To heat the house, the boiler transfers 15 MJ of energy in 10 minutes.
Calculate the power of the boiler.
Answers
The formula is P = E/t, where P means power in watts, E means energy j , and t means time in seconds. This formula states that power is the consumption of energy per unit of time.
P = 15 M / 10*60
M = mega = 10⁶
15 *10⁶ / 600
= 25000 watt
To solve this, we must be knowing each and every concept behind energy transfer. By doing work or by transferring heat, energy can be transferred. Therefore, to heat the house, the boiler transfers 15 MJ of energy in 10 minutes, the power of the boiler is 25000 watt.
What is energy transfer?Energy transfer is a phenomenon in which energy transfer from one matter to another matter. energy requirement is necessary to move nay object so work has to be done by the gas to the piston.
Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules.
Mathematically, the formula for power can be given as
Power = Energy/time
time=10×60=600s
mega = 10⁶
Power=15 ×10⁶ / 600
Power = 25000 watt
Therefore, to heat the house, the boiler transfers 15 MJ of energy in 10 minutes, the power of the boiler is 25000 watt.
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Related Questions
Una cuerda de 20 pies se estira entre dos arboles. Un peso W cuelga del centro de la cuerda hace que el punto medio de la misma y baja 2 pies. Si la tensión resultante en la cuerda es de 200 lb,¿cual es la manigtud de la masa?
Answers
Answer:
La magnitud de la masa del peso es 78.447 libras-masa.
Explanation:
La tensión es una fuerza de reacción de la cuerda causada por la acción de una fuerza externa. En este caso, esa fuerza externa es el peso que cuelga en el centro de la cuerda. Abajo hemos adjuntado una representación simplificada del enunciado.
Por las leyes de Newton, tenemos la siguiente ecuación de equilibrio conformada por tres fuerzas:
\(\vec T_{1} + \vec T_{2} + \vec W = (0, 0)\, [N]\) (1)
Donde:
\(\vec T_{1}\), \(\vec T_{2}\) - Tensiones a cada lado de la cuerda, en newtons.
\(\vec W\)- Peso, en newtons.
Si sabemos que \(\vec T_{1} = T\cdot (\cos \alpha, \sin \alpha)\), \(\vec T_{2} = T\cdot (-\cos \alpha, \sin \alpha)\) y \(\vec W = W\cdot (0, -1)\), entonces tenemos la siguiente ecuación vectorial:
\(T\cdot (\cos \alpha, \sin \alpha) + T\cdot (-\cos\alpha, \sin \alpha) + W\cdot (0, -1) = (0,0)\)
\(T\cdot (0, 2\cdot \sin \alpha) = W\cdot (0, 1)\)
Esto permite reducir la anterior expresión a una fórmula escalar:
\(2\cdot T\cdot \sin \alpha = W\)
Donde \(\alpha\) es el ángulo de inclinación de la cuerda, medido en grados sexagesimales.
El ángulo de inclinación de la cuerda se determina mediante la siguiente fórmula trigonométrica inversa es:
\(\alpha = \tan^{-1} \left(\frac{2\,ft}{10\,ft}\right)\)
\(\alpha \approx 11.310^{\circ}\)
Si conocemos que \(\alpha \approx 11.310^{\circ}\) y \(T = 200\,lbf\), entonces la magnitud del peso es:
\(W = 2\cdot (200\,lb)\cdot \sin 11.310^{\circ}\)
\(W \approx 78.447\,lbf\)
En el Sistema Imperial, las fuerzas son medidas en forma gravitacional, entonces la magnitud de la fuerza gravitacional del peso equivale a la magnitud de su masa. En síntesis, la magnitud de la masa es \(78.447\,lbm\).
La magnitud de la masa del peso es 78.447 libras-masa.
The moon revolves around Earth. The moon travels at a speed of about 1 km/s. What keeps the moon in orbit around Earth?
A.Nuclear Fusion
B.Gravity
C.Magnetism
D.Ocean Tides
Answers
Answer:
I know its not A or D so its B or C and the more logical answer would be B. gravity
Explanation:
Which statement describes one of Wegener's ideas that contributed to the theory of continental drift?
Answers
Answer:
Over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart, forming the continents as they are known today.
Explanation:
i took the active
Answer:
the continents were once connected as one landmass.
Explanation:
right on edge 2022
true or false? rocks have organic materials and fossil remains in them
Answers
Answer:
trueeeee
Explanation:
An arrow shot vertically upwards at a speed of 40m/s, hit the target after 2s. How high is the target? How fast did the arrow hit the target?
Answers
Answer:
Explanation:
kinematics
d=V1*t + 1/2* a * \(t^{2}\)
plug in your knowns into the above equation
d=40*2+1/2*(-9.8)*\(2^{2}\)
60.4m
Vf = Vi+ a*t
Vf = 40 + (-9.8)*2
Vf = 20.4 m/s
forces that are equal in strength an opposite in direction are
Answers
Answer:
...................
Explanation:
The work per unit charge required to move a charge between two points in an electric circuit defines electric
A) force
B) Power
C) field strength
D) potential difference
Answers
The work per unit charge required to move a charge between two points in an electric circuit electric potential difference. The right option is D) potential difference
What is electric potential difference?Potential difference can be defined as the work done in moving a unit charge from one point to another in an electric field. The S.I unit of potential difference is volts (V).
From the question,
Force: is the product of mass and acceleration Power: This is the rate at which work is done.Field strength: This is the force per unit charge in a field.Potential difference: This is the work done in moving a unit charge from one point to another in a field.Hence, from the above, the right option is D) Potential difference
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A projectile is launched with an initial velocity 60m/s at an angle 60° to the vertical. What the magnitude of it's displacement after 5s.
Answers
Answer:
the magnitude of the displacement after 5s is 137.31 m.
Explanation:
Given;
initial velocity of the projectile, u = 60 m/s
angle of projection, θ = 60°
time of motion, t = 5s
the vertical component of the velocity, \(u_y= u\ sin \theta = 60sin(60^0)\)
The magnitude of the displacement after 5s is calculated as;
\(h = u_yt -\frac{1}{2} gt^2\\\\h = 60sin (60^0)\times 5 - \frac{1}{2} (9.8)(5)^2\\\\h = 259.81-122.5\\\\h = 137.31 \ m\)
Therefore, the magnitude of the displacement after 5s is 137.31 m.
Among the reasons for the frequent use of composite measures is(are) that:
a. the researcher is seldom able to develop in advance single indicators of complex concepts.
b. a single data item might not have enough categories to provide a range of variation.
c. composite measures give a more comprehensive and accurate indication of a given variable.
d. they are efficient data reduction devices.
e. all of these choices.
Answers
Among the reasons for the frequent use of composite measures is that they give a more comprehensive and accurate indication of a given variable. Besides, the researcher is seldom able to develop in advance single indicators of complex concepts. A single data item might not have enough categories to provide a range of variation. And lastly, they are efficient data reduction devices.
So, the correct answer is option (e) all of these choices.
What are composite measures?Composite measures are used to combine several variables or scores into a single measurement or index. In other words, they are multidimensional measurement tools. It is useful to make this kind of index because it is possible to calculate the reliability and validity of composite measures, which are statistical measures that indicate whether or not the measurements were conducted accurately or are otherwise legitimate.
For example, if a researcher wants to assess the economic development of a country, he/she could create a composite measure by combining data on GDP per capita, literacy rates, and poverty rates. In this case, each of the three variables reflects a different aspect of economic development.
So, the correct answer is E.
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2. A 2.0 kg block rests on a level surface. The coefficient of static friction is µ[s] = 0.60 , and the coefficient of kinetic friction is µ[k] = 0.40 , A horizontal force, X, is applied to the block. As X is increased, the block begins moving. Describe how the force of friction varies as X increases from the moment the block is at rest to when it begins moving. Indicate how you could determine the force of friction at each value of X―before the block starts moving, at the point it starts moving, and after it is moving. Show your work.
Answers
(a) The force of friction increases as the applied force increases.
(b) The force of friction at each value of X (applied force ) can determined by subtracting the net force on the block from the applied force.
What is coefficient of static friction?The coefficient of static friction is the ratio of the maximum static friction force between the surfaces in contact before movement commences to the normal force.
Mathematically, the coefficient of static friction is given as;
μ = F/N
where;
μ is the coefficient of static frictionN is the normal force F is the static frictional forceBefore the block start moving, the static friction must be overcame since it prevents the block from moving.
The net force on the block is determined by applying Newton's second law of motion.
F - Ff = ma
F = ma + Ff
where;
F is the applied forceFf is the force of frictionFrom the formula above, as the applied force increases the force of friction increases as well.
The force of friction at each value of X (applied force ) is calculated as follows;
Ff = F - ma
Ff = F - F(net)
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point charges of .24 and .73 are placed .45 m apart. at what point along the line between them is the electric field zero? give your answer in meters from the .24 charge
Answers
There are two points along the line where the electric field is zero: one at a distance of 0.147 m from the 0.24 charge and another at a distance of 0.302 m from the 0.24 charge.
To find the point along the line between the two charges where the electric field is zero, we can use the principle of superposition, which states that the electric field at a point due to multiple point charges is the vector sum of the electric fields due to each individual charge.
Let's call the distance from the 0.24 charge to the point where the electric field is zero "x". The distance from the 0.73 charges to the same point is "0.45 - x" (since the two charges are 0.45 m apart). We want to find the value of x that makes the electric field at that point zero.
Coulomb's law gives the electric field at a distance r from a point charge q:
E = k * q / r^2
where k is Coulomb's constant (8.99 x 10^9 N m^2 / C^2).
So, the electric field at the point x due to the 0.24 charge is:
E1 = k * 0.24 / x^2
And the electric field at the same point due to the 0.73 charge is:
E2 = k * 0.73 / (0.45 - x)^2
Since the total electric field at the point x is zero, we can set E1 + E2 = 0 and solve for x:
k * 0.24 / x^2 + k * 0.73 / (0.45 - x)^2 = 0
Multiplying both sides by x^2 (0.45 - x)^2, we get:
0.24 (0.45 - x)^2 + 0.73 x^2 = 0
Expanding and simplifying, we get:
0.2142 x^2 - 0.2052 x + 0.0591 = 0
Using the quadratic formula, we can solve for x:
x = [0.2052 ± sqrt(0.2052^2 - 4 * 0.2142 * 0.0591)] / (2 * 0.2142)
x ≈ 0.147 m or x ≈ 0.302 m
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what is a crystalline solid?
Answers
Answer:
A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions
Explanation:
your welcome
Show that strong monotonicity implies local non-satiation but
not vice versa.
Answers
In microeconomics, both strong monotonicity and local non-satiation have different meanings and implications. Both terms refer to the preferences of the consumer. The two concepts are related but have some differences.
Let's define each term.
Strong monotonicity: Strong monotonicity is defined as a preference relation of a consumer, such that for any two bundles of goods, if bundle A has more of each good than bundle B, then the consumer strictly prefers A to B.
Local non-satiation: Local non-satiation implies that a consumer always prefers any bundle of goods that contains slightly more of any good than a different bundle, holding the other goods in the two bundles constant.
Now, we'll see that strong monotonicity implies local non-satiation but not vice versa.
Let's suppose a consumer has a preference for bundle A over bundle B if A has more of each good than B. This preference implies that if any good in bundle B is increased, the consumer will prefer the new bundle to the original bundle. This is a simple proof that strong monotonicity implies local non-satiation. If bundle A is preferred to bundle B due to monotonicity, then any bundle with a slightly higher quantity of any good in bundle A will also be preferred over B.
However, the reverse is not true. Local non-satiation does not imply strong monotonicity. Local non-satiation requires that the consumer prefers any bundle with slightly more of any good to a bundle with slightly less of any good. But this condition does not imply the monotonicity condition. For example, consider a preference relation such that the consumer prefers A to B and B to C, but prefers D to A.
This preference relation satisfies local non-satiation but not strong monotonicity because bundle D contains less of each good than A, but is preferred over A. Hence, strong monotonicity implies local non-satiation, but not vice versa.
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what is chemical energy help I'm really dumb
Answers
Answer: Chemical energy is the energy stored in bonds that is released when chemical reactions occur.
During times of dire emergency, people have been known to lift tremendous weights, such as the rear of a car to free someone trapped underneath. Is greater power necessary to perform such feats versus lifting the same car using a jack?
Explain
Answers
Answer:
Yes, greater power is necessary to lift a car with your own body in a dire emergency situation than it would be to lift the same car using a jack.
Explanation:
This is because lifting the car with your body requires a combination of strength, power, and speed, all of which must be generated by your muscles. In contrast, a jack is a tool that uses hydraulic pressure to lift the car, which requires much less effort on your part.
When lifting a car with your body, you are essentially performing a squat or deadlift with an extremely heavy weight. This requires your muscles to produce a tremendous amount of force to overcome the weight of the car and gravity, as well as to generate the speed and power necessary to lift the car quickly and effectively.
In addition, lifting a car with your body requires you to use multiple muscle groups simultaneously, including your legs, back, arms, and core. This makes it a very taxing exercise that can quickly fatigue your muscles and potentially lead to injury if not performed correctly.
In contrast, using a jack to lift a car requires minimal effort on your part, as the hydraulic pressure does the majority of the work. This means that you do not need to generate as much force, speed, or power with your muscles, and can avoid the risk of injury or fatigue associated with lifting the car with your body.
Overall, lifting a car with your body is a remarkable feat that requires a tremendous amount of strength, power, and speed. While it can be done in dire emergency situations, it should not be attempted unless absolutely necessary, and only by individuals who are properly trained and physically capable of performing the lift safely.
Satellite A has a mass of 1. 5x10^3 kilograms and is traveling east at 8. 0x10^3 meters per second. Satellite B is traveling west at 6. 0x10^3 meters per second. The satellites collide head-on and come to rest. What is the mass of satellite B?
Answers
The mass of satellite B is equal to 2 X 10³ Kg.
Mass of satellite A = m = 1.5 X 10³ Kg
Mass of satellite B = m'
Velocity of satellite A = v = 8 X 10³ m/s
Velocity of satellite B = v' = 6 X 10³ m/s
To find mass of satellite B = m' =
Using the theorem of conservation of linear momentum we get,
= momentum of satellites initially = momentum of satellites finally
= mv + m'v' = m(0) + m'(0)
= mv + m'(-v') = 0
= mv = + (m'v')
= 1.5 X 10³ X 8 X 10³ = m' X 6 X 10³
= m' = ( 1.5 X 10³ X 8 X 10³ ) / 6 X 10³
= m' = 2000 Kg
Thus, mass of satellite B is 2 X 10³ Kg.
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The chemical formula for an ionic compound made of potassium and chlorine is KCI. What is its chemical name?
O potassium oxide
O potassium chlorine
O potassium chloride
O potassium anion
Answers
KCL stands for Potassium Chloride
K-PotassiumCl-ChlorideMelting and Boiling points of few ionic compounds:-
\(\boxed{\begin{array}{|c|c|c|c|} \cline {1-4}\Large\sf {Ionic\:Compounds} & \sf \Large {Chemical\:Formula} & \Large \sf{Melting\:point_{(k)}} & \Large\sf {Boiling\:point_{(k)}} \\ &&& \\ \cline {1-4} \sf Sodium\:Chloride & \sf NaCl & 1074 & 1686 \\ &&& \\ \cline {1-4} \sf Lithium\:Chloride & \sf \sf LiCl & 887 & 1600 \\ &&& \\ \cline {1-4} \sf Calcium\:Chloride & \sf CaCl_2 & 1045 & 1900 \\ &&& \\ \cline {1-4} \sf Calcium\:Oxide & \sf CaO & 2850 & 3120 \\ &&& \\ \cline {1-4} \sf Magnesium\:Chloride & \sf MgCl_2 & 981 & 1685 \\ &&& \\ \cline {1-4} \end{array}}\)
Answer:
potassium chloride
Explanation:
K-potassium
Cl-chloride ion
Starting from rest, an object accelerates on a straight level surface at the rate of 2 m/s for 10 s. 9. What is the speed of the object at the end of 10 s? (A)5 m/s (B) 10 m/s (C) 20 m/s (D) 30 m/s (E) 40 m/s
Answers
Answer:
C
Explanation:
a = v-u / t
a×t = v (u= 0 therefore is ignored)
2m/s² × 10s = v
v= 20m/s
1. A student is biking to school. She travels 0.7 km north, then realizes something has fallen out of her bag.
She travels 0.3 km south to retrieve her item. She then travels 0.4 mi north to arrive at school. The journey
takes her 15 min.
a. What is her total displacement?
b. What is her average velocity?
Answers
Explanation:
(a) Displacement of an object is the shortest path covered by it.
In this problem, a student is biking to school. She travels 0.7 km north, then realizes something has fallen out of her bag. She travels 0.3 km south to retrieve her item. She then travels 0.4 mi north to arrive at school.
0.4 miles = 0.64 km
displacement = 0.7-0.3+0.64 = 1.04 km
(b) Average velocity = total displacement/total time
t = 15 min = 0.25 hour
\(v=\dfrac{1.04\ km}{0.25\ h}\\\\v=4.16\ km/h\)
Hence, this is the required solution.
The overflow of crude oil from its container when the heat wave reaches the water level in the tank. The water flashes to steam causing a violent expulsion of the material as froth. called
Answers
The overflow of crude oil from its container when the heat wave reaches the water level in the tank. The water flashes to steam causing a violent expulsion of the material as froth is called Vapor Pressure Explosion.
A Vapor Pressure Explosion is a hazardous situation that occurs when a liquid having high vapor pressure is heated or the pressure is reduced. In these conditions, the fluid transforms from a liquid to a vapor, generating a tremendous force. The vapor pressure inside the container, for example, might rise to several times the container's standard atmospheric pressure. The vapor pressure exceeds the container's strength, causing it to rupture and release its contents. The material is ejected, sprayed, or forced out with significant force and power.
The phenomenon of crude oil overflowing from its container when a heat wave reaches the water level in the tank, causing the water to flash to steam and result in a violent expulsion of the material as froth, is called a "boilover".
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blood is tissue .how?
Answers
Answer:
Blood is both a tissue and a fluid. It is a tissue because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid
Which one of the following properties most fundamentally distinguishes mechanical waves from electromagnetic waves?A)Mechanical waves have crests and troughs. B)Mechanical waves require a medium for propagation. C) Mechanical waves have well-defined wavelengths. D)Mechanical waves move at a finite speed
Answers
'Mechanical waves require a medium for propagation' is the statement which most fundamentally distinguishes mechanical waves from electromagnetic waves. Correct option is B.
A wave's height (amplitude), frequency, and length are all ways to describe it. Any wave can be thought of as an energy-transferring disturbance.
Compared to mechanical waves, electromagnetic waves are different. The electromagnetic waves can move in vacuums since they have the ability, but sound waves and water cannot, so they require a medium to spread.
Electric and magnetic fields oscillate along with electromagnetic waves in a manner that is perpendicular to the direction of propagation.
Thus, mechanical waves require a medium for propagation.
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how long will it take a 5oW heater to melt 2KG of ice at 0 degrees Celcius.
Specific latent heat of fuison of ice = 335000J/KG
Answers
The time it takes the heater of 50 W to melt the is 13400 seconds.
What is time?Time is the measured or measurable period during which an action, process, or condition exists or continues :
To calculate the time it will take the heater to melt the ice, we use the formula below.
Formula:
t = mC/P.......... Equation 1Where:
t = Time m = Mass of the iceC = Specific latent heat of fusion of the iceP = Power of the heaterFrom the question,
Given:
m = 2 kgC = 335000 J/kgP = 50 WSubstitute these values into equation 1
t = (2×335000)/50t = 13400 seconds.Hence, the time it takes the ice to melt is 13400 seconds.
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7.There is no gain in mechanical advantage in a single fixed pulley. En
why the pulley is then used.
Answers
Answer:
The answer to this question can be defined as follows:
Explanation:
Advantage:
The load can be raised with one fixed pulley by adjusting the shifting pressure path. Its a fixed input pulley doesn't even have a mechanical advantage, the movement is larger than for the load. It is preferable to use because the pulley must not be moved up or down. It gains the measurement of just an increase in output power-to-input force ratio.A structural engineer is using this table to design a wall to protect a city near the ocean. How high should the engineer build the wall? 50 meters 100 meters 150 meters 200 meters.
Answers
The height of the wall to protect from the ocean will be 200 meters
What will be the height of the wall?
A structural engineer is using this table to design a wall to protect a city near the ocean the height of the wall will be 200 meters.
It is given in the graph that from 2009 to 2011 the highest peak of the ocean waves reached the height between 150 to 200 meters.
So the structural engineer should consider the data given in the graph that is more than the highest peak given in the graph so the height of the wall will be 200 meters
Thus the height of the wall to protect from the ocean will be 200 meters
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Which types of rocks (igneou, sedimentary, metamorphic) tend to have crystalline textures? How does this texture form?
Answers
Answer:
metamorpic rock
Explanation:
it has a crystallin textures
Why must you emove magnet slowly from alternating current
Answers
Alternating current changes the orientation of the electromagnetic field by rapidly switching directions, helps to demagnetization.
What is the process of Demagnetization by AC current?Alternating current changes the orientation of the electromagnetic field by rapidly switching directions.
Because providing an electrical field (electromagnet) is one technique to create a magnet, it stands to reason that you can use alternating current to remove magnetism as well.
To do this, an alternating current (AC) current is sent through a solenoid. Begin with a greater current and gradually lower it until it is zero.
The magnetic dipoles strive to position themselves according to the field, but because it changes, they become randomized. Due to hysteresis, the material's core may retain a modest magnetic field.
Hence, alternating current changes the orientation of the electromagnetic field by rapidly switching directions, helps to demagnetization.
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Only refer from the community conservation article please. Will mark brainliest!!!!
1. Summarize the scientific information that leads to conservation in each of the articles.
2. What social issues affected the problem or its solution in each of the stories?
3. How did economics delay scientists' first attempts for conservation in each story?
4. Describe the political actions that led to successful conservation in both stories.
Answers
the political actions that led to success conversation in the forest industry is What they call is a FC company that makes the forest industry true they make it out of a factory it can make it very successful and accomplished.
Trees are being felled at an alarming rate by people. Forests are home to numerous animals and people, and by removing trees from them, we are destroying their habitat and depriving them of a safe haven.
What is community conservation?Community conservation refers to a strategy for protecting the environment that acknowledges local residents' rights to manage wildlife or gain both direct and indirect benefits from it.
The gorillas' habitat, the forest, is being destroyed by humans. Additionally, people are harming these creatures, and if this continues, gorillas may become extinct.
There won't be as many resources from trees, like paper, if people cut down less of them, therefore prices could rise.
Prices for tourists will increase if fewer gorillas are still alive. That won't benefit visitors since they will have to pay more, and since some individuals don't have a lot of money, there will be fewer visitors.
Thus, this way, community conservation is mandatory.
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A balloon is partially inflated and sealed. A number of weights are attached to the balloon such that it is neutrally buoyant when submerged at a certain depth in a beaker of water. Describe the motion of the balloon, if you push the balloon down to a greater depth and release it. Explain.
Answers
This motion of the balloon is an example of buoyancy, which is the upward force exerted by a fluid on an object immersed in it.
Example of buoyancy motionWhen the balloon is neutrally buoyant, it means that the weight of the balloon and the weights attached to it is equal to the weight of the water displaced by the balloon.
If you push the balloon down to a greater depth and then release it, the balloon will rise back up to its original position.
This is because the balloon is still partially inflated and contains air, which is less dense than water. When you push the balloon down, the water pressure compresses the air in the balloon, causing it to become smaller in size.
When you release the balloon, the compressed air expands and pushes the balloon upwards towards the surface of the water.
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what energy source would be the most cost efficient and have the smallest impact on the climate? evidence?
Answers
Answer: Solar energy and wind energy both can be used
Explanation: Solar energy as well as wind energy would be the most preferable energy source for this community.
Solar energy is the energy that is directly derived from the sun and can be transformed into electrical energy. For example, the use of solar panels.
Wind energy is obtained by the natural agent known as wind. In the region where the wind is high, the turbines moves very fast, thereby generating electricity. For example, wind mill.
Thus this two energy sources are less costly and have lesser environmental impacts and they are very precise and is currently rising in the faster rate and with innovative technical upgradation.