A man supports himself and the uniform horizontal beam pulling the rope with a force T.The weights of men and the beam are 883 N and 245 N respectively.Calculate the tension T in the rope and the forces exerted by the pin at A.

Answer:

The increase in gravitational potential energy is the same in both cases

Explanation:

It is easier to climb a mountain in a zigzag way rather than climbing on a straight line but since the distance is the same ( vertical height ) , mass and gravity is the same. Hence the increase in gravitational potential energy is the same in both cases.

gravitational potential energy = mgh ( same in both cases )

m = mass

g = acceleration due to gravity

h = distance ( vertical height )

Explanation:

Hydraulic systems use the pump to push hydraulic fluid through the system to create fluid power. The fluid passes through the valves and flows to the cylinder where the hydraulic energy converts back into mechanical energy. The valves help to direct the flow of the liquid and relieve pressure when needed

Explanation:

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There are three types of electricity – baseload, dispatchable, and variable

Answer: F = 33.6 N

Explanation: work = force · distance or W = F·s

Force F = W/s = 504 J/15 m

Answer:

Gamma rays occupy the short-wavelength end of the spectrum; they can have wavelengths smaller than the nucleus of an atom. Visible light wavesare one-thousandths the width of human hair--about a million times longer than gamma rays. Radio waves, at the long-wavelength end of the spectrum, can be many meters long.

Answer:D "the frequency of gamma rays is greater."

Explanation:Trust

Answer: its motion  

Explanation: Potential energy is stored energy when an object is without motion, kinetic energy is the energy when a object is in motion.

Answer:

motion

Explanation:

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Answer:

electromagnet

Explanation:

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Answer:

1) four lines

2) three lines

3) fives lines

4) six lines

Answer:

4

Explanation:

Answer:

The potential energy is zero since the rock isn't moving.

Answer:

b

Explanation:

Answer:i think its the 3rd one

Explanation:

Answer:

El peso de la pieza dentro de la glicerina es 64.93 N.

Explanation:

El principio de Arquímedes nos indica que “todo cuerpo sumergido dentro de un fluido experimenta una fuerza ascendente llamada empuje, equivalente al peso del fluido desalojado por el cuerpo”.

Entonces, el peso del cuerpo dentro del fluido (peso aparente) será igual al peso real que tenía fuera de él (peso real) menos el peso del fluido que desplaza al sumergirse (peso del fluido o fuerza de empuje). Matemáticamente se expresa como:

Paparente=Preal−Pfluido

El peso del fluido desplazado o fuerza de empuje ejercida por el líquido está dada por la expresión:

Pfluido = ρliq • Vcpo • g

en donde:

Entonces, en este caso:

Paparente= 80 N - 1200 [tex]\frac{kg}{m^{3}}[/tex]* 0.001280 m³* 9.81 [tex]\frac{m}{cm^{2} }[/tex]

Resolviendo:

Paparente= 64.93 N

El peso de la pieza dentro de la glicerina es 64.93 N.

Answer:

They would all most likely have the same weight

Explanation:

Think about it the smaller the person or object the smaller the weight. But theyre all the same height now. And its not like you don't have any weight in the moon. So in conclusion they would all be the same weight

Answer:

1. a 2.c 3 b

Explanation:

Answer:

3=b 2=c 1=a

Explanation:

Answer:

74.88N

Explanation:

From the question,

F = ma................... Equation 1

Where F = force exerted on the ball, m = mass of the ball, a = acceleration

But,

v² = u²+2as.............. Equation 2

Where v = final velocity, u = initial velocity, s = distance.

Given: v = 12 m/s, u = 0 m/s (from rest), s = 5.0 m

Substitute into equation 2 and solve for a

12² = 0²+2×a×5

144 = 10a

10a = 144

a = 144/10

a = 14.4 m/s²

Also Given: m = 5.2 kg,

Substitute into equation 1

F = 5.2×14.4

F = 74.88 N

Hence the force exerted on the ball is 74.88 N

Answer:

converge

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Answer:

I don't know the answer but I needed the answer to that on a quiz and I downloaded sorcatic and it brings u to an app or website with the answer I hope this helps if you can't find the app than just tell me

Answer:

The Right to Protection: According to the Convention, this right includes freedom from all forms of exploitation, abuse and inhuman or degrading treatment.

Explanation:

They by law have to uphold the standards

Answer:

ΔP = - 1.2 Ns

Explanation:

The change in momentum of the hammer head can be given as follows:

[tex]\Delta P = P_f - P_i\\[/tex]

where,

ΔP = Change in Momentum = ?

Pf = Final Momentum

Pi - Initial Momentum

Therefore,

[tex]\Delta P = mv_f - mv_i\\\Delta P = m(v_f - v_i)[/tex]

where,

m = mass of hammer head = 0.15 kg

vf = final speed of hammer = 0 m/s

vi = initial speed of hammer = 8 m/s

Therefore,

[tex]\Delta P = (0.15\ kg)(0\ m/s-8\ m/s)[/tex]

ΔP = - 1.2 Ns

Answer:

When focused light is projected onto the retina, it stimulates the rods and cones. The retina then sends nerve signals are sent through the back of the eye to the optic nerve. The optic nerve carries these signals to the brain, which interprets them as visual images.

Explanation:

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Answer:

the top with the largest radius because the radius of curvature is inversely proportional to the angular velocity

Explanation:

Angular and linear velocity are related

         v = w r

         w = v / r

Therefore, if the linear velocity of the two is the same, the one with the smaller radius has the higher angular velocity.

When reviewing the answers, the correct one is:

the top with the largest radius because the radius of curvature is inversely proportional to the angular velocity

The top that has a smaller angular velocity is D. the top with the larger radius because the radius of curvature is directly proportional to the angular velocity.

It should be noted that the top that has a higher angular velocity will be the top with the smaller radius because the radius of curvature is inversely proportional to the angular velocity

On the other hand, since the two spinning tops have different radii while both have the same linear instantaneous velocities at their edges, then the top that has a smaller angular velocity is the top with the larger radius because the radius of curvature is directly proportional to the angular velocity.

Read related link on:

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Answer:

B. blocks 2 & 3.

Explanation:

Block 1 has equal & opposite forces acting on it.

Block 2 has 5N on one side, 3N on the other. It will move in the direction the 5N of force is pushing.

Block 3 has no opposing force.

Answer:

two team in a conflict

Explanation:

Competition arises whenever two or more parties strive for a common goal which cannot be shared: where one's gain is the other's loss. Competition includes rivalry between entities such as organisms, individuals, economic and social groups, etc.

Explanation:

With most of our blue planet covered by water, it's little wonder that, centuries ago, the oceans were believed to hide mysterious creatures including sea serpents and mermaids. Merfolk (mermaids and mermen) are, of course, the marine version of half-human, half-animal legends that have captured human imagination for ages. One source, the "Arabian Nights," described mermaids as having "moon faces and hair like a woman's but their hands and feet were in their bellies and they had tails like fishes."

C.J.S. Thompson, a former curator at the Royal College of Surgeons of England, notes in his book "The Mystery and Lore of Monsters" that "Traditions concerning creatures half-human and half-fish in form have existed for thousands of years, and the Babylonian deity Era or Oannes, the Fish-god ... is usually depicted as having a bearded head with a crown and a body like a man, but from the waist downwards he has the shape of a fish." Greek mythology contains stories of the god Triton, the merman messenger of the sea, and several modern religions including Hinduism and Candomble (an Afro-Brazilian belief) worship mermaid goddesses to this day.

Answer: for insulation of heat

Explanation:

Windows in cold countries have double glazing windows to provide a barrier against the outside temperature by creating a buffer zone between two glasses.

The air or any other gas-filled between the glasses act as an insulator and offer great resistance to outside temperature thereby maintaining the inside temperature intact.

Answer:

Explanation:

General formula

m1 * vi + m2*v2 = m1*v3 + m2*v4

Givens

m1 = 5

m2 = 2.5

v1 = 8 m/s

v2 = - 4 m/s

v3 = -4 m/s

v4 = x

Solution

5 * 8 - 2.5 * 4 = 5 * -4 + 2.5*x

40 - 10 = -20 + 2.5x

30 = - 20 + 2.5x

50 = 2.5x

x = 50/2.5

x = 20 m/s in the positive direction

Remark

Does this answer make sense? It should. You have 5 kg moving 8m/s in the plus direction. That's a lot of momentum. In addition after the collision, it turns around which is more momentum needed.

It has to give up that extra momentum to the 2.5 kg mass.

Answer:

It happens because the Earth is tilted on its axis around 23 degrees therefore the sun normally never sets at north Pole in summers. The sun doesn't set at Arctic Circle on North pole from about April 19 to August 23 each year due to this phenomenon.

Answer:

80 m or 81.3 m

Explanation:

Initially it had no velocity(as at rest). Let the height be h

Using conservation of energy:

Initial KE + PE = final KE + PE

(1/2) m(0)² + mgh = (1/2) m(40)² + mg(0)

mgh = (1/2) m (1600)

2gh = 16000

h = 1600/(2*10) {for g = 10}

h = 80

80 For g = 9.8, h = 81.3 m

Using Newton's eqⁿ of motion:

v² = u² + 2aS

40² = 0² + 2(g)S

1600/2g = S

For g = 10, S = 80 m

g = 9.8, S = 81.33 m

Explanation:

It is necessary that the student is always focused on his / her greatest goal in his / her academic life. There are many students who aspire to enter a certain college, or to pursue a particular professional career. So my advice for facing social changes that can have a negative impact on your success as a student is to plan your future goals and ambitions, always be up to date with the demands of society, seek help if necessary and always dedicate yourself to the maximum in your studies.

To deal with the social changes that may result in negative impact, the student must be advised, encouraged and also seek psychological help if necessary.

Social change involves alteration or deviations of the social order of a student.

To deal with the social changes that may result in negative impact, the student must be advised, encouraged and also seek psychological help if necessary.

Learn more about social changes here: https://brainly.com/question/13391889