Electric charge only
has an amount. That makes it a

Answer:

164

Explanation:

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

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:

B.

Explanation:

Completely destroy

Answer

3ms^-2

_________

Answer:

I hope it will help you have a great day bye and Mark brainlist if the answer is correct

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#carry on learning

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:

option b

Explanation:

hope its help

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..

Answer:

u don't know friction?

Explanation:

friction?

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.

[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:

k = 100 N/m

Explanation:

The elastic potential energy of a spring is equal to (1/2)kx^2, where k is the spring constant and x is the distance compressed. If the elastic PE is equal to 2J, we can solve for k. Make sure to convert units from cm to m:

(1/2)kx^2 = 2J

kx^2 = 1

k = 1/x^2

k = 1/(0.1)^2

k = 100 N/m

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.

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

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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#SPJ2

Answer:

C - 0 meters

Explanation:

Displacement is the difference in where you started and where you end up. If Bill starts at his house and ends at his house, there was no change in position, meaning Bill had no displacement. In math this would be

400 + (-400) = 400 - 400 = 0

assuming he runs in the positive direction and then in the negative direction. Either way you put it, it still ends up as 0

Based on the calculated Young’s modulus of the material, the material the cylinder could most likely be made of is butyl rubber which has a Young’s modulus of 0.001 to 0.002 GPa.

Young's modulus, Y is a measure of a solid's ability to resist deformation in its length under stress or strain.

Mathematically,

where:

Y = Fl/Ae

where;

π = 3.14

r = 2 cm = 0.02

Area of the cylinder = 3.14 × 0.02^2 = 0.00125 m^2

When a mass 5 kg was placed on the cylinder:

F = 5 × 10 = 50 N

l = 10 cm = 0.1 m

e = 10 - 7.73 = 0.39 cm = 0.0039 m

A = 0.00125 m^2

Using Y = Fl/Ae

Y = (50 × 0.1)/(0.00125 × 0.0039)

Y = 1025641.026 N/m^2

1 N/m^2 = 1 × 10^-9 GPa

Y = 0.001025 Gpa

When a mass 50 kg was placed on the cylinder:

F = 50 × 10 = 500 N

l = 10 cm = 0.1 m

e = 10 - 7.73 = 2.27 cm = 0.0227 m

A = 0.00125 m^2

Using Y = Fl/Ae

Y = (500 × 0.1)/(0.00125 × 0.0227)

Y = 1762114.537 N/m^2

1 N/m^2 = 1 × 10^-9 GPa

Y = 0.00176 Gpa

The Young’s modulus of the material is between 0.001025 Gpa and 0.00176 Gpa.

Therefore, the material the cylinder could most likely be made of is butyl rubber which has a Young’s modulus of 0.001 to 0.002 GPa.

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The material that the cylinder is made from is Butyl Rubber.

Young's modulus, or the modulus of elasticity in tension or compression, is a mechanical property that measures the tensile or compressive strength of a solid material when a force is applied to it.

A = πr²

[tex]A = \pi \times (0.02)^2 = 0.00126 \ m^2[/tex]

[tex]E = \frac{stress}{strain} \\\\E = \frac{F/A}{e/l} \\\\E = \frac{Fl}{Ae} \\\\[/tex]

Where;

When 5 kg mass is applied, the extension = 10 cm - 9.61 cm = 0.39 cm = 0.0039 m.

[tex]E = \frac{(5\times 9.8) \times 0.1}{0.00126 \times 0.0039} \\\\E = 9.97 \times 10^5 \ N/m^2\\\\E = 0.000997 \times 10^9 \ N/m^2\\\\E = 0.000997 \ GPa\\\\E \approx 0.001 \ GPa[/tex]

When the mass is 50 kg,

extension = 10 cm - 7.73 cm = 2.27 cm = 0.0227 m

[tex]E = \frac{(50\times 9.8) \times 0.1}{0.00126 \times 0.0227} \\\\E = 1.7 \times 10^6 \ N/m^2\\\\E = 0.0017 \times 10^9 \ N/m^2\\\\E = 0.0017 \ GPa\\\\E \approx 0.002 \ GPa[/tex]

The Young's modulus is between 0.001 GPa  to 0.002 GPa

Thus, the material that the cylinder is made from is Butyl Rubber.

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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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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:

I believe it is D

Explanation:

Answer:

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:

If the mass of one body is doubled, force is also doubled.

Taking into account the Universal Law of Gravitation, if the masses of one body is doubled, the gravitational force between two bodies is also doubled.

The Universal Law of Gravitation establishes that bodies, by the simple fact of having mass, experience a force of attraction towards other bodies with mass, called gravitational force.

The Universal Law of Gravitation states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance that separates them.

Mathematically it is expressed as follows:

[tex]F=G\frac{Mm}{d^{2} }[/tex]

where:

By definition of gravitational force, the greater or lesser the value of any of the masses causes the force to be greater or lesser respectively.

Finally, if the masses of one body is doubled, the gravitational force between two bodies is also doubled.

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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:

  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

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:

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

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:

hope it will help you have a great day bye and Mark brainlist if the answer is correct

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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

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