Why is sunlight considered a renewable resource? Which are disadvantages of renewable resources? Check all that apply. Renewable energy supplies may not be completely reliable. Renewable energy sources will never run out. Renewable energy produces large quantities of waste products. It is difficult to generate electricity in large quantities using renewable resources. Many renewable energy facilities have higher operating costs
Answers
Sunlight is considered a renewable resource because it is a source of energy that can be replenished over a relatively short period of time.
Sunlight is constantly being produced by the sun and will continue to be produced for billions of years.
The disadvantages of renewable resources are:
- Renewable energy supplies may not be completely reliable.
- Many renewable energy facilities have higher operating costs.
The other two options are not disadvantages of renewable resources. In fact, renewable energy sources will never run out, and they produce relatively smaller quantities of waste products compared to non-renewable sources.
While it is true that it can be difficult to generate electricity in large quantities using renewable resources, it is not a disadvantage in and of itself, but rather a challenge that can be addressed through further research and development.
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Related Questions
A 0.10-m 3 0.20-m 3 0.30-m block is suspended from a wire and is completely under water. What buoyant force acts on the block
Answers
The buoyant force acting on the block is 58.8 N.
Calculation:The dimensions of the block are given as 0.10 m, 0.20 m and 0.30 m.
The volume of the block will be = 0.10 × 0.20 × 0.30 m³
= 0.006 m³
We know that,
W = mg .....(1)
where,
W = weight of the block
m = mass of the block
g = acceleration due to gravity = 9.8 m/s²
We also know that mass is proportional to density and volume
m = ρ.V .....(2)
Substituting the equation (2) in (1)
W = ρ.V.g .....(3)
Density of water, ρ = 1000 kg/m³
Force is the net weight acting on the block
F = W = ρ.V.g
F = 1000 × 0.006 × 9.8
F = 58.8 N
Therefore, the buoyant force acting on the block is 58.8 N.
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You hold a picture motionless against a wall by pressing on it, as shown in the figure. (Figure 1) Figure 1 of 1The figure shows a hand, holding a picture by pressing it against the vertical wall. Part A Identify all forces acting on the object and draw the free-body diagram.
Answers
The number of forces acting on the picture was normal force , gravitational force, weight of the picture, force exerted by the hand.
define gravitational force ?
Have you ever wondered how planets orbit the Sun? Shouldn't the Earth and the Moon merely crash since the Earth draws the Moon and the Moon attracted the Earth? Why isn't the Moon falling? Why does it continue to revolve around the Earth?
Understanding the basics of gravity can provide answers to all of these problems. The gravitational force is the global force of attraction that acts between things. It is one among the universe's basic forces.
normal force , gravitational force, weight of the picture, force exerted by the hand.
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Answer: me personally I think its figure 4
:D
what is momentum
what is momentum in words
Answers
Answer:
It's a strength or force
Explanation:
the quantity of motion of a moving body, measured as a product of its mass and velocity
Answer:
momentum is a quality define as the product of the mass and velocity of an object.
A robot that is exploring the surface of Mars has a mass of 136 kg. If the gravitational force acting on the robot is 504.6 N downward, what is the free-fall acceleration on Mars?
Answers
The free-fall acceleration on Mars is 3.71 m/s²
What do you mean by free fall?A body is said to be in freefall when it only moves in relation to the Earth's gravity. An external force exerted on the ball will cause its motion to accelerate. Gravitational acceleration is another name for this rate of free fall.According to Newton's second law of motion, force (F) = mass (m) times acceleration, an item in free fall will move with an acceleration (a). We can use a little mathematics to determine the object's acceleration in terms of the net external force and the object's mass (a = F / m).Given :
gravitational force acting on the robot is 504.6 N
F= 504.6 N
mass of the robot = 136 kg
a = F/ m
= 504.6/ 136 =3.71 m/s²
The free-fall acceleration on Mars is 3.71 m/s²
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Consider that each tick mark represents 1 mile on the vector grid, use the Gizmo to simulate the following scenario: Imagine that a hiker walked 6 mi SE and then 4 mi N. Find the sum of the vectors. Which of the following best describes the general direction that the blue line points?
a) south
b) west
c) east
d) cannot be determined from this information
Answers
Answer:
The best description of the general direction that the blue line points is East direction
Answer:
c. east
Explanation:
Una tractomula se desplaza con rapidez de 69 km/h. Cuando el conductor ve una vaca atravesada enmedio de la carretera, acciona los frenos y se detiene 4 s después. Si la vaca estaba a 25 m de la tractomulacuando el conductor pisó el freno. ¿atropelló la vaca? Justifique su respuesta.
Answers
Answer:
Los datos que tenemos:
Rapidez: 69km/h
Tiempo que tarda en frenar = 4s.
Distancia inicial entre la tracto-mula y la vaca = 25m
Ok, la ecuación de desaceleración es:
D = (sf - si)/t
sf = velocidad final = 0m/s
si = velocidad inicial = 69km/h
t = tiempo = 4s
D = -69km/h/4s
ok, 1h = 3600s
D = (-69km/s)*1/(4*3600s) = -0.0048 km/s^2
Entonces la ecuación de aceleración es:
a(t) = -0.0048 km/s^2
Para la velocidad, integramos sobre el tiempo
v(t) = (-0.0048 km/s^2)*t + v0
donde v0 es la velocidad inicial, en este caso v0 = 69km/3600s = 0.0191km/s
v(t) = (-0.0048 km/s^2)*t + 0.0191km/s
Para la posición volvemos a integrar sobre el tiempo, esta vez suponemos la posición inicial igual a cero.
p(t) = (1/2)*(-0.0048 km/s^2)*t^2 + 0.0191m/s*t
Ahora, si p(t=4s) < 25m, esto implica que la tracto-mula no impacto con la vaca.
p(4s) = (1/2)*(-0.0048 km/s^2)*(4s)^2 + 0.0191km/s*4s = 0.038km
y 1km = 1000m
0.038km = 0.038*1000m = 38m
Entonces si, atropello a la vaca.
A skater holds her arms outstretched as she spins at 120 rpm. Part A What is the speed of her hands if they are 140 cm apart? Express your answer with the appropriate units
Answers
According to the question the speed of the skater's hands is 528 m/min.
To calculate the speed of the skater's hands, we can use the formula:
Speed = Circumference * Revolutions per minute
Given that the skater's hands are 140 cm apart and she spins at 120 rpm, we need to calculate the circumference of the circle formed by her hands.
The circumference of a circle is given by the formula:
Circumference = 2 * π * radius.
In this case, the radius is half the distance between the skater's hands, which is 140 cm / 2 = 70 cm.
Converting the radius to meters, we have 70 cm = 0.7 m.
Now we can calculate the circumference:
Circumference = 2 * π * 0.7 m = 4.4 m (rounded to one decimal place).
Finally, we can calculate the speed of the skater's hands:
Speed = Circumference * Revolutions per minute
= 4.4 m * 120 rpm
= 528 m/min.
Therefore, the speed of the skater's hands is 528 m/min.
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2. 9-kg sacks of potatoes are repeatedly dropped onto a platform held up by a large spring and then removed before the next sack falls. How does the distance the spring compresses when the potatoes are dropped from a first height of 3. 9 m compare to the distance the spring compresses when dropped from a second height of 15. 3 m?
Answers
The distance the spring compresses when the potatoes are dropped from a height of 15.3 m is four times greater than the distance it compresses when dropped from a height of 3.9 m.
When an object is dropped, its potential energy is converted into kinetic energy as it falls. The potential energy is given by the equation PE = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height. As the potato sacks have the same mass, the potential energy is directly proportional to the height.
The compression of a spring is related to the potential energy transferred to it. According to Hooke's law, the force exerted by a spring is proportional to its compression. Since the potential energy is proportional to the height, and the force is proportional to the compression, we can conclude that the compression of the spring is also proportional to the height.
Therefore, when the potatoes are dropped from a height of 15.3 m compared to 3.9 m, the height increases by a factor of approximately four. Consequently, the distance the spring compresses will also increase by a factor of four.
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If a 1.00-kIIz sound source moves at a speed of 50.0 m/s toward a listener who moves at a speed of 30.0 m/s in a direction away from the source, what is the apparent frequency heard by the listener? (a) 796 Hz (b) 949 Hz (c) 1000 Hz (d) 1068 Hz (c) 1273 Hz
Answers
The apparent frequency heard by the listener is lower than the actual frequency due to the Doppler effect.
The Doppler effect is the change in frequency of sound, light, or other waves as the source or observer moves. The formula for the Doppler effect is given as follows:Where,
- f' = Apparent frequency
- f = Actual frequency
- v = Velocity of sound
- Vd = Velocity of the detector
- Vs = Velocity of the source
The actual frequency of the sound source is given as
f = 1.00 kHz
= 1000 Hz.
The velocity of sound in air is approximately v = 343 m/s. The velocity of the detector is given as Vd = 30 m/s in a direction away from the source. The velocity of the source is given as Vs = 50 m/s toward the listener.
Substituting the given values in the above equation, we get:
Thus, the apparent frequency heard by the listener is lower than the actual frequency due to the Doppler effect. The correct option is (a) 796 Hz.
The Doppler effect is the change in frequency of sound, light, or other waves as the source or observer moves. The apparent frequency heard by the listener is lower than the actual frequency due to the Doppler effect. In this question, the correct option is (a) 796 Hz.
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A ski jumper starts from rest from point A at the top of a hill that is a height h1 above point B at the bottom of the hill. The skier and skis have a combined mass of 80 kg. The skier slides down the hill and then up a ramp and is launched into the air at point C that is a height of 10 m above the ground. The skier reaches point C traveling at 42m/s.The skier leaves the ramp at point C traveling at an angle of 25°above the horizontal.
Calculate the horizontal distance from the point directly below C to where the skier lands.
Answers
The horizontal distance from the point directly below C to where the skier lands is 54.2 m.
Determining the horizontal distanceApplying conservation of energy and conservation of momentum principles.
First, let's find the initial potential energy of the skier at point A:
PE1 = mgh1
= (80 kg)(9.81 m/s^2)(h1)
Next, let's find the final kinetic energy of the skier at point C:
KE2 = (1/2)mv2^2
= (1/2)(80 kg)(42 m/s)^2
Since there is no friction,
PE1 = KE2 + PE3
where PE3 is the potential energy of the skier at point C:
PE3 = mgh3 = (80 kg)(9.81 m/s^2)(10 m)
Substituting the values, we get:
(80 kg)(9.81 m/s^2)(h1) = (1/2)(80 kg)(42 m/s)^2 + (80 kg)(9.81 m/s^2)(10 m)
to determin h1,
h1 = (1/2)(42 m/s)^2/9.81 m/s^2 + 10 m
h1 = 144.8 m
Therefore, the height of the hill is 144.8 m.
Since there is no external force acting on the skier in the horizontal direction, the horizontal momentum is conserved:
mvi = mvx
vx = v2cos(25°)
Substituting the values, we get:
vi = (42 m/s)cos(25°)
vi = 37.9 m/s
Therefore, the initial horizontal velocity of the skier at point C is 37.9 m/s.
to determine time of flight:
h = (1/2)gt^2
t = √(2h/g)
t = √(2(10 m)/(9.81 m/s^2))
t = 1.43 s
applying the horizontal velocity and the time of flight to find the horizontal distance traveled:
d = vixt
d = (37.9 m/s)(1.43 s)
d = 54.2 m
The horizontal distance from the point directly below C to where the skier lands is 54.2 m.
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Answer:
To solve this problem, we can use the conservation of energy and the conservation of momentum. We can assume that there is no friction or air resistance, so the total mechanical energy of the skier is conserved throughout the motion.
Let's denote the initial height of the hill as h1, the height of point C above the ground as h2, the horizontal distance from point A to the point directly below C as x, and the angle of the skier's velocity vector with respect to the horizontal as θ.
First, we can calculate the speed of the skier at the bottom of the hill, point B, using conservation of energy:
mgh1 = (1/2)mvB^2 where m is the mass of the skier and vB is the speed of the skier at point B.
Solving for vB, we get:
vB = sqrt(2gh1)
Next, we can calculate the velocity of the skier at point C using conservation of energy:
mgh1 = (1/2)mvB^2 + (1/2)mvC^2
where vC is the speed of the skier at point C.
Solving for vC, we get:
vC = sqrt(2gh1 + vB^2)
We can also express the velocity vector at point C in terms of its x and y components:
vCx = vCcos(θ)
vCy = vCsin(θ)
Using conservation of momentum, we can find the horizontal distance x from the point directly below C to where the skier lands:
mvCx(h2/(-vCy)) = mvCx(t) + (1/2)gt^2
where t is the time taken for the skier to reach the ground and we have used the fact that the vertical displacement from point C to the ground is h2. We can solve for t by substituting vCy = vC*sin(θ) and solving the quadratic equation:
(1/2)gt^2 + vC*sin(θ)*t - h2 = 0
Solving for t, we get:
t = (-vCsin(θ) + sqrt(vC^2sin(θ)^2 + 2gh2))/g
Finally, we can substitute this expression for t into the equation for x to get:
x = vCx*t
Substituting the expressions for vCx, t, and vC, we get:
x = (vC^2sin(θ)cos(θ) - sqrt(vC^4sin(θ)^2cos(θ)^2 + 2gh2vC^2sin(θ)^2))/(g*sin(θ))
Plugging in the given values, we get:
x ≈ 184.5 meters
Therefore, the horizontal distance from the point directly below C to where the skier lands is approximately 184.5 meters.
you walk 5 km east then turned and walked 2km west what would your displacement be
Answers
Answer:
3km? im a beginner
A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down theslope, its speed is 5 m/s. But 4 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?
Answers
Answer: 4.25 m/s^2.
Explanation: We can use the following formula to calculate the average acceleration:
average acceleration = (final velocity - initial velocity) / time
where the initial velocity is 5 m/s, the final velocity is 22 m/s, and the time is 4 seconds.
Substituting these values in the formula, we get:
average acceleration = (22 m/s - 5 m/s) / 4 s
average acceleration = 17 m/s / 4 s
average acceleration = 4.25 m/s^2
Therefore, the average acceleration of the roller coaster car is 4.25 m/s^2.
a dipole centered at the origin with moment 5.0 microcm is oriented at an angle of pi/6 with respect to the x-axis the positive charge is in the first quadrant find the torque an electric field of 9.0*10^6 i n/c exerts on the dipole
Answers
The torque exerted on the dipole in the electric field is 22.5 N and directed into the plane of the paper.
The moment of the dipole,p = 5 micro cm= 5×10⁻⁶ Cm. The angle at which the dipole is oriented, θ = π/6 with respect to the x axis. The magnitude of the electric field ,E= 9×10⁶ N/C.
The magnitude of torque,T = p×E×sinθ = 5×10⁻⁶×9×10⁶×sin(π/6) = (9×5)/2 = 22.5Nm.
Since torque is a vector quantity and it has both magnitude and direction.
The direction of the torque is given by the hand screw rule of the cross product of r and F. So the direction of the torque is in the opposite of z axis. In this problem the direction is directed into the plane of electric field and the dipole.
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A hammer strikes a nail with a 8 N force for 0.018 seconds. Calculate the impulse of the hammer.
Answers
Answer:
0.144
Explanation:
Impulse is defined as force multiplied by time
please mark me brainliest
what is the Ramsar convention?
Answers
A boat travels at a constant speed of 12.0m/s for 97s. How far does it go?
Answers
Answer:
your mama
Explanation:
because i said so
Answer:
1164m
Explanation:
speed=distance/time, therefore Distance=speed*time.
Now that we have our equation, we plug in the variables, as we do not need to convert our units.
12*97= 1164 m
If you toss a coin straight upward in a train that gains speed while the coin is in the air, the coin will land:
a. as if you were at rest
b. in front of you
c. in back of you
Answers
If you toss a coin straight upward in a train that gains speed while the coin is in the air, the coin will land: b. in front of you.
When you toss the coin upward, it initially follows a parabolic trajectory as influenced by the upward force imparted to it. However, while the coin is in the air, the train gains speed, which means that both you and the coin are moving forward. Since the coin retains its forward momentum along with the train, it will land slightly ahead of the position where it would have landed if the train were stationary. This is because the coin continues moving forward horizontally while it is in the air, and due to the train's acceleration, the coin covers some additional horizontal distance before it returns to the ground. As a result, the coin will land in front of you when compared to its landing position in a stationary train.
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In air, a sound wave with a frequency of 196 Hz has a wavelength of about 1.76 meters. What is the wavelength of a wave of the frequency is increased to 784 Hz?
0.44 meters
0.57 meters
0.88 meters
1.76 meters
Also if anyone has the whole test PLEASE help me out!!!
Answers
The wavelength of a wave of the frequency is increased to 784 Hz will be 0.57 metre.
What is wavelength ?The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.
The given data in the problem is;
f₁ is the frequency of a sound wave in case 1 = 196 Hz
\(\lambda\)₁ is the wavelength for the = 1.76 meters.
f₂ is the frequency of a sound wave in case 2 = 784 Hz
\(\lambda_2\) is the wavelength for case 2=?
The speed of the wave for the same medium is same which is given as;
\(\rm v = \lambda_1 f_1 \\\\ \rm v = 1.76 \times 196 \\\\ \rm v =344.96\ m/sec\)
For case 2;
\(\lambda_2 = \frac{v}{f_2} \\\\ \lambda_2 = \frac{344.96}{784} \\\\ \lambda_2=0.44\)
Hence the wavelength of a wave of the frequency is increased to 784 Hz will be 0.57 metre.
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A generator converts mechanical energy to electrical energy by using a conducting metal loop turning in a...
A. magnetic field
B. Gravitational field
C. Steel sphere
D. Cooper sphere
Answers
Answer:
B- Gravitational Field
Explanation:
Have a nice day, hope you get a good grade!
The generator converts mechanical energy to electrical energy by using a conducting metal loop turning in a gravitational field.
What is the gravitational field?In terms of physics, a gravitational field represent the model that should be used for explaining the impact where the massive body should be extended into the space around it. Also, generating the force on the another massive body.
Therefore, based on the above explanation, the correct option is b.
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Convert 3500 mm into meter? science measurement question
Answers
So the answer would be 3.5 meters (3.5m)
A wave has a wavelength of 4 m and a frequency of 85 Hz. What is the speed of this wave?
Answers
The speed of wave with a wavelength of 4 m and a frequency of 85 Hz is 340m/s
The speed of a wave is the product of the frequency of the wave and its wavelength. Mathematically, it is expressed as:
\(v = f \lambda\) where:
f is the frequency
\(\lambda\) is the wavelength
Given the following:
f =85Hz
\(\lambda\) = 4 m
Substitute the given parameter into the formula:
v = 85 × 4
v = 340m/s
Hence the speed of wave with a wavelength of 4 m and a frequency of 85 Hz is 340m/s
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A spring (k=2.3 n/m) is attached to an object of mass =10kg. If the object is hung from the ceiling by this spring how much would the spring be stretched
Answers
The spring be stretched is 43.478.
Springs also have elastic limits. If you stretch the spring too much it will not return to its original position. Permanently deformed. Stretchable materials return to their original length when stretched or contracted. According to Hooke's Law, when a spring is stretched, the applied force is proportional to the stretch from its equilibrium length.
calculation:-
k=2.3 n/m
mass = 10 Kg
10m x 10g = 100N / 2.3
= 43.478.
To calculate the inner diameter D inner you must multiply the wire diameter by 2 and subtract the result from the outer diameter D outer. To calculate the outer diameter do the reverse procedure. Multiply the wire diameter by 2 and add the result to the inner diameter. To stretch the coil, the steel must be stretched beyond its yield point. This weakens the spring causing it to return to its original height and slowly decrease in height.
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Maria is camping when she starts to smell smoke. She turns on her radio and hears that a forest fire is heading her way. How can Maria's organ systems interact to help keep her safe? Include at least five organ systems in your response.
Answers
The hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.
The body is equipped to respond to emergency situations through the fight and flight hormones secreted by the adrenal gland. This chemical messengers send a message to the brain which now causes reactions such as increased pumping of blood by the heart and a faster breathing rate by the lungs.
Hence, the hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.
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How deep is the floor of the ocean if a sonar sound takes 7 seconds to return back to the ship?
Answers
Help!! will give brainliest
Answers
The area of each cylinder is 50.27 in² and 113.10 in² for both input and output respectively.
The pressure in the system is 1.98 psi.
The force the output cylinder can lift is 225 lb.
The mechanical advantage of the system is 2.25.
How to solve mechanical advantage?I) The area of a circle is calculated by the formula:
Area = πr²
Where π = mathematical constant with an approximate value of 3.14, and r = radius of the circle.
The radius of the input cylinder is 4 inches, so the area of the input cylinder is:
Ain = πr² = 3.14 × 4² = 50.27 in²
The radius of the output cylinder is 12 inches, so the area of the output cylinder is:
Aout = πr² = 3.14 × 12² = 113.10 in²
II) Pressure is calculated by the formula:
Pressure = Force / Area
The force applied to the input cylinder is 100 pounds, and the area of the input cylinder is 50.27 square inches, so the pressure in the system is:
P = F / A = 100 lb / 50.27 in² = 1.98 psi
III) The mechanical advantage of a hydraulic press is calculated by the formula:
MA = Aout / Ain
The area of the output cylinder is 113.10 square inches, and the area of the input cylinder is 50.27 square inches, so the mechanical advantage of the system is:
MA = Aout / Ain = 113.10 in² / 50.27 in² = 2.25
The force that the output cylinder can lift is equal to the force applied to the input cylinder multiplied by the mechanical advantage of the system.
So, the force that the output cylinder can lift is:
Fout = Fin × MA = 100 lb × 2.25 = 225 lb
IV) The mechanical advantage of a hydraulic press is the ratio of the force that the output cylinder can lift to the force that is applied to the input cylinder. In this case, the mechanical advantage of the system is 2.25. This means that the output cylinder can lift 2.25 times as much force as is applied to the input cylinder.
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Animal arid plant cells go through cellular
respiration
true
false
Answers
HEY CAN ANYONE PLS ANSWER DIS IN UR OWN WORDS!!!!!!!!
Answers
Answer:
Rule 1: Non-zero numbers are significant
Rule 2: Zeros located between non-zero numbers are significant
Rule 3: Zeros before the first non-zero number are not significant
Rule 4a: Zeros after a non-zero number are significant IF there is a decimal
Rule 4b: Zeros after a non-zero number are not significant IF there is NO decimal
which is heavier a pound of bricks or a pound of feather
Answers
Answer:
pound of bricks
meh wrong ? XD
Answer:
neither is heavier.both are equal
Explanation:
since 1 pound equals 16 oz.(1 pound=16 oz.).,both are equal too!
Describe two adaptations and explain how they help you survive.
Answers
Answer:
My feet and my fists
Explanation:
My feet help me walk
and my fists help me one punch people
Green light travels by what type of wave? (2 points) a Conductive b Electronic c Conducive d Electromagnetic 2
Answers
Answer:
Electromagnetic
Explanation:
Electromagnetic waves are those waves that do not require any material medium for propagation. They arise from a vibration of electric and magnetic fields.
The electromagnetic spectrum is comprised of many waves. One of the waves in the spectrum is visible light.
Visible light is in turn composed of seven different wavelengths of which green light is one of them. Hence, green light travels by electromagetic wave.