calculate the GPE of a rock with a mass of 55kg on a cliff that is 27m high

Answer:

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The Answer to this question is Number B.

Answer :- B

Latent heat is the heat required to change the phase. When the temperature remains constant during melting or boiling the added energy is employed in the phase change process.

The average kinetic energy (KE) is defined as the one-half of the mass of each gas molecule times multiplied by the square of RMS velocity.

[tex]KE = \frac{1}{2}m (V_{rms})^{2}[/tex]

where,

KE is the kinetic energy

m is the mass of each molecule

(V)rms is the RMS velocity

As we know since the temperature is increasing the average kinetic energy of the particle increases. So the added energy is utilized in the sensible heat due to which the temperature of the body increases resulting in the increase in average kinetic energy

But when the temperature remains constant during melting or boiling the added energy is converted into latent heat energy utilized to convert the phase of a substance.

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At the top of the hill, the cars have a great deal of gravitational potential energy, equal to the cars' weight multiplied by the height of the hill. When the cars are released from the chain and begin coasting down the hill, potential energy transforms into kinetic energy until they reach the bottom of the hill.

Answer:

The number of electrons and protons are always equal in a neutral atom. The total number of protons in the nucleus of an atom gives us the atomic number of that atom.

Explanation:

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The direction of light wave changes when they are reflected or refracted. So, all the statements are true.

Light waves are defined as the electromagnetic waves made of smaller, energy carrying particles called photons.

Here,

Light is an electromagnetic radiation that can have the properties of both waves and particles.

Light waves can travel in straight lines in the transparent medium like air, glass, still water, etc.

Light waves can travel through any medium or substances.

Sources of light are of two types, natural source and artificial source.

Reflection and refraction are the two properties of light.

Reflection is the phenomenon exhibited by light through which a ray of light incident on a smooth, reflecting surface, gets bounced back. Thus, during reflection, the direction of the light ray changes.

Refraction is the phenomenon by which the the speed of the light decreases when light wave travels from a lighter medium to denser medium. The light wave will bend towards the normal line. Thus, during refraction, the direction of light wave changes.

Hence,

The direction of light wave changes when they are reflected or refracted. So, all the statements are true.

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The term Young Modulus is used to describe the stress to strain of a material.  and is a measure of the strength of a material.

The term Young Modulus is used to describe the strength of a material. It is a ratio of the stress to strain of a material. The unit of Young Modulus is N/m2.

The question is incomplete hence the average Young's modulus, in units N/m2 can  not be computed. This value helps an engineer to make decision regarding the use of materials for construction.

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[tex] \bf\dag \frak{Solution}[/tex]

Kinematics is the study of the motion of mechanical points, bodies and systems without consideration of their associated physical properties and the forces acting on them.

In simple words it's just Kinematics is the science of describing the motion. ^^

Kinematic is a branch of mechanics that deals with the study of the motion of a body without considering the force that causes it.

Kinematic is the branch of Mechanics that deals with the study of the motion of a body, without regard to the force that causes the motion.

The following are the examples of kinematic

Hence, Kinematic is a branch of mechanics that deals with the study of the motion of a body without considering the force that causes it.

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Answer:

it will be 3 seconds

Explanation:

initial  horizontal velocity of the rock, u = 20 m/s

horizontal distance traveled by rock, R = 60 m

The the range of the projectile is given by;

R = vt

where;

v is the initial  horizontal velocity of the rock

t is the time spent by the rock in air

t = R/v

t = 60 / 20

t = 3 s

Answer:

step 1 the initial velocity of the car is u = 30 m/s.the final velocity of the car is v = 0 m/s. the time taken by

Option A) is correct.

We are given –

Formula To be used:-

[tex]\qquad[/tex] [tex]\star\: \: \pink{\boxed{\frak{ a = \dfrac{(v-u)}{t}}}}[/tex]

Where–

[tex]\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}[/tex]

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━

[tex]\qquad[/tex][tex] \bf \longrightarrow a = \dfrac{v-u}{t}[/tex]

[tex]\qquad[/tex][tex] \sf \longrightarrow a = \dfrac{5-15}{t}[/tex]

[tex]\qquad[/tex][tex] \sf \longrightarrow a = \dfrac{-10}{5}[/tex]

[tex]\qquad[/tex][tex] \sf \longrightarrow a = \cancel{\dfrac{-10}{5}}[/tex]

[tex]\qquad[/tex][tex]\pink{ \bf \longrightarrow a = -2 \:m/s^2}[/tex]

Answer:

-2 m/s²

Explanation:

Here it's given that a skateboard changes its velocity from 15m/s to 5m/s in an interval of 5s . We are interested in finding out the acceleration of the skateboard. Firstly we know that,

[tex]\qquad\rm\twoheadrightarrow accl^n =\dfrac{v - u }{t} [/tex]

Here ,

On substituting the respective values, we have;

[tex]\qquad\rm\twoheadrightarrow accl^n =\dfrac{5m/s-15m/s}{5s}[/tex]

Simplify numerator,

[tex]\qquad\rm\twoheadrightarrow accl^n =\dfrac{-10m/s}{5s}[/tex]

Divide,

[tex]\qquad\rm\twoheadrightarrow \underline{\boxed{\blue{\rm acceleration= -2\ m/s^2}}} [/tex]

Therefore, Option A is correct choice.

Answer:

hydrogen and helium

Explanation:

From left to right, the outer planets are Jupiter, Saturn, Uranus, and Neptune. The gas giants are made up primarily of hydrogen and helium, the same elements that make up most of the Sun.

Answer:

GRAVITY

Explanation:

Answer:

Thanks

Explanation:

After the softball leaves your hand, it rises, slowing down the SOLUTION After the softball reaches its maximum height,it falls down speeding up.

The object is speeding up

Answer:

option b

Explanation:

hope its help

.....

..

The velocity of the wreckage immediately after the impact is mathematically given as

v=12.284m/s

Question Parameters:

A 2035 kg Oldsmobile traveling east on Saginaw Street at 15.8 m/s is unable to stop on the ice covered intersection for a red light at Abbott Road.

The car collides with a 4012 kg truck hauling animal feed north on Abbott at 10.5 m/s

Generally the equation for the speed after collision   is mathematically given as

mu +MU = ( m + M) v

Therefore

v = ( 2035*15.8 + 4012*10.5 ) / ( 2035+ 4012)

v=12.284m/s

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Answer:

they have an equal amount of weight between the two objects the steel block and the bag of feathers

Answer:

  15.8 N

Explanation:

The component in a given direction is the magnitude of the applied force, multiplied by the cosine of the angle between its application and the direction of interest.

The horizontal component is ...

  (20 N)cos(38°) ≈ 15.8 N

A string exerts a force of 20 N on a box at an angle of 38° from the horizontal. What is the horizontal component of the force on the box?

15.8 N

Explanation:

amazing that you learned a lot of great ideas on your summary business you well from to and as learned that they can do well with their lives for you in the past few they will be a child whose mass is the best thing) )for

Answer:

The density of carbon tetrachloride is 1.59 g/cm^3.

Given the following data:

Mass of flask = 345.8 gVolume of carbon tetrachloride = 225 mLMass of flask and carbon = 703.55 g

To find the density of carbon tetrachloride;

First of all, we would determine the mass of carbon tetrachloride;

Mass of flask and carbon = mass of flask + mass of carbon tetrachloride

703.55 = 345.8 + mass of carbon tetrachloride

Mass of carbon tetrachloride = 703.55 - 345.8

Mass of carbon tetrachloride = 357.75 g

Next, we would solve for the density of carbon tetrachloride by using the formula;

Substituting the values into the formula, we have;

Density = 1.59 g/cm^3

Therefore, the density of carbon tetrachloride is 1.59 g/cm^3.

Answer:

Total capacitance of the three capacitors in series = 0.4615uF

Explanation:

Take the inverse of the three capacitors (in this case you are working with µF so 10^-6) and add their inverse.  The result is ~2.167*10^6.  The inverse of this number is 0.4615 so the total capacitance of this circuit is 0.4615µF.

Answer:

164

Explanation:

Answer:

The Full Moon.

Explanation:

A full moon is made when the sun reflects off the moon's surface closest to us. this causes the moon to look bright at night, and dissapear during the morning.

Answer

3ms^-2

_________

Answer: I am quite sure your answer here is D.

Explanation: It just seems like the only possible answer to me have a good day :D

From what we know, despite not having the diagram for this question, we can confirm that the magnetic force will be perpendicular to the field.

Through multiple calculations regarding the physics of the particle and the magnetic and electrical interactions, we reach the conclusion that the magnetic force will always be perpendicular to the magnetic field.

Therefore, we can confirm that the magnetic force will be perpendicular to the field.

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Answer:

B.

Explanation:

Completely destroy

A cooler star would emit mostly in infrared range of the spectrum.

High temperature stars like the Sun, which are approximately 6000 K at the surface, emit most of their radiation at visible wavelengths.

In stark contrast to high temperature stars, the cooler stars emit most of their radiations in the infrared (IR) range.

Thus, we can conclude that,  a cooler star would emit mostly in infrared range of the spectrum.

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Answer:

The density of a substance is the relationship between the mass of the substance and how much space it takes up

Explanation:

thats it  take my word hope thats what u meant

Density is a measure of mass per unit of volume. Density is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water). Perhaps the highest density known is reached in neutron star matter. The singularity at the centre of a black hole, according to general relativity, does not have any volume, so its density is undefined.

Answer:

A common term is "nodes", also minimums.

Answer:

C, proof that the driver has life insurance.

Explanation: