When a body is entirely or partially submerged in a liquid, the resultant pressure force acting on the body is known as the buoyant force.
When a surface is immersed in a fluid, the pressure force that results on the body operates in all directions perpendicular to the surface. We refer to this as hydrostatic pressure. The density of the fluid and the depth of the point below the surface of the fluid both directly affect the pressure at a given place in the fluid, which is the same in all directions. The pressure also rises as the depth does buoyant force. Any point in a fluid experiences pressure in all directions, making it a scalar quantity.
The weight of the fluid above the point of interest determines this pressure, which is described as the force applied per unit area. It is referred to be an isotropic quality of fluid when the pressure at a particular place in the fluid is the same in all directions.
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how to calculate direction by looking at a diagram?
Answer:
To calculate the direction of the vector v⃗ = (x, y) , use the formula θ = arctan(y/x) , where θ is the smallest angle the vector forms with the horizontal axis, and x and y are the components of the resultant vector.
Hi could someone help me answer these questions from my worksheet, thanks!
2. The field representation of a positive charge would not be a good representation of the gravitational field around one mass because the electric force between charged particles is an electromagnetic force that behaves differently from the gravitational force between masses.
3. The field around two positive charges would not be a good representation of the gravitational field around two masses because the direction of the electric force between two charges is dependent on their relative positions and charges, whereas the direction of the gravitational force between two masses is always attractive and points toward the center of mass.
4, A good analogy for the process of work being done and electric potential energy being stored when positive and negative charges are moved farther apart would be the process of lifting a heavy object because work must be done to lift a heavy object and store gravitational potential energy, work must be done to separate positive and negative charges and store electric potential energy.
5. The gravitational force is the dominant force we notice in our everyday interactions and at planetary or larger scales because it depends only on the mass of the objects, which is typically much larger than their charge.
What is the difference between gravitational force and electric force?The gravitational force between two masses is proportional to the product of their masses and inversely proportional to the square of the distance between them, while the electric force between two charges is proportional to the product of their charges and inversely proportional to the square of the distance between them.
Gravitational force is a long-range force that acts between all masses, while the electric force is a short-range force that acts only between charged particles.
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This is a GCE physics past paper question. Can someone please give answer and also give reasoning.
Answer:
60mV
Explanation:
But I'm not so sure, i tried
A person with a mass of 11.24 kg is accelerated to 9.15 m/s2. How much force was applied to him.
Answer:
102.846 Newtons
Explanation:
The equation relating mass, acceleration and force is
F = ma
where
F = force
m = mass
a = acceleration
Given
m = 11.24 kg
a = 9.15 m/s²
F = 11.24 kg x 9.15 m/s²
= 102.846 Newtons
how can the momentum of a speeding bullet be the same as the momentum of a supertanker moving toward a dock
Mass in motion is quantified by momentum, which is the measure of how much weight is moving. It typically has the sign math
What does motion mean in mathematics?
In mathematics, movement, distance, velocity, impulse, and speed are used to explain motion. By securing a reference point to the environment or the observer, a body's motion can be seen. A body's motion is quantified by tracking how its location changes in relation to the perspective it occupies.
What types of motion may an object make?
The force acting on a body determines how it moves. These are some examples of various motion types. Translational: When an item goes along a route across all 3 components, it is of this type. Rotational: This sort of movement involves an object moving in a circular motion around a fixed axis.
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suppose that 18 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m?
The work which is needed to stretch the spring from 12 m to 14 m is 56J if 18 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m.
Given the amount of work done (W) = 18J
The initial length of spring (L1) = 6m
The length of spring after stretching (L2) = 9m
The elongation of spring (x) = L2 - L1 = 9 - 6 = 3m
We know that work done on a spring is equal to force multiplied by the spring elongation such that W = Fx where F = 1/2kx ; k is spring constant
18 = 1/2 * k * x^2
k = 36/9 = 4
Given the original length of spring = 12m
The length of spring after stretching = 14m
stretching length from 6m to 12m is 6m
stretching length from 6m to 14m is 8m
The elongation in spring = (x')
Work done on the spring = 1/2k(x')^2 = 1/2 * 4 * (8^2 - 6^2) = 56J
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i ned help quick pleaseeee
The presidential elections in America take place every four years and Americans decide who will be the President for the next four years.
What is the procedure of elections in America?Every four years on Election Day, American citizens vote for a new president.
During the primary election, people in each political party (e.g. Democrat and Republican) vote for a candidate to represent their party. The candidates who win the primary election for their political party go on to the general election.
During the general election, there is a popular vote and an Electoral College vote. First, the citizens vote for who they want to be president in the popular vote. Then, during the Electoral College vote, the electors vote for the president based on who won the popular vote.
The popular vote is "one person, one vote" whereas the Electoral College vote is "winner takes all." That means, if a candidate wins the majority of votes in the popular vote, that candidate wins the Electoral College votes.
If no candidate wins the majority of the electoral votes, the House of Representatives chooses the president.
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Peregrine falcons are known for their maneuvering ability. In a tight circular turn, a falcon can attain a centripetal acceleration 1.5 times the free-fall acceleration. Part A What is the radius of the turn if the falcon is flying at 22 m/s ? Express your answer with the appropriate units. ol ?
As per the question the radius of the turn is approximately 33.25 meters.
What is centripetal acceleration?An object travelling in a circular path will experience centripetal acceleration. It is always pointed in the direction of the circle's center, hence the formula:
a = v^2 / r
where a denotes the centripetal acceleration, v the object's speed, and r the circle's radius. According to this formula, the centripetal acceleration rises with the object's speed and falls with the circle's radius.
According to question:
We can start by using the centripetal acceleration formula:
a = v^2/r
where a is the centripetal acceleration, v is the velocity, and r is the radius of the turn.
In this case, we know that the centripetal acceleration is 1.5 times the free-fall acceleration, which is approximately 9.8 m/s^2. Therefore:
a = 1.5 * 9.8 m/s^2 = 14.7 m/s^2
We also know that the velocity of the falcon is 22 m/s. Plugging these values into the formula above, we get:
14.7 m/s^2 = (22 m/s)^2 / r
Solving for r, we get:
r = (22 m/s)^2 / 14.7 m/s^2 ≈ 33.25 m
Therefore, the radius of the turn is approximately 33.25 meters.
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find strength of electric field formed by a 150.0 cm charged rod with linear charge density of 120 c at distance of 80.0 cm on central axis?
The strength of the electric field formed by the charged rod at a distance of 80.0 cm on its central axis is 1.35 x 10^12 N/C.
The electric field created by a charged rod at a point on its central axis can be calculated using the formula,
[tex]E = \dfrac{k \lambda}{r}[/tex]
where k is Coulomb's constant (k = 9.0 x 10^9 N m^2/C^2), lambda is the linear charge density of the rod in C/m, and r is the distance from the rod to the point where the electric field is being measured, also in meters.
Substituting the given values,
[tex]E = \dfrac{9.0 \times 10^9 \times 120}{0.8}[/tex]
E = 1.35 x 10^12 N/C
Therefore, the strength of the electric field formed by the charged rod at a distance of 80.0 cm on its central axis is 1.35 x 10^12 N/C.
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Define Resonance Physics
Answer:
Resonance is a phenomenon that occurs when the frequency at which an external force is applied to an object is equal to the natural frequency of vibration of that object.
In physics, resonance is a common occurrence in mechanical, electrical, and acoustical systems.
1. a charge of -2.50 nc and a charge of -4.00 nc are placed 50.00 mm apart. find the resultant force on a charge of 8.00 nc placed 20.00 mm from the -2.50 nc charge and 30.00 mm from the -2.50 nc charge.
The resultant force on the 8.00 nC charge is -0.010 N.
Using Coulomb's law, the electric force between two point charges is given by,
F = k * (q1 * q2) / r^2
where F is the force, k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between the charges.
The force on the 8.00 nC charge due to the -2.50 nC charge:
F1 = k * ((8.00 nC) * (-2.50 nC)) / (0.020 m)^2
= -0.090 N
Note that the negative sign indicates an attractive force, as the charges have opposite signs.
The force on the 8.00 nC charge due to the -4.00 nC charge,
F2 = k * ((8.00 nC) * (-4.00 nC)) / (0.030 m)^2
= -0.080 N
Add these forces vectorially. Since the forces are acting in opposite directions,
Fnet = F1 - F2
= -0.090 N - (-0.080 N)
= -0.010 N
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a capacitor is connected to a battery as shown above. the plates of the capacitor are pulled apart using insulating handles while the capacitor remains connected to the battery. will the capacitance and energy stored in the capacitor increase, decrease, or remain the same?
If the plates of a capacitor are pulled apart using insulating handles while the capacitor remains connected to the battery, the distance between the plates will increase. This will result in a decrease in the capacitance of the capacitor.
The capacitance of a capacitor is directly proportional to the area of the plates and inversely proportional to the distance between the plates. When the plates are pulled apart, the distance between them increases, so the capacitance decreases.
However, the energy stored in the capacitor is given by the formula: E = (1/2)CV^2, where C is the capacitance of the capacitor and V is the voltage across the capacitor. Since the battery is still connected, the voltage across the capacitor remains constant. Therefore, the energy stored in the capacitor will decrease as the capacitance decreases.
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why do we need to follow the suggested activities given in the philippines physical activity guided (PPAP)
The PPAG recommends a variety of physical activities, such as aerobic exercises, muscle-strengthening exercises, and flexibility exercises. It also includes recommendations for the frequency, intensity, and duration of physical activity for various age groups and skill levels.
Individuals can ensure that they are getting the right amount and type of physical activity for their health and well-being by following these guidelines.
The Philippines Physical Activity Guidelines (PPAG) provide evidence-based physical activity recommendations to improve health and well-being. Following the PPAG's suggested activities can provide numerous benefits, including:
Improving overall health: Physical activity is linked to a lower risk of chronic diseases like heart disease, stroke, diabetes, and certain types of cancer. It can also aid in the management of chronic conditions like high blood pressure, high cholesterol, and obesity.
Physical activity has been shown to reduce symptoms of depression and anxiety, as well as improve overall mood and emotional well-being.
Improving physical function: Regular physical activity can help improve strength, flexibility, balance, and coordination, lowering the risk of falls and improving overall physical function.
Physical activity is an important component of a healthy weight management plan because it helps burn calories and maintain muscle mass.
Increasing social connections: Physical activities can provide opportunities to connect with others and build social support networks.
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how much work does the electric field do in moving a proton from a point with a potential of 195 v to a point where it is -35 v ?
The work done by the electric field in moving the proton from a point with a potential of 195 V to a point where it is -35 V is approximately 6.24 x 10^-17 J.
The work done by the electric field in moving a charge q from a point with a potential V1 to a point with a potential V2 is given by:
W = q(V2 - V1)
In this case, the charge q is a proton, which has a charge of +1.60 x 10^-19 C. The potential difference between the two points is:
V2 - V1 = (-35 V) - (195 V) = -230 V
Substituting these values into the equation above, we get:
W = (1.60 x 10^-19 C)(-230 V - 195 V) = -6.24 x 10^-17 J
The negative sign indicates that the electric field does work on the proton, which loses energy as it moves from the point with higher potential to the point with lower potential.
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A motorcycle traveling at 87.3 mi/hr for 0.85
hours, what is the acceleration if the final-
velocity is 120 mi/hr?
A motorcycle traveling at 87.3 mi/hr for 0.85 hours, the acceleration of the motorcycle is 38.47 miles per hour squared (mi/[tex]hr^2[/tex]) if the final- velocity of a motorcycle is 120 mi/hr.
What is the calculation of the acceleration?The acceleration of the motorcycle= (final velocity - initial velocity) / time
(initial velocity=at the beginning of the time interval, final velocity= velocity at the end of the time interval, time= the duration of the interval)
Here, initial velocity =87.3 mi/hr, the final velocity = 120 mi/hr, and the time interval = 0.85 hours.
acceleration = (120 mi/hr - 87.3 mi/hr) / 0.85 hours
acceleration = 32.7 mi/hr / 0.85 hours
acceleration = 38.47 mi/[tex]hr^2[/tex]
Hence, the acceleration of the motorcycle is 38.47 miles per hour squared (mi/[tex]hr^2[/tex]) if the final velocity is 120 mi/hr.
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an object whose center of gravity is above its base of support will be unstable if a vertical line projected downward from the center of gravity falls outside of the base of support. true false
An object whose center of gravity is above its base of support will be unstable if a vertical line projected downward from the center of gravity falls outside of the base of support. This statement is true.
The center of gravity of an object is the point at which its weight can be considered to act. If the center of gravity is above the base of support, the object will tend to tip over or fall if the vertical line projected downward from the center of gravity falls outside of the base of support.
If the base of support is not wide enough to counteract this torque, the object will become unstable and tip over.
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Can someone help me with this ?
The first image shows a speed - time relation in which the speed is zero and the the object is not moving. The second graph shows a constant velocity and the third one shows an increasing velocity with time.
What is speed - time graph ?A speed - time graph represents the change in speed of an object with respect to the time. The speed can be increasing with time or decreasing. Speed of an object is dependent on the path through which it is moving and the mass, frictional force etc.
Here, the first image shows no no values for the y - axis and and thus, the image is not moving. The second graph shows a parallel line which is showing there is no change in speed with the time. This indicates that the object is moving with a constant speed.
The graph C plots an increasing speed with respect to time. The straight line diagonal to the x, y axis indicates the increasing speed.
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A beam of light strikes a mirror at an angle of 45 degrees. What shape is formed by the beam of light?
A. Any motion into directions such as up and down
B. The letter v
C. A straight line
D. The letter U
PLEASE ANSWER ASAPPPP
A mirror receives a light beam at a 45 degree angle. The light beam takes the form of a straight line. As a result, choice (C) is accurate.
When a beam of light strikes a mirror at an angle, the reflected beam follows the law of reflection, which states that the angle of reflection is equal to the angle of incidence, and both angles are measured with respect to the normal (a line perpendicular to the surface of the mirror) at the point of incidence.
In this case, since the beam of light strikes the mirror at an angle of 45 degrees, the angle of reflection is also 45 degrees, as shown in the diagram below:-
/|
/ |
/ |
/ |
/________| <--- Mirror surface
| /
| /
| /
| /
As a result of the law of reflection, the reflected beam of light will form a symmetrical angle with the incident beam, as shown in the diagram below:-
/|
/ |
/ |
/ |
| /
| /
| /
|/
This reflected beam will continue to travel in a straight line away from the mirror, and will not change shape. Therefore, the correct answer is option C: "A straight line".
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if the cross-sectional area of the venture tube is 2 times larger at point a than it is at point b .what the air speed at point b is? (25.6 m/s)
If the cross-sectional area of the venturi tube is 2 times larger at point a than it is at point b then according to the continuity equation, the airspeed at point B is 0 m/s.
we know that the cross-sectional area of the Venturi tube is 2 times larger at point A than it is at point B.
Therefore, we can infer that the airspeed at point B is higher than the airspeed at point A. To determine the airspeed at point B, we can use the continuity equation.
It states that the mass flow rate of a fluid through a tube is constant at all points along the tube. Mathematically, this can be expressed as:
A1V1 = A2V2
where A1 and V1 are the cross-sectional areas and airspeed, respectively, at point A, and A2 and V2 are the cross-sectional areas and airspeed, respectively, at point B.
We are given that the airspeed at point A is 0 m/s, and the cross-sectional area at point A is 2 times larger than at point B.
Let's denote the cross-sectional area at point B as A, so the cross-sectional area at point A is 2A. We are also given that the airspeed at point B is V2.
By using the continuity equation, we can write:
(2A)(0 m/s) = AV2
Simplifying this equation, we get:
V2 = 0 m/s / 2
V2 = 0 m/s
Therefore, according to the continuity equation, the airspeed at point B is 0 m/s.
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If a cloud passes in front of sirius and reduces the flux that reaches you by a factor of 3, how many times brighter than vega will it be?
Vega will be about 6.5 times brighter than Sirius after the cloud passes in front of it.
The flux received from a star is,
Flux = Luminosity / (4π × distance²)
According to the HYG Database, Sirius has a distance of about 8.6 light years from us, while Vega has a distance of about 25 light years.
Original flux received from Sirius as F(S), then the flux received after the cloud passes in front of it will be 1/3 F(S). To calculate the relative brightness of Vega compared to Sirius,
(d(Sirius) / d(Vega))² = F(Vega) / F(Sirius)
where d(Sirius) and d(Vega) are the distances between Sirius and Vega, respectively.
F(Vega) = F(Sirius) × (d(Vega) / d(Sirius))²
= (1/3 F(S)) × (25 / 8.6)²
≈ 6.5 × F(Sirius)
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An aluminum wing on a passenger jet is
25 m
long when its temperature is
19°C. At what temperature would the wing be 3 cm (0. 03 m) shorter?
The temperature at which the wing is 3 cm shorter than its initial length is 19°C - 54°C = -35°C.
Is 37 degrees Fahrenheit hot or cold?A normal temperature is between 36 and 37 degrees Celsius, though this varies depending on your age, what you've been doing, the time of day, and the method used to take the reading. Colds, the flu, and COVID-19 are examples of viral respiratory illnesses that can raise a person's temperature.
The thermal expansion coefficient of aluminum is approximately 22.2 × 10⁻⁶ per degree Celsius (or 22.2 × 10⁻⁶/°C).
The change in length of the wing, ΔL, is given by:
ΔL = α L ΔT
We know that the original length of the wing is 25 m, and the change in length is 3 cm, which is 0.03 m.
So, we have:
0.03 m = (22.2 × 10⁻⁶/°C) × (25 m) × ΔT
Solving for ΔT, we get:
ΔT = 0.03 m / ((22.2 × 10⁻⁶/°C) × (25 m))
ΔT ≈ 54°C
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The equation below expresses the proportional relationship between an object's kinetic energy, mass, and velocity.
Kinetic energy% x mass x velocity
How did your observations confirm this equation?
Answer: I do not know what your observations were, but objects with a higher mass and objects traveling at a faster velocity have a higher kinetic energy. The reverse is true of course for less KE.
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MM4343
at what angle above the horizontal should the ball be thrown so that the runner will catch it just before it hits the ground? express your answer in degrees.
at the velocity of 60 degree angle above the horizontal should the ball be thrown so that the runner will catch it just before it hits the ground
For the person to be able to catch the ball, the horizontal component of velocity of the ball should be same as the speed of the person, i.e.,
v 0 cosθ= 2v 0
or cosθ= 21
or θ=60 ∘ .
Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time.
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Uniform Electric Field Two conducting parallel plates are oppositely charged and separated by a certain distance. An electron is located midway between the plates. The magnitude of the electrostatic force on the electron is 3.8 × 10-16 newton. 1. On the diagram, draw at least three field lines to represent the direction of the electric field in the space between the charged plates. 2. Identify the direction of the electrostatic force that the electric field exerts on the electron.
The electrostatic force exerted on the electron will be in the direction of the electric field, which is from the positive plate to the negative plate. Since the electron is negatively charged, it will be attracted to the positively charged plate, so the force on the electron will be in the direction from the negative plate to the positive plate.
What is electrostatic force?The electrostatic force, also known as the Coulomb force, is the force that exists between electrically charged particles. It is a fundamental force of nature that governs the behavior of charged particles, such as electrons and protons.
How is electrostatic force important?The electrostatic force is responsible for many natural phenomena, such as the attraction and repulsion of magnets, the electric shock felt after rubbing a balloon on hair, and the behavior of lightning. It is also used in a wide range of technologies.
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it is specified that a certain nut be tightened to a torque of 41 n*m. if the mechanic is using a 81 cm wrench, how much force must he apply to the end of the wrench to meet specs?
To torque the nut to the required 41 N*m, the mechanic needs apply a force of 50.62 N to the end of the wrench.
Is 40 times more torque needed to remove a nut from a wheel?The amount of torque needed to remove a nut from a car's wheel is 40.0 Nm. In order to remove the nut, the technician must use a minimum force of 40.0 Nm at the end of a 50.0 cm wrench.
We can apply the following formula to resolve this issue:
Torque = Force x Distance
where Torque is given as 41 N*m, Distance is the length of the wrench (81 cm = 0.81 m), and we want to find the Force.
So, we can rearrange the formula to solve for Force:
Force = Torque / Distance
Substituting the given values, we get:
Force = 41 N*m / 0.81 m
Force = 50.62 N
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EXPERIMENT: POLAR PROPERTIES
Perform the directions and Answer the following questions ….
These supplies are needed:
acetate (overhead transparency material) strip and tissue paper
vinyl strip and woolen cloth
slow, steady stream of water from a faucet
Follow these directions and answer these questions.
1. Rub the acetate strip with the tissue paper.
2. Bring the strip near a slow stream of running water.
What happened when the strip was brought near the stream?
From your ideas about charges on acetate and vinyl strips, predict what will happen if a charged vinyl strip is brought near the slow stream of water. (Review Unit 4.)
3. Test your hypothesis. Rub a vinyl strip with a woolen cloth.
4. Bring the charged strip near a slow stream of water.
HELP ASAP I NEED LEGIT ANSWERS:)
Charge is a fundamental physical property of matter that describes the degree to which it interacts with electromagnetic fields. It is an intrinsic property of subatomic particles, such as protons and electrons, that gives rise to electric and magnetic forces.
What is Charge?The basic unit of charge is the Coulomb (C), named after the French physicist Charles-Augustin de Coulomb, who first quantified the electric force between charged objects. A single proton or electron has a charge of approximately 1.6 x 10⁻¹⁹ Coulombs.
Rubbing the acetate strip with tissue paper transfers electrons from the tissue paper to the strip, giving the strip a negative charge.
When the negatively charged acetate strip is brought near a slow stream of running water, the water is attracted to the strip and bends towards it. This is because the water is polar, meaning it has a positive end and a negative end, and the negative end is attracted to the negatively charged acetate strip.
Predicted: When a charged vinyl strip is brought near the slow stream of water, the water should be attracted to the strip and bend towards it. This is because the vinyl strip is typically charged positively when rubbed with woolen cloth, so it will attract the negative end of the polar water molecules.
Rubbing the vinyl strip with a woolen cloth transfers electrons from the woolen cloth to the strip, giving it a positive charge. When the positively charged vinyl strip is brought near the slow stream of water, the water is indeed attracted to the strip and bends towards it, just as predicted.
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what is the electric field strength inside the hole at radial distance r
The electric field is given by the formula e for the sphere + e for the cylinder, which is equal to negative row r over 3 б+ ρr over 2 б + ρr / s.
We prefer to find the strength of our electric field at r because distances are less than a. If an is less than a, we can think of our length cylinder as being coaxial with a galcene cylinder of radius r. Now, let's say that our cylinders resemble this. The charge contained within the cylinder is then equal to either row times v or row pi r, squared times l. Gauss law can then be used to calculate our electric field.
Since e da da is equal to q, enclosed divided by epsilon naught, e times integral of da is equal to q, enclosed divided by epsilon naught, so e times 2 π r l = rho π r, squared l divided by Epsilon naught, so e is equal to row r divided by 2 б. Since the average cylinder is positively charged, this Let's now think about a galcene sphere with radius r. This calcium sphere has a charge that is negative row times 4/3πr³.
Let's now determine the electric field at a place that is e times away from the centre. Negative row 4/3πr³/б (epsilon) = 4πr². As a result, some of these components of our electric field—which is negative, pi negative row, and r divided by 3 epsilon—are also present inside the hole. So, we do. The electric field is given by the formula e for the sphere + e for the cylinder, which is equal to negative row r over 3 epsilon plus row r over 2 epsilon plus row r divided by s.
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if speed of particle triples by what factor does it kinetic energy increase
If speed of particle triples, the kinetic energy will be times six (6).
What is the relationship between kinetic energy and speed?Kinetic energy is the energy possessed by an object because of its motion, equal (nonrelativistically) to one half the mass of the body times the square of its speed.
The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.
This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.
Therefore, an object with triple speed will have times six kinetic energy.
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Consider the circuit in the diagram below.
The switch at the top is moved to the closed or on position, the lightbulb glows brightly for a moment, and then dims gradually until it is fully dark. The switch on the top leg is then moved to the open or off position. The switch on the central leg is then moved to the closed or on position. What would happen to the bulb.
The light bulb would light up and stay constant.
The light bulb would light up and gradually dim.
The light bulb would gradually brighten.
The light bulb would flash on and then immediately shut off.
Answer:
The light bulb would flash on and then immediately shut off.
Explanation:
How much energy is released if 278 kg of aluminum cools from 698 K to 298 K?
Answer:
Explanation:
Q=278*126.85*900=31,737,870J
