A 500 g block of metal absorbs 5016 J of heat when its temperature changes from 20.0°C to 30.0°C. Calculate the specific heat of the metal.

Answer:

50 N ---->

Explanation:

Opposing sides get subtracted so~

25-25 cancels out to zero so there is 0N

100 -50 equals 50 N ->

Along vertical direction, net force is 0N and along horizontal direction, the net force is 50N directed towards right.

To determine the answer, we need to know about how to calculate the net force.

To determine the net force along any direction, we have to sum all the forces that are directed along that direction.

Forces that directed along vertical direction are

Net force = 25 N (vertically upward) + 25 N (vertically downward)

                = 25 N - 25N = 0N

Here, we take '+ sign' for upward direction and '- sign' for downward direction.

Forces that directed along horizontal direction are

Net force= 100 N towards right + 50 N towards left

               = 100N - 50N

               = 50 N (towards right)

Here, we take '+ sign' for horizontally right direction and '- sign' for horizontally left direction.

Thus, we can conclude that 0 N is the net force along vertical direction and 50 N is the net force along horizontal direction.

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Since the force is perpendicular to the displacement of the ball, the total work done by the force is 50 Nm.

Given the following data:

To find the total work done by the force:

The work done by an object is the product of the perpendicular force acting on the object and the distance it covers.

Mathematically, work done is given by the formula:

\(Work\;done = Force\) × \(distance\)

Substituting the given parameters into the formula, we have;

\(Work\;done = 10\) × \(5\)

Work done = 50 Nm.

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Answer: becuase----Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. ... It also has a high boiling point which makes it very suitable to measure higher temperatures. Also, it has a shiny appearance and doesn't stick to the glass surface of glass.

Explanation: hope i helped c:

The balloon accelerates at a rate of 1.38 m/s2, and the bucket experiences a force of gravity of 9.8 m/s. In mechanics, acceleration is the rate at which an object's velocity with respect to time changes.

The vector quantity of accelerations (in that they have magnitude and direction). The direction of the net force imposed on an object determines its acceleration in relation to that force. A force in physics is an effect that has the power to alter an object's motion. A force can cause an object with mass to change its velocity, or accelerate (for example, moving from a condition of rest). Intuitively, a push or a pull can also be used to describe force.

F = MA = F/MA = 12000 + 500 /9000

a = 1.38m/s^2

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Answer:

srarch from website please

Answer:

Explanation:

Using the equation of motion v² = u²+2as

v is the final velocity = 40m/s

u is the iniyail velocity 0m/s

a is the acceleration

s is the displacement

Substituting in the formula;

40² = 0²+2a(50)

1600 = 100a

Divide both sides by 100

100a/100 = 1600/100

a = 16

Hence the car acceleration is 16m/s²

Answer: The noise pollution is the undesirable sound which can be harmful for humans or animals.

Explanation:

The high intensity of sound waves can harm the hearing ability of humans and animas. These can increase the blood pressure and produce stress in the brain. These can cause hypertension due to increase in heart rhythm. The noise pollution can be created by loud sounds from the concerts, sounds of machines in the factories, loud noise of train, car horn, and others. Such environmental sounds can be minimized by using glass panes which prevent the entry of external sounds in the house or building and use of thick curtains can also help. Covering the gaps or holes with cement which could allow the entry of sound.

Over the course of 30 meters, a car accelerates steadily from zero to 25 m/s. the acceleration is 10.41 m/s^2, in this case.

A is the ideal answer. True Continually traveling in a straight line, an automobile is going at a speed of 30 m/s. The automobile is moving with zero acceleration.

The formula a = v/t denotes acceleration (a), which is the product of the change in velocity (v) and the change in time (t). Using meters per second squared (m/s2), you can gauge how quickly velocity varies.

v = 25 m/s, u = 0 m/s, s = 30 meter

So,

v^2 = u^2 + 2as

(25)^2 = (0)^2 + 2a(30)

a = 625/60

a = 10.41 m/s^2

Thus, the acceleration is 10.41 m/s^2.

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The astronomical knowledge of ancient cultures played a significant role in laying the foundation for modern astronomy. These cultures observed the celestial bodies and made important discoveries, such as the regular movements of the stars and planets.

One of the notable contributions of ancient cultures to astronomy was the division of the sky into groups of stars, each of which was called a constellation.
The ancient Greeks were the first to systematically divide the sky into constellations around 400 BCE. The 48 constellations they identified were based on mythological stories and figures, such as Orion, Ursa Major, and Leo. Over time, other cultures around the world also developed their own systems of constellations, including the Chinese, Babylonians, and Native Americans.
The identification and naming of constellations allowed for easier navigation and the tracking of celestial events, such as the movement of planets and comets. This knowledge was crucial in developing calendars and predicting astronomical phenomena, such as eclipses.
Today, modern astronomers continue to use constellations as a way of organizing and studying the sky. However, our understanding of the universe has expanded significantly, with advancements in technology and scientific inquiry. Nonetheless, the foundation laid by ancient cultures in developing the concept of constellations remains a significant contribution to astronomy.

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Answer:

full moon is the answer to question

Answer:

Explanation:

What is a free body diagram?

Answer: a force diagram is a graphical illustration used to visualize the applied forces and resulting reactions on a body in a given condition

Drawing a free-body diagram for this problem

Answer: Look at the attached picture, ask me any questions if you are still confused. It is a little messy since I didn't have my pen.

Find its weight on Earth

Answer: The weight is dependent on the mass of the object and the gravitational constant on the planet. The gravitational constant, in this case, is 9.8.

   so the weight = mass * gravitational constant = m * g = 1000 * 9.8

                          = 9800 N

Hope that helps!

The answer is order processing.

Amethod for putting information into a standardized format that may be transferred easily between various computer systems.

What is processing?

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The energy transferred as heat for a reversible isothermal expansion of an ideal gas at 132∘ C is 18,630 J.

We can use the relationship between heat, temperature, and entropy for an ideal gas undergoing a reversible process:

ΔS = Qrev/T

where ΔS is the change in entropy, Qrev is the heat transferred in a reversible process, and T is the temperature in Kelvin.

We can rearrange this equation to solve for Qrev:

Qrev = ΔS x T

Now we can plug in the given values:

ΔS = 46.0 J/K (given)

T = 132 + 273 = 405 K (since the temperature is given in Celsius, we add 273 to convert to Kelvin)

Qrev = 46.0 J/K x 405 K

Qrev = 18,630 J

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A). Celestial bodies can indeed be classified based on their sizes, and in this case, planets are generally smaller compared to the other options provided.

A red supergiant star and a red giant star are both types of stars that are significantly larger than planets. Red supergiants, for example, are among the largest known stars in the universe. Stars, in general, are typically larger than planets, as they are massive celestial objects composed of plasma that undergo nuclear fusion.

While some planets might be similar in size or even larger than some smaller stars, it is important to note that the other choices listed are specific types of stars known for their relatively large size.  

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The rotation axis with the smallest moment of inertia is axis B.

To determine the rotation axis with the smallest moment of inertia, we need to consider the distribution of mass and the distances from each axis to the masses.

Given that the masses of the balls are 3M and M, and they are connected by a massless rod, the center of mass of the system will be located closer to the ball with larger mass, which is the ball of mass 3M.

Since the center of mass is closer to the 3M ball, the rotation axis that passes through the center of mass will have the smallest moment of inertia. This rotation axis is axis B, which is located at the center of mass of the system.

Axis A is located at x = 0, which is the position of the 3M ball, but it is not at the center of mass.

Axis C is located at x = L, which is the position of the M ball, but it is also not at the center of mass.

The rotation axis with the smallest moment of inertia is axis B, which passes through the center of mass of the system. Axis A and Axis C are not at the center of mass and therefore have larger moment of inertia compared to axis B.

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the change in direction of a wave passing from one medium to another caused by its change in speed this is from my study guide hope that helps

example: when you are sitting in a pool and ur leg looks deformed or even cut in half its caused my refraction.

After the collision, Q moves off with a speed of 2m/s in the original direction of P, therefore the initial velocity of P is 3 m/s.

The initial velocity is the velocity of an object at the beginning of its motion.

The initial velocity of ball P can be calculated using the conservation of momentum. Momentum is a vector quantity that is equal to the mass of an object multiplied by its velocity. It is conserved in collisions, meaning that the total momentum of all objects before the collision is equal to the total momentum of all objects after the collision.

The momentum of P before the collision is equal to the mass of P multiplied by its velocity (0.25 kg x vP). The momentum of Q before the collision is equal to the mass of Q multiplied by its velocity (0.25 kg x 0 m/s). The total momentum before the collision is therefore equal to 0.25 kg x vP.

After the collision, the momentum of P is equal to the mass of P multiplied by its velocity after the collision (0.25 kg x vP/3). The momentum of Q after the collision is equal to the mass of Q multiplied by its velocity after the collision (0.25 kg x 2 m/s). The total momentum after the collision is therefore equal to 0.50 kg x 2 m/s.

By equating the total momentum before and after the collision, we can calculate the initial velocity of P.

0.25 kg x vP = 0.50 kg x 2 m/s

vP = 8 m/s

Therefore, the initial velocity of ball P is 8 m/s./s

vP = 8 m/s

Therefore, the initial velocity of ball P is 8 m/s.

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It is because the effort distance is greater than the load distance

Explanation:

As we know, Effort×effort distance = load × load distance

So when effort distance is increases,

The effort decreases

So when the spanner’s handle is long

A tight knot can easily be opened by less effrot

I hope it helped

Answer:

gamma rays, ultraviolet, infrared, radio

Explanation:

Because on the Electromagnetic spectrum wavelength increases from the gamma end to radio end and frequency decrease in that order

Answer:

radio → infrared → ultraviolet → gamma

Explanation: yeaaahhh its c

To calculate the density of the metal, the person needs the length, width, height, and mass of the metal.

The density of a metal is defined as the mass of the metal per unit volume of metal. Therefore the density of the metal is given as, D= M/V, where 'M' is the mass of the metal and 'V' is the volume of the metal. Now the volume of the metal is obtained by the product of its length, width, and height. so, the volume of the metal is given as, V=l×b×h, where 'l' is the length of the metal block, 'b' is the width of the metal block, and 'h' is the height of the metal block. The person measures the mass and the length, width, and height of the block with rectangular sides. All these measurements are required to calculate the density of the metal block.

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push a water tube because if you pull the water may splash on you

Answer:

18.99u or 19u

Explanation:

Mass number=No of protons+No of neutrons

\(\\ \sf\longmapsto 9+10\)

\(\\ \sf\longmapsto 19u\)

\(\\ \sf\longmapsto 1s^22s^22p^5\)

Answer:

D. Refracted

Explanation:

At the point when light passes from a less thick to a more thick substance, (for instance passing from air into water), the light is refracted (or bowed) towards the ordinary. The bowing happens on the grounds that light voyages all the more gradually in a denser medium. The answer is D, refracted.

The equation that describes circular motion is given by: F_c = (m*v^2) / r

In uniform circular motion, centripetal force always points towards the center of the circle. The instantaneous velocity vector is located tangent to the circle at the point where the moving object is currently positioned.
The equation that describes circular motion is given by:
F_c = (m*v^2) / r
where F_c is the centripetal force, m is the mass of the object, v is the instantaneous velocity, and r is the radius of the circle.
Remember, the centripetal force is responsible for keeping the object in circular motion and always acts towards the center of the circle, while the instantaneous velocity vector indicates the direction and magnitude of the object's velocity at any given point along the circle.

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Answer: Force required to 25 joule work when the force causes a displacement of 0.5m is 50N

Explanation: To calculate the work done we use the formula

W=F.s                               (1)

W= work done

F=  force applied               s= displacement

Given, work done W= 25 joules= 25 J

displacement s= 0.5m

∴From equation (1) we get the force required when work is done and displacement is given, that is

F\(=\frac{W}{s}\)                                (2)

∴Force required \(F=\frac{W}{s}= \frac{25J}{0.5m}=50N\)            

(1 J is the work done by a force of 1 N acting over a displacement of 1 m and so 1 J= 1 Nm⇒ 1 N = 1 J/m)

ANS: Force required to do 25 J work when a force causes displacement of 0.5m = 50 N

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v_a = 178.74 m/s

using Bernoulli's theorem :-

P_a + ½ρ(v_a)² = P_b + ½ρ(v_b)²

Where;

P_a is pressure above wings

P_b is pressure below wings

v_a is speed above wings

v_b is speed below wings

ρ is density of air

We want to find V_a, so let's make V_a the subject;

v_a = √[(2(P_b - P_a)/ρ) + (v_b)²]

Now, we don't know (P_b - P_a)

(P_b - P_a) = Force/Area

(P_b - P_a) = mg/Area

We are given m = 2.5 × 10^(6) kg and area = 1600 m²

Thus, (P_b - P_a) = (2.5 × 10^(6) × 9.81)/1600 = 15328.125 N/m²

Density of air will be taken as 1.2 kg/m³

Thus;

v_a = √[(2(15328.125)/1.2) + (80)²]

v_a = √31946.875

v_a = 178.74 m/s.

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