Which field is this? Explain what's happening.

Answer:

Centripetal force is perpendicular to velocity and causes uniform circular motion. ... force exerted on a 900.0-kg car that negotiates a 500.0-m radius curve at 25.00 m/s. ... A car moving at 96.8 km/h travels around a circular curve of radius 182.9 m ... Because the car does not leave the surface of the road, the net vertical force ...

Explanation:

HE monda

Answer:

Newton's third law states that " for every action, there is an equal and opposite reaction". In soccer, when you kick the soccer ball you will feel the force of the kick back into your leg. You won't feel the force as much because your legs have more mass than the soccer ball.

Answer:

power will three times decrease (one-third)

Explanation:

P = W / t

thus when work is constant, power is inversely proportional to time

so, when time is tripled, power is decreased to one-third

The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases.  As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.

Explanation: It's really blurry and sideways

Your answer would be C.

A step-up transformer is a transformer that raises voltage from main to secondary by having more secondary winding turns than primary winding turns.

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this question is unclear. please specify.

The name of metals does change when they become part of compounds.

When they are a component in a compound, metal elements' names may change. This is so that metal elements can combine with other elements to create various kinds of compounds. In order to identify the oxidation state or the type of compound created, prefixes and suffixes are often used in the naming conventions for metal elements in compounds.

Some examples of compounds are:

Salt (Na):

Sodium chloride is created when chlorine and sodium combine.

The word "sodium" is changed to "sodium chloride" to denote that the substance is a mixture of sodium and chlorine.

Steel (Fe):

Iron becomes iron oxide when it joins with oxygen to form a chemical.

The word "iron" is changed to "iron oxide" to denote that the product is a result of the fusion of iron and oxygen.

You can see from these examples that when metal components are included in a compound, their names alter to reflect the elements the combination includes. The naming rules make it easier to recognize particular compounds and set them apart from the individual metal constituents.

Hence, the name of metals does change, when they become part of compounds.

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Answer:

Construction pulleys are used in order to lift and place heavy materials. Curtains at a theatre are moved using pulley systems that pull the curtains apart. Blinds on windows operate using a pulley system to move the blinds up and down.

We use pulleys for things like and elevators, cranes, and bikes.

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Answer:

Surface waves, in contrast to body waves can only move along the surface. They arrive after the main P and S waves and are confined to the outer layers of the Earth. They cause the most surface destruction. Earthquake surface waves are divided into two different categories: Love and Rayleigh.

Explanation:

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Answer:

Surface waves  are the seismic waves that cause the most damage.

Explanation:

Answer:

They will crash with the force of 6,000N

Explanation:

Force is equal to mass time acceleration. When we multiply 200 kg, the mass, and 30 m/s2, the acceleration, the answer is 6,000.

Answer:

3.59x10^7

Explanation:

Khan

The distance between the two asteroids of mass 1.41 × 10¹⁴ kg and gravitational force of 1030 N is 3.588 × 10⁷m.

The gravitational force can be defined as the force of attraction or the attractive force which attracts all the physical forms which have some mass. It is by far the weakest recognized natural force on this planet.

Given mass of each of the two asteroids is 1.41 × 10¹⁴ kg

Gravitational force = 1030 N

Let the distance between the two asteroids be 'd'

We know,  F = (G × m₁ × m₂) /d²

F = G × m²/ d² (mass of asteroids is same)

d = ([tex]\sqrt{G/F}[/tex]) M

Therefore, d = (√6.67 × 10⁻¹¹/ 1030)× 1.41 × 10¹⁴ kg

d = 3.588 × 10⁷m

Therefore, the distance between the two asteroids is 3.588 × 10⁷m.

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Statement C  is false. Doubling the mass doubles the acceleration is the wrong statement.

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Force is defined as the product of mass and acceleration. Its unit is Newton.

Mathematically, the force is;

[tex]\rm F= ma[/tex]

If force is constant, the mass is inversely proportional to the acceleration. If the mass is double in that condition, acceleration is halved.

Doubling the mass doubles the acceleration is the wrong statement.

Hence, statement C  is false

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Answer:

(D) is visible light

Explanation:

(F) is xray and (B) is radio

Answer:

a) 52.915 m

b) The vertical velocity is approximately 21.092 m/s

The resultant velocity is approximately 26.5 m/s

Explanation:

a) The height of the window in the house from which the water was thrown = 15 m

The speed of the stream of water thrown = 20 m/s

The angle at which the water was thrown = 37° over the horizontal

The acceleration due to gravity, g = 10 m/s²

a) The distance from the base of the house at which the water will fall is given as follows;

y = y₀ + u·t·sin(θ) + 1/2·g·t²

Where;

y = The vertical height reached    

u = The initial velocity

t = Time of flight

From the point the steam of water is thrown, we get;

y₀ = 15 m

Therefore;

y = 15 + 20 × t × sin(37°) - 1/2 × 10 × t²

y = 15 + 20 × t × sin(37°) - 5 × t²

When y = 0, Ground level, we get

0 = 15 + 20 × t × sin(37°) - 5 × t²

5·t² - 20×sin(37°)×t -15 = 0

∴ t = (20 ×sin(37°) ± √((-20 × ·sin(37°))² - 4 × (5) × (-15)))/(2 × 5)

t ≈ 3.3128302, or t ≈ 0.906

Therefore, the time of flight of the water, t ≈ 3.3128302 seconds

The distance from the base of the house at which the water will fall = The horizontal distance travelled by the water, x

x = u·cos(θ)×t

∴ x = 20 × cos(37°) × 3.3128302 ≈ 52.915

The distance from the base of the house at which the water will fall = x ≈ 52.915 m

b) The velocity at which the water will reach the ground, 'v', is given as follows;

The vertical velocity, [tex]v_y[/tex] = u·sin(θ)·t - g·t

At the ground, t ≈ 3.3128302 seconds

∴ [tex]v_y[/tex] = 20 × sin(37) - 10 × 3.3128302 ≈ -21.092

The vertical velocity at which the water will reach the ground, [tex]v_y[/tex] ≈ 21.092 m/s (downwards)

The resultant velocity, v = √([tex]v_y[/tex]² + vₓ²)

∴ v = √(21.092² + (0 × cos(37°))²) ≈ 26.5

The resultant velocity at which the water will reach the ground, v ≈ 26.5 m/s.

Answer:

The locus of points where the electric field due to these lines is zero is;

Along the line between the lines closer to line#1 than line #2

Explanation:

The charges on the parallel lines #1 and #2 = Positive linear charge

The charge density on line #2, λ₂ = 2 × The charge density on line #1, λ₁

Therefore, we have;

λ₂ = 2 ×  λ₁

Electric field strength, E, is given as follows;

[tex]E = \dfrac{\lambda}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

Therefore;

[tex]E_1 = \dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

[tex]E_2 = \dfrac{\lambda_2}{2\cdot \pi\cdot \epsilon_0\cdot d} = 2 \times\dfrac{\lambda_1}{2\cdot \pi\cdot \epsilon_0\cdot d}[/tex]

E₂ = 2·E₁

E₂/2 = E₁

E₂/(2·d) = E₁/d

The strength of the electric field at a given distance from line #2 is 2 times the strength of the electric field from line #1 at the same distance

Therefore the strength of the electric field will be the same at a point twice the distance from line #2 than from line #1 which is a point closer to line #1 than line #2.

Answer:

ΔL = 0.429 m

Explanation:

The expression for linear thermal expansion is

         ΔL = α L₀ ΔT

the coefficient of linear expansion of steel is 11 10⁻⁶ ºC⁻¹

the initial length of the bridge is L₀ = 1.30 10³ m and the temperature variation is ΔT = 30 ºC

calculate  

        ΔL = 11 10⁻⁶  1.30 10³  30

        ΔL = 4.29 10⁻¹ m

        ΔL = 0.429 m

Answer:thermal energy

Explanation:

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Answer:

Forensic scientists must accurately interpret test results

Explanation:

Misinterpreting test results could mean someone being falsely accused of a crime which you would want to avoid.

Answ

im so sorry i dont know the answer

Answer:

a) the number of particles increases

b) average distance between them should decrease

c) the number of particles decreases, the pressure must also decrease

Explanation:

a) When the girl pumps to increase the pressure inside the tire she introduces more particles. Therefore the number of particles increases

b) as the volume of the tire does not change and there are more particles, the average distance between them should decrease

c) When a hole is opened, some of the particles inside the tire come out, so as the number of particles decreases, the pressure must also decrease

Answer:

1,3,7,8

Explanation:

Edge 2021

Answer:

Explanation:

The puppy starts and ground level and goes up a flight of stairs 10 m weighs 30N. The weight doesn't change so the only thing that can is the height.

Energy change = F * d

Energy change = 30 * 10

Energy change = 300 J

Answer:

[tex]\mu_k=0.5[/tex]

Explanation:

From the question we are told that:

Force [tex]F=75N[/tex]

Weight [tex]W=150N[/tex]

Generally the equation for coefficient of friction [tex]\mu_k[/tex] is mathematically given by

[tex]\mu_k=\frac{F}{mg}[/tex]

[tex]\mu_k=\frac{75}{150}[/tex]

[tex]\mu_k=0.5[/tex]

Answer:

Ionic bonds are formed between cation and anions . A cation is formed when a metal ion loses valence electron while an anion is formed when a non-metal gains a valence electron.

Answer:

Option B.

Explanation:

The bending of a wave when it reaches the interface separating two media is called refraction of light.

In figure B, the wave initially in medium 1. Then it reaches the interface. After that it bends. It means the bending of light occurs in this case.

Hence, the correct option is (B).

Answer:

When you put un-like poles together (South facing North) you can feel magnetic attraction. In the Northern Hemisphere, your compass needle points North, but if you think about it for a moment, you will discover that the magnetic pole in the Earth's Northern Hemisphere has to be a South polarity.