconds to pass the automobile.
What is the acceleration of a car moving in a straight line at a constant speed?When your velocity (not speed) changes, you are accelerating. A automobile moving at a steady 100 km/h in a straight line has no acceleration. Average acceleration is equal to (change in velocity) / (duration). The car's acceleration is zero because its change in velocity is also zero.
\(d1 = v1*t1 = 35.0 m/s * 1 s = 35.0 m\)
\(d = d1 = 35.0 m\)
\(d2 = v2*t + (1/2)at^2\)
\(d2 = (1/2)at^2\)
\(v2*t + (1/2)at^2 = (1/2)at^2\)
\(v2*t = (1/2)at^2\)
Solving for t, we get:
\(t = (2v2/a) = (235.0 m/s)/3.0 m/s^2 = 23.3 s\) (rounded to 2 decimal places)
To know more about velocity visit:-
https://brainly.com/question/17127206
#SPJ1
If a wave has a frequency of 74 Hz and a speed of 444 m/s, what is the wave's wavelength?
Answers
Answer:
6 m
Explanation:
velocity = wavelength x frequency
444 m/s = wavelength x 74 Hz
444 m/s / 74 Hz = wavelength
wavelength = 6m
Given the functions f(x)=(1/x-3)+1 and g(x) = (1/1+4)+3
Which statement describes the transformation of the graph of function f onto the graph of function g?
O The graph shifts 2 units right and 7 units down.
O The graph shifts 7 units left and 2 units up.
O
e graph shifts 7 units right and 2 units down.
O The graph shifts 2 units left and 7 units up.
Answers
The statement that describes the transformation of the graph of function f onto the graph of function g is: The graph shifts 2 units right and 7 units down.
To determine the transformation of the graph of function f onto the graph of function g, we compare the two functions f(x) and g(x) and observe the changes in the equations.
The function f(x) = (1/x - 3) + 1 represents a reciprocal function that is shifted vertically 1 unit up and horizontally 3 units to the right. The reciprocal function is reflected about the line y = x.
The function g(x) = (1/(1 + 4)) + 3 simplifies to g(x) = 4 + 3 = 7, which is a constant function representing a horizontal line at y = 7.
By comparing the equations, we can see that the transformation from f(x) to g(x) involves the following changes:
The term 1/x in f(x) is replaced by the constant 1/(1 + 4) in g(x), resulting in a vertical shift of 7 units up.
The term -3 in f(x) is replaced by 3 in g(x), resulting in a vertical shift of 3 units up.
The +1 in f(x) is replaced by +3 in g(x), resulting in an additional vertical shift of 2 units up.
Therefore, the overall transformation is a shift of 2 units to the right and 7 units down.
Hence, the correct statement is: The graph shifts 2 units right and 7 units down.
For more such questions on graph, click on:
https://brainly.com/question/26865
#SPJ8
If the mass of the book is 50 sliding with acceleration 1.2 m/s ^ 2 then the friction force is
364N
185N
173N
73N
ANSWER AND I WILL GIVE YOU BRAINILIEST
Answers
Answer:
73N
Explanation:Just multiply 1.2^2 by 50
if the instantaneous current in the circuit is giveen by I=3 sin theta amperes, the rms value of the current will be
Answers
Answer:
\(I_{rms}=2.12\ A\)
Explanation:
Given that,
The instantaneous current in the circuit is giveen by :
\(I=3\sin\theta\ A\)
We need to find the rms value of the current.
The general equation of current is given by :
\(I=I_o\sin\theta\)
It means, \(I_o=3\ A\)
We know that,
\(I_{rms}=\dfrac{I_o}{\sqrt2}\\\\=\dfrac{3}{\sqrt2}\\\\=2.12\ A\)
So, the rms value of current is 2.12 A.
A mass M slides downward along a rough plane surface inclined at angle \Theta\:Θ= 32.51 in degrees relative to the horizontal. Initially the mass has a speed V_0\:V 0 = 6.03 m/s, before it slides a distance L = 1.0 m down the incline. During this sliding, the magnitude of the power associated with the work done by friction is equal to the magnitude of the power associated with the work done by the gravitational force. What is the coefficient of kinetic friction between the mass and the incline?
Answers
Answer: μ = 0.8885
Explanation: Force due to friction is calculated as: \(F_{f} = \mu.N\)
At an inclined plane, normal force (N) is: N = mgcosθ, in which θ=32.51.
Power associated with work done by friction is \(P=F_{f}.x\). The variable x is displacement the object "spent its energy".
Power associated with work done by gravitational force is P = mghcosθ, where h is height.
The decline forms with horizontal plane a triangle as draw in the picture.
To determine force due to friction:
\(F_{f}.x=mghcos(\theta)\)
\(F_{f}=\frac{mghcos(\theta)}{x}\)
Replacing force:
\(\frac{m.g.h.cos(\theta)}{x} = \mu.m.g.cos(\theta)\)
\(\mu=\frac{h}{x}\)
Calculating h using trigonometric relations:
\(sin(32.51) = \frac{h}{1}\)
h = sin(32.51)
Coefficient of Kinetic friction is
\(\mu=\frac{sin(32.51)}{1}\)
μ = 0.8885
For these conditions, coefficient of kinetic friction is μ = 0.8885.
How do the linear equation and quadratic equation are differ? What do we suffer on earth? What if we would live on the moon /sun?
Answers
A quadratic equation is a parabola and a linear equation is a straight line.
Quadratic Equation is an equation in which the power of variable mostly x is two. Standard quadratic equation is \(ax^{2} +bx+c=0\)Any linear equation have form like \(y=mx+c\)The moon has no atmosphere, no weather and no oceans of water. Its surface is in a perpetual vacuum.Because the moon's gravity is only one-sixth that of the Earth's gravity, Apollo astronauts had to risk of stumbling or falling.Astronauts on the moon were protected from the extreme temperatures by their spacesuits. The suits had several layers of insulating material covered by a highly reflective outer layer.Learn more:
https://brainly.com/question/9201543
Where is the near point of an eye for which a spectacle lens of power +2 D is prescribed for reading purpose?
Answers
The near point of a human eye is about a distance of 25 cm.
The closest distance that an object may be viewed clearly without straining is known as the near point of the eye.
This distance (the shortest at which a distinct image may be seen) is 25 cm for a typical human eye.
The closest point within the accommodation range of the eye at which an object may be positioned while still forming a focused picture on the retina is also referred to as the near point.
In order to focus on an item at the average near point distance, a person with hyperopia must have a near point that is further away than the typical near point for someone of their age.
To learn more about near point, click:
https://brainly.com/question/32579304
#SPJ1
given the two displacement vector D ( 6i+3j-k) and vector E( 4i-5j+3k) what is the magnitude of displacement. 2D-E
Answers
Answer:
The magnitude of displacement vector 2D-E is approximately 14.49 units. The calculation is done using the Pythagorean theorem after finding 2D-E by multiplying vector D by 2 and subtracting vector E.
Explanation:
The value of 2D-E must first be calculated in order to ascertain the displacement 2D-E's magnitude. Vector D may be multiplied by two to accomplish this, and the result can be obtained by deducting vector E:
2D-E = 2(6i + 3j - k) 4i + 5j + 3k = 8i + 11j - 5k - (4i - 5j + 3k) = 12i + 6j - 2k
We can use the Pythagorean theorem to determine the magnitude of the displacement vector now that we know it:
|2D-E| = √(8² + 11² + (-5)²) = √(64 + 121 + 25) = √210 ≈ 14.49
The displacement 2D-E magnitude is therefore 14.49 units or such. From the object's beginning location to its ultimate position, the displacement's entire length is shown by this. Being a scalar variable, the displacement's magnitude does not reveal the displacement's direction.
To know more About displacement's direction
https://brainly.com/question/218648
What is an isotope?
A) Atoms of the SAME element that have different numbers of NEUTRONS.
B) Atoms of DIFFERENT elements that have different numbers of NEUTRONS.
C) Atoms of the same elements that have DIFFERENT numbers of PROTONS.
D) Atoms of the DIFFERENT element that have DIFFERENT numbers of PROTONS.
Please help me!!
:)
10 Points!
Answers
Answer:
A
Explanation:
they are atoms of the same element that have the same number of protons but different number of neutrons.
Which law of thermodynamics does each of the following scenarios violate (if any)?
A machine that can turn 1000J of heat directly into 1000J of electricity
1.
The first law of thermodynamics
2.
The second law of thermodynamics
3.
The third law of thermodynamics
4.
It is allowed
Answers
Answer: The scenario violates the second law of thermodynamics.
Explanation: The second law states that heat cannot be converted into work without some loss of usable energy, and that the amount of usable energy in a closed system will always decrease over time. Therefore, the machine described in the scenario cannot exist because it would violate the second law by converting all of the heat into electricity without any loss of usable energy.
PLEASE HELP AND SHOW WORK,THANK YOU!!
4) Suppose that two identical
mass planets are sitting
million miles apart. At that
distance the planets have a
gravitational force of 1,000,000 N.
If the planets are moved
to two million miles apart, what
is the new gravitational force
between them?
Answers
The new gravitational force between the two planets, when they are moved to two million miles apart, is 250,000 N
The gravitational force between two objects can be calculated using Newton's Law of Universal Gravitation, which states that the force is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Given:
Initial distance between the planets = 1 million miles
Initial gravitational force = 1,000,000 N
Final distance between the planets = 2 million miles
To determine the new gravitational force, we need to compare the ratios of the distances and apply the inverse square law.
Let's denote the initial distance as d1, the initial gravitational force as F1, the final distance as d2, and the unknown final gravitational force as F2.
According to the inverse square law, the ratio of the gravitational forces is the square of the ratio of the distances:
(F2/F1) = (d1/d2)²
Substituting the given values:
(F2/1,000,000 N) = (1 million miles / 2 million miles)²
Simplifying:
(F2/1,000,000 N) = (1/2)²
(F2/1,000,000 N) = 1/4
F2 = (1/4) * 1,000,000 N
F2 = 250,000 N
for more questions on force
.https://brainly.com/question/12970081
#SPJ11
Fan B has an efficiency of 55% and usefully transfers 10J of energy to its kinetic energy store each second. Calculate how much energy is supplied to fan B per second
Answers
Fan B has an efficiency of 55% and usefully transfers 10J of energy to its kinetic energy store each second. 18.18 J of energy is supplied to fan B per second.
What definition of effectiveness is the best?Efficiency is the capacity to do a task with little or no wastage, effort, or energy. Being effective is maximizing the use of the resources at your disposal to achieve your objectives. Simply put, something is efficient if there is no waste and every process is optimized.
To calculate the input energy use the following formula
Efficiency = Energy(out) / Energy(in) * 100%
Efficiency = 55%
Energy(out) = 10J
Energy(in) = ?
On putting the given values we get,
55 = Energy(in) / 10 * 100%
On solving we get,
Energy(in) = 18.18J
To know more about Efficiency visit:
https://brainly.com/question/13828557
#SPJ9
Which is a chemical property of iron? A. It forms iron oxide (rust) when exposed to moisture and air. B. It is a gray–black metal that is hard to the touch. C. It has a melting point of 2795°F (1536°C). D. It is a good conductor of heat.
Answers
Answer:
a
Explanation:
it corrodes after repeated exposure to excess moisture and dry air the rust itself can be turned back into iron after melting it and removing the waste
2. If a car is accelerating under a net force of 3674 N, what force must the
brakes exert to cause the car to have constant velocity?*
Answers
Answer:
I don't do physics but I think the answer would be -3674
Explanation:
Newton's 2 law of motion
how cold does it have to be for a snowflake to form around a dust particle?
Answers
Answer:
32 degrees Fahrenheit
Snow forms when the atmospheric temperature is at or below freezing and there is a minimum amount of moisture in the air. If the ground temperature is at or below freezing, the snow will reach the ground.
Explanation:
Suppose that you are on a roller coaster ride and are safely moving through a somewhat circular loop. You are at the top of the loop and riding along the inside of the loop (as pictured). One can conclude that the normal force acting upon your body is a. non-existent b. of greater magnitude than the force of gravity c. of lesser magnitude than the force of gravity d. of equal magnitude to the force of gravity e. impossible to tell the relative magnitude since the acceleration value is not explicitly stated f. directed upward g. directed downward Select all that apply; no commas; no spaces.
Answers
The correct answers are c. of lesser magnitude than the force of gravity and f. directed upward.
At the top of the loop, you are in a state of free fall, and your body is being pulled towards the center of the loop due to the force of gravity. However, the normal force acting upon your body is what prevents you from falling out of the roller coaster and keeps you safely inside the loop. This normal force is directed upward and is of lesser magnitude than the force of gravity, as it is just strong enough to counteract the gravitational pull and keep you in the circular path.
If the normal force were of equal magnitude to the force of gravity, you would experience no net force and would be in a state of weightlessness, and if the normal force were of greater magnitude, you would be pushed against the seat with a greater force than the force of gravity.
To learn more about gravity here:
https://brainly.com/question/14874038
#SPJ4
suggest a reason why the earth can be compared to a bar magnet
Answers
A tennis player hit a .057-kg ball with a force of 40 N. The duration of the force was .05 s.
Answers
which of the following terms refer to the area immediately around the crime?
A crime scene
B bird's-eye view
C extent
D core area
Answers
Answer:
A....It is a crime sene
Explanation:
Please help me
Explain why driver age 16-18 are most likely to be involved in traffic accidents
Answers
Answer:Lack of experience.
Explanation:
Research from the CDC points to a few key reasons teen drivers are likely to be involved in car accidents: Lack of experience. Teen drivers have triple the fatal crash risk of older drivers, in part because they do not have the skills to recognize and avoid road hazards.
Acceleration and Velocity
Answers
Answer:
acceleration an velocity are two different types of hate for each individual to choose from my favorite ones and not just one for me like you said you would have to pay for the person you want and you will need to pay for your business.
Explanation:
no exceptions
What are the first three elements of a press release?
Answers
Answer: headline, dateline, introduction
Explanation: its correct im not explaining
A 913 kg car travels around a curve with a radius of 268 meters at a constant speed of 11 m/s. Calculate the cars acceleration
Answers
Answer:2.22
Explanation:
Which statement about kinetic and static friction is accurate?
Static friction is greater than kinetic friction, and they both act in conjunction with the applied force.
Kinetic friction is greater than static friction, and they both act in conjunction with the applied force.
Kinetic friction is greater than static friction, but they both act opposite the applied force.
Static friction is greater than kinetic friction, but they both act opposite the applied forcr
Answers
Answer:
Static friction is greater than kinetic friction, but they both act opposite the applied force.
Explanation:
Newton's 3rd law states that every action has and equal but opposite reaction.
If an object has static friction, that means it stays in one spot, and it takes a great amount of force to get it moving.
Once the object is moving it has kinetic friction, but it's easier to keep it moving unless you are trying to stop it.
The equal but opposite reaction to something moving it is stopping it, and the equal but opposite reaction to stopping something is moving it.
The same amount of force used to move/stop something is used to stop/move it.
Static friction is greater than kinetic friction, but they both act opposite the applied force.
Friction is the force that opposes motion. Frictional force always acts in opposition to the direction of motion.
There are two kinds of friction;
Static frictionDynamic frictionSince more forces tend to act on a body at rest and prevent it from getting into motion than the forces that tend to stop an already moving body, it follows that static friction is greater than kinetic friction. Both act in opposite direction to the applied force.
Learn more: https://brainly.com/question/18754989
How do scientists know the continents were once closer than they are today? Explain your answer in 2-3 complete sentences.
Answers
Answer:
Continental drift describes one of the earliest ways geologists thought continents moved over time. Today, the theory of continental drift has been replaced by the science of plate tectonics.
The theory of continental drift is most associated with the scientist Alfred Wegener. In the early 20th century, Wegener published a paper explaining his theory that the continental landmasses were “drifting” across the Earth, sometimes plowing through oceans and into each other. He called this movement continental drift.