Answers
Answer:
It's D
Explanation:
because the kinetic energy of the turbines produces electric energy
EXPLANATION:
Hydro electric power plants are the electricity generation plants which capture the energy of falling water to produce current.
The water present at the top of a dam has potential energy. When the water is allowed to fall from certain height, the potential energy of the water is converted into kinetic energy.
The falling water moving with high speed is allowed to fall on a turbine. The kinetic energy of the water will rotate the turbine. The turbine is attached to a generator which will produce electricity due to the electromagnetic induction.
Hence, we see that the kinetic energy of the water is converted into electric energy.
Related Questions
Which force causes all objects with mass to attract one another?
A. Compression
B. Electrical force
C. Magnetic force
D. Gravity
Answers
7. MANSON'S FAVORITE SINGING GROUP WAS...
O THE TEMPTATIONS
O THE BEACH BOYS
O THE ROLLING STONES
O THE BEATLES
Answers
i just need x isolated
Answers
Answer:
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Explanation:
[tex]rx+y=\frac{t}{x}\\\\x(rx+y)=(\frac{t}{x})x\\\\rx^2+yx=t\\\\rx^2+yx-t=t-t\\\\rx^2+yx-t=0[/tex]
Solve using the quadratic formula.
[tex]x=\frac{-y+\sqrt{y^2+4rt} }{2r}[/tex]
[tex]x=\frac{-y-\sqrt{y^2+4rt} }{2r}[/tex]
Answer:
x=-y+[tex]\sqrt{[/tex]y^2+4rt/2r
Explanation:
solve using the quadratic equation
derivation of s= u+ 1/2 at2
Answers
We know that
Velocity is given by the rate of change of position w.r.t time
[tex]\\ \sf\longmapsto v=\dfrac{dx}{dt}[/tex]
[tex]\\ \sf\longmapsto vdt=dx[/tex]
Now we can see in above v is not independent of t .So we replace the value of v by v=u+at and we get[tex]\\ \sf\longmapsto (u+at)dt=dx[/tex]
Integrate with limits 0 to t and x_o to x respectively .[tex]\\ \sf\longmapsto u{\displaystyle{\int}_0^t}dt+a{\displaystyle{\int}_0^t}dt={\displaystyle{\int}^x_{x_0}}dx[/tex]
[tex]\\ \sf\longmapsto ut+\dfrac{1}{2}at^2=(x-x_0)[/tex]
[tex]\\ \sf\longmapsto x=x_0+ut+\dfrac{1}{2}at^2[/tex]
Example #4: Mrs. Smith is going on vacation to Greece for
her anniversary and the weather is predicted to be 27 °C.
Mrs. Smith lives in the U.S. Though and doesn't know what
to pack for this weather. Help her determine the
temperature in F so she can pack.
Answers
Answer:
The temperature is [tex]$80.6$[/tex] degrees Fahrenheit.
Explanation:
The weather is predicted to be 27 °C.
[tex]c=\frac{5}{9}(F-32)[/tex]
[tex]27=\frac{5}{9}(F-32)[/tex]
[tex]$5(F-32)=243$[/tex]
[tex]$F-32=\frac{243}{5}$[/tex]
[tex]$F-32+32=\frac{243}{5}+32$[/tex]
[tex]$F=\frac{403}{5}$[/tex]
[tex]F=80.6[/tex]
The temperature is [tex]$80.6$[/tex] degrees Fahrenheit.
Learn more about Fahrenheit, refer :
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a constant force acting on a body of mass 4kg changes its velocity from 2m/s to 4m/s in 4s. what is the force?
Answers
Answer:
2 Newton
Explanation:
from newton second law
F = ma
as we have the mass equals 4 kg
we need to get the acceleration which will be change in velocity over change in time
a = ∆V/∆t = (4-2)/4 = 0.5
so F = 4 * 0.5 = 2
Answer:2N
Explanation:
The speed of an object undergoing constant acceleration increases from 8.0 meters per second to 16.0 meters per second in 10. seconds. How far does the object travel during the 10. seconds?
Answers
Answer:
[tex] \boxed{d = 120\: meters} [/tex]
Explanation:
Given:
[tex] v_{0} [/tex] = 8.0 m/s[tex] v [/tex] = 16.0 m/s[tex] t [/tex] = 10 seconds[tex] d [/tex] = ?We can use this equation with the variables given to solve:
[tex] d \: = \frac{t \: (v + v_{0})}{2}[/tex] →
[tex] d \: = \frac{(10s) \: ((16.0 \: m/s) + (8.0 \: m/s))}{2} [/tex] →
[tex] d \: = \frac{(10s) \: (24 \: m/s)}{2} [/tex] →
[tex] d \: = \frac{(10 \: s \: • \: 24 \: m/s)}{2} [/tex] →
[tex] d \: = \frac{240 \: m}{2} [/tex] →
[tex] d \: = 120 \: m [/tex]
The distance traveled by the object in 10 seconds is 120 meters.
Given to us,
Final velocity of the object, [tex]v= 16\ meter/sec[/tex]
Initial velocity of the object, [tex]u= 8\ meter/sec[/tex]
Time for traveling, [tex]t= 10\ sec[/tex]
Using the first equation of motion, we can find out acceleration of the object [tex]a[/tex],
[tex]v=u+at\\16=8+a\times 10\\a= 0.8\ meter/sec^2[/tex]
Now using the second equation of motion and putting the value of [tex]a[/tex],
The distance[tex](S)[/tex] traveled by the object ,
[tex]\begin{aligned}S&= ut+\frac{1}{2}at^2\\&= 8\times 10+ \frac{1}{2}\times 0.8\times 10^2\\&= 120\ meters \\\end{aligned}[/tex]
Hence,The distance traveled by the object in 10 seconds is 120 meters.
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Choose the correct term to complete each blank.
It is (Harder/easier) to push an empty wheelbarrow than one filled with dirt. Because the dirt-filled wheelbarrow has more (Force/Speed/Mass) than the empty one, it requires more (Force/Inertia/Acceleration) to push at the same speed. A wheelbarrow containing grass clippings will require (More/Less/The Same) force to push at the same speed than a dirt-filled one because the grass clippings have less mass than dirt. Either wheelbarrow will require more force to push it uphill than downhill due to the effect of
(Friction/Inertia)
Answers
Explanation:
It is (Harder/easier) to push an empty wheelbarrow than one filled with dirt. Because the dirt-filled wheelbarrow has more (Force/Speed/Mass) than the empty one, it requires more (Force/Inertia/Acceleration) to push at the same speed. A wheelbarrow containing grass clippings will require (More/Less/The Same) force to push at the same speed than a dirt-filled one because the grass clippings have less mass than dirt. Either wheelbarrow will require more force to push it uphill than downhill due to the effect of (Friction/Inertia)
a crane gradually lifts a car with a mass of 1000kg at constant speed to height of 5cm. Calculate the potential energy of the car at that height.
Answers
Answer:
490.5
Explanation:
Formula
U = mgh
= 1000 x 9.81 x 0.05m
= 490.5
If ball A rolls off a 50 cm high table at the same instant that ball B rolls off a 75 cm high table, which will hit the ground first?
Answers
ball a
Explanation,
Hope it helps
A toy car is moved 8m, right, then 1.5m, right, and finally 3.0m, left. If it took 5.0 seconds total for the car to travel its 3 routes, then what is the average speed of the toy car?
Answers
Answer:
2.7
Explanation:
V=s÷t
v=13.5÷5.0
V=2.7
Suppose your friend mistakes a yardstick for a meter stick and measures the length of an intersection in your neighborhood. Is this error random or systematic? Which of these types of errors affect precision or accuracy?
Answers
How do you find the uncertainty of a meter stick?
Thus, L =5 . 7 cm measured with a meter stick implies an uncertainty of 0.05 cm. A common rule of thumb is to take one-half the unit of the last decimal place in a measurement to obtain the uncertainty
Can you answer this math homework? Please!
Answers
The Answers are in attachment.
It takes Stu, a slimy slug, 20 minutes to travel from his favorite bush to the local trash can (a trip of 30 meters), how far can he travel in 1 hour (60 minutes)?
Answers
Answer:
It take him 1 hour to travel 90 meters
Explanation:
Answer:
90 m
Explanation:
30 ÷ 20 = 1.5 m/min x 60 min = 90 m
A car has a velocity of 10m/s.it now accelerated to 1m for 0.25min.find d distance travelled
Answers
Answer:
the answer is 13.33 m/s²
PLS FAST WILL GIVE BRAINLIEST Describe why atoms can be neutral when they contain charged subatomic particles.
Answers
Answer:
Atoms are neutral if they have the same number of charged protons and electrons, balancing positive and negative charges. As long as the numbers of electron and protons are the same, the charges will balance.
A ball is thrown upward.
What is its initial vertical speed? The acceleration of gravity is 9.8 m/s and maximum height is 5.9 m, Neglect air resistance.
Answer in units of m/s.
Answers
Answer:
It is 10.75
Explanation:
When is the car exceeding a 10 km/hr speed limit?
Answers
If the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.
The given parameter:
speed limit = 10 km/hour
To find:
when the car will exceed the speed limitSpeed is defined as the total distance traveled divided by the total time taken for the journey.
[tex]speed = \frac{distance}{time}[/tex]
If the car travels any distance greater than 10 km in 1 hour or less than 1 hour, it has exceeded the speed limit of 10 km/hr.
For example, let's say the distance traveled by the car in one hour is 11 km. The speed of the car is 11 km/hr which is greater than the speed limit.
Thus, we can conclude that if the car travels a distance greater than 10 km in one hour or less than one hour, it has exceeded the speed limit.
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Which of the following is an example of an indirect tax?
Answers
Answer:Sales tax, value-added tax, excise tax, and customs duties are examples of indirect taxes.
Explanation:
¿Qué cantidad de calor absorbió una masa de 4 g de cinc al pasar de 20 °C a
180 °C?
Answers
(amount of heat)Q = ? , (Mass) m= 4 g , ΔT = T f - T i = 180 c° - 20 °c = 160 °c ,
Ce = 0.093 cal/g. °c
Q = m C ΔT
Q = 4 g × 0.093 cal/g.c° × ( 180 °c- 20 °c )
Q= 4×0.093 × 160
Q = 59.52 cal
I hope I helped you^_^
NEED HELP RN!!
All scientist use the scientific method 1 point True False
Answers
Answer:
True
Explanation:
It is true because scientists must use this method to get a correct and accurate solution.
In physics, what is the positive and negative sign used for when applied to velocity and acceleration?
Answers
Answer:
Opposite direction
Explanation:
For example: The first object travels in the direction pointing to east, while the other one travels pointing to the west.
The first object will have a positive value while the second one will have a negative, cause it's going to the opposite direction
What is electrical energy
Answers
Answer:
Electric is produce by water it is very helpful in our life
1. A car travels a distance of 200 m in 4 seconds. What is the velocity of the car?
Answers
Answer:
50m/s
Explanation:
here;
distance travelled(s): 200m
time taken(t): 4s
now
velocity(v): s/t
= 200/4
Velocity: 50m/s#
What is a primary source?
A.A textbook that explains a wide range of science topics
B.A technical article written by an experimenter
C.A newspaper article about a recent discovery
D.A summary of research written for an average reader
Answers
Answer:
Explanation:
B
A primary source is one that is written by the person who lived through an advenure or is one doing the action and recording it.
In this case, the answer is B.
Most frequently, for a historian, a primary source is something like a diary or a bunch of letter written by someone experiencing something.
It cannot be about someone else's work. Not C or D
A textbook is not the answer either. It is a bulky summary of scientific, or other kind of thought.
) A jeep starts from the state of rest. If its velocity becomes 60 km/hr in 5 minutes, (i) What is the acceleration of the jeep? (ii) What is the distance covered by the jeep? (Ans: 0.056 m/s", 2500 m)
Answers
Answer:
Ans: a=0.056ms^-2 S=2500m
Explanation:
vi=0ms^-1
vf=60km/hr= [tex]\frac{60*1000}{3600}[/tex]=16.6ms-1
a=[tex]\frac{vf-vi}{t}[/tex]
=[tex]\frac{16.6-o}{5*60}[/tex]
a=0.056ms^-2S=?S=vit+[tex]\frac{1}{2}[/tex][tex]at^{2}[/tex]
S=0+[tex]\frac{1}{2}[/tex]*0.056*[tex](300)^{2}[/tex]
S=2500mSome expressways are curved, banked and designed to maximize ___________ at higher speeds.
Acceleration
Safety
Traffic
Conflict
Answers
Answer:
Safety
Explanation:
Expressways are banked to resist centifugal action
xy+4z=
X=2
Y=2
Z=3
Solve for
Answers
Answer:
x×y=2×2=4. 4×z=4×3=12. 4+12=16
If a line has a slope of 2 and a
rise of 12 what was the run
Answers
Bbbcccccc
Light travels at a speed if 186,000 miles per second. A light-year is the distance that light travels in one year. What is the distance of a light year (in miles)?
Answers
Answer:
5,865,696,000,000 miles
Explanation:
one year = 31536000 second
31536000 × 186000 = 5,865,696,000,000
