Please help in one minute will mark brainlist

Answer:

B. It appears to have reversed left and right, relative to the object

Answer:

Its A. Walking on the beach

Answer:

walking on a bench is the answer

Answer:

A wave that has smaller amplitude than another carries less what

Waves that have smaller amplitude have less energy. the particles of the waves. rarefactions are far amplitude waves. Wavelength is the distance from one crest to the next crest or from one trough to the next trough.

Explanation:

Answer:

the frequency of the fog horn with a higher pitch is 177.07 Hz

Explanation:

Given the data in the question;

time between a minimum and the next maximum in loudness = 0.14 seconds

So,

Time T between the two continuous maximum in loudness will be;

⇒ T = 2 × 0.14 sec

T = 0.28 seconds

Thus, beat frequency [tex]f_b[/tex] will be;

[tex]f_b[/tex] = 1 / T

we substitute in the value of T

[tex]f_b[/tex] = 1 / 0.28

[tex]f_b[/tex]  = 3.5714 Hz

Now, we know that;  [tex]f_b[/tex] = [tex]f_2[/tex] - [tex]f_1[/tex]

we solve for [tex]f_2[/tex]

[tex]f_2[/tex] = [tex]f_b[/tex] + [tex]f_1[/tex]

given that; the lower pitch has a frequency of 173.5 Hz

we substitute

[tex]f_2[/tex] = 3.5714 Hz + 173.5 Hz

[tex]f_2[/tex] = 177.07 Hz

Therefore, the frequency of the fog horn with a higher pitch is 177.07 Hz

Answer:

(a) [tex]\sqrt{2gH}[/tex]

(b) [tex]\sqrt{gH}[/tex]

(c) [tex]\frac{3u^{2}}{8g}[/tex]

Explanation:

The maximum height = H

(a) Let the speed of the ball as it leaves the hand is u.

Use third equation of motion

[tex]v^{2}=u^{2}+2as\\0 = u^{2}- 2 gH\\u=\sqrt{2 gH}[/tex]

(b) Let the speed of the ball at H/2 is v.

Use third equation of motion

[tex]v^{2}=u^{2}+2as\\v^{2} = u^{2}- 2 g\frac{H}{2}\\v^{2}=2 g H - gH = gH\\v =\sqrt{gH}[/tex]

(c) Let the height is h.

[tex]v^{2}=u^{2}+2as\\\frac{u^{2}}{4} = u^{2}- 2 gh \\\\2 g h = \frac{3u^{2}}{4}\\h =\frac{3u^{2}}{8g}[/tex]

Answer:

Yes.

a = dv/dt

but v might be zero in an instant.

Take the example of a pendulum.

Acceleration is defined as the rate of change of the velocity of the body. Yes, an automobile at rest can accelerate very fast.

Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.

[tex]\rm a=\frac{dv}{dt}[/tex]

a is the acceleration of the body

dv is the change of velocity of the body

dt is the change in the time interval

The acceleration is defined as the change in velocity, and the slope of velocity is found as acceleration. It can be said that the body is at rest its velocity is zero.

The acceleration of the body can be increased when the body changes its direction. So the moment at which the body changes the direction the body is at rest after that the body can accelerate.

To learn more about acceleration refer to the link;

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Answer:

F₁ / F₂ = 10

therefore the first out is 10 times greater than the second barrier

Explanation:

For this exercise let's use the relationship between momentum and momentum.

         I = F t = Δp

in this case the final velocity is zero

        F t = 0 -m v₀

        F = m v₀ / t

in order to answer the question we must assume that the two vehicles have the same mass and speed

concrete barrier

        F₁ = -p₀ / 0.1

        F₁ = - 10 p₀

barrier collapses

         F₂ = -p₀ / 1

let's look for the relationship of the forces

        F₁ / F₂ = 10

therefore the first out is 10 times greater than the second barrier

Answer:

Difference in experimental data.

Explanation:

There is difference of experimental value between the experiment that is performed on the earth and on the international space station because presence of gravity. The result of the experiment on the earth is different due to the presence of gravity that contributes in the result of the experiment as compared to international space station where no gravity is present so there is high difference of the numerical value of the result of both experiments of earth and international space station.

Answer: a) 4800 W  b) 6 %  c) most of the energy of fuel is converted to heat in combustion engine

Explanation: a) Power P = W/t = 96 000 J / 20 s = 4800 W

b) efficiency η = P(putput) / P(intake) = 4800 W / 80000 W = 0,06

Answer:

From the First Law of Motion

Vf = Vi + at

"It reaches a speed of 52m/s" meaning the Final speed Vf=52

a(acceleration)=10m/s²

t=4s

Applying the formula

52=Vi + 10(4)

Vi = 52-40

Vi = 12m/s

Answer:

The current flowing through the wire is 9 A.

Explanation:

Given;

quantity of charge passing through the wire, Q = 36 C

duration of the charge flow, t = 4 s

The current flowing through the wire is calculated as;

Q = It

I = Q / t

where;

I is the current flowing in the wire

I = 36/4

I = 9 A

Therefore, the current flowing through the wire is 9 A.

Answer:

P=1200watts

Explanation:

Power=voltage*current

V=120v

I=10A

P=120v*10A

P=1200watts

The correct option about power rating is, “1200 V”.

The quantity of energy moved or transformed per unit of time is known as power, and its unit is "watt".

We have given Potential Difference and current

So, we can use the formula which contain Potential Difference and current.

Which is,

Power = Potential Difference × Current

Power = 120 × 10 watts

Power = 1200 watts

Hence the power rating came out to be 1200 watt after solving.

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Answer:

My greatest scientist is David Baltimore.

Explanation:

David Baltimore is an American biologist, university administrator, and 1975 Nobel laureate in Physiology or Medicine. He is currently President Emeritus and Distinguished Professor of Biology at the California Institute of Technology, where he served as president from 1997 to 2006.

Hope I helped! Ask me anything if you have any questions. Brainiest plz!♥ Hope you make a 100%. Have a nice morning! -Amelia♥

Answer:

This question is improper, The Formula for work is force times distance, it only provides you with force and time so you cannot calculate work without the distance, Maybe you've mistaken work for power, The formula is work  divided by time, but ask your teacher to provide you with more information because this entire question is WRONG. If it didnt give you a distance there is a possibility that it's 0 which would be 35N*0m, get some clarification.

Explanation:

INCORRECT question

W=F*D

P=W/T

Answer:

500 m

Explanation:

Applying,

v = λf.................... Equation 1

Where v = speed of light, λ = wave length, f = frequency of light.

make λ the subject of the equation

λ = v/f............... Equation 2

From the question,

Given: v = 3×10⁸ m/s, f = 6×10⁵ Hz

Substitute these values into equation 2

λ = 3×10⁸/6×10⁵

λ = 500 m

Answer:

Explanation:

First of all we shall find the velocity at equilibrium point of mass 1.2 kg .

It will be ω A , where ω is angular frequency and A is amplitude .

ω = √ ( k / m )

= √ (170 / 1.2 )

= 11.90 rad /s

amplitude A = .045 m

velocity at middle point ( maximum velocity ) = 11.9 x .045 m /s

= .5355 m /s

At middle point , no force acts so we can apply law of conservation of momentum

m₁ v₁ = ( m₁ + m₂ ) v

1.2 x .5355 = ( 1.2 + .48 ) x v

v = .3825 m /s

= 38.25 cm /s

Let new amplitude be A₁ .

1/2 m v² = 1/2 k A₁²

( 1.2 + .48 ) x v² = 170 x A₁²

( 1.2 + .48 ) x .3825² = 170 x A₁²

A₁ = .0379 m

New amplitude is .0379 m

Answer:

No energy leaves the system if there’s no friction between the cars and the tracks.

Explanation:

The lack of friction affects the energy of the roller coaster system. Because no energy leaves the system if there is no friction between the cars and the rails.

It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N).

Gravitational potential and kinetic energy, which are the roller coaster's usable energies, are converted to heat energy by friction.

A roller coaster is affected by air friction and resistance since it is in the air, and this creates a force that opposes the movement of the cart.

A portion of the energy is lost as a result of friction caused by the brakes, wind drag on the train, and friction between the wheels and the rails.

Since there is no friction on the roller coaster track, there is no heat transmission from the track to the environment.

The roller coaster system's energy is impacted by the absence of friction. Because if there is no friction between the automobiles and the rails, no energy exits the system.

Hence, lack of friction affects the energy of the roller coaster system.

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Answer:

Explanation:

The branch of science which deals with celestial objects, space, and the physical universe as a whole.

Answer:

The study of the stars, planets, and galaxies. People study astronomy to origins and evolution of our celestial objects and phenomena

Explanation:

Answer: A. Work is done on the system and heat is transferred from the system for a net decrease in internal energy.

Explanation:

A refrigerator is a device which dispenses heat from the close system to a warmer area or in the surrounding. By dispensing the heat the internal temperature of the refrigerator drops. The system of refrigerator violates the second law of thermodynamics. As it performs the work to cool the region instead of heating the region. The work is done on the system and the internal energy decreases and the heat energy is liberated to the surrounding area. A refrigerator is an open system.

Answer: antacids

Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.

Answer: antacids

Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.

Answer:

b

Explanation:

just add

After a spring is compressed 0.2 meters from its uncompressed length, it exerts a 20 newton force on a 0.4 kg block resting on a horizontal frictionless surface. after it is released, the block will reach a maximum velocity of 3.2 m/s.

The directional speed of an item in motion, as measured by a specific unit of time and viewed from a certain point of reference, is what is referred to as velocity.

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, velocity is a vector, whereas speed is a scalar number.

Velocity is a unit of measurement for motion that begins in one location and moves to another. There are several practical uses for velocity, but one of the more frequent ones is figuring out how quickly you or anything in motion will go from one place to another.

Thus, option B is correct.

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Answer:

A. reduce the amount of soil by one-half and apply the same amount of force

Explanation:

Answer:

Aufbau diagram of sodium ion:

2s²,2p⁶,3s¹

Answer:

s = 0.337 m

Explanation:

First, we will find the angular displacement of the reel:

[tex]\theta = \omega t[/tex]

where,

θ = angular displacement = ?

ω = angular speed = 1.9 rad/s

t = time taken = 7.1 s

Therefore,

θ = (1.9\ rad/s)(7.1 s)

θ = 13.5 rad

Now, we will find out the length of tape:

s = rθ

where,

s = length of tape = ?

r = radius of reel = 2.5 cm = 0.025 m

Therefore,

s = (0.025 m)(13.5 rad)

s = 0.337 m

Answer:

So you have a question

Explanation:

either way have a nice day

The magnitude of the tension in the rope of this two-block system is:

[tex]T=73.56\: N[/tex]

We have here an equilibrium system, which means that all forces acting are equal to zero.

We can analyze the hanging block. We just two forces acting in this block, the tension upwards (T) direction and the weight downward (W) direction.

[tex]T-W_{2}=0[/tex]

[tex]T=W_{2}[/tex]

[tex]T=m_{2}g[/tex]

[tex]T=m_{2}g[/tex]

The mass of the second mass is 7.5 kg and g = 9.81 m/s².

[tex]T=7.5*9.81[/tex]

[tex]T=73.56\: N[/tex]

Therefore, the tension will be 73.56 N.

You can learn more about tension forces here:

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I hope it helps you!

Answer:

g = 12.22 m/s²

Explanation:

The time period of this pendulum is given as follows:

[tex]T = \frac{time\ taken}{no. of cycles}\\\\T = \frac{144\ s}{93}\\\\T = 1.55\ s[/tex]

but the formula for the time period of a simple pendulum is as follows:

[tex]T=2\pi \sqrt{\frac{l}{g}}\\[/tex]

where,

L = length of pednulum = 48 cm = 0.48 m

g = magnitude of th gravitational acceleration on this planet = ?

Therefore,

[tex]1.55\ s=2\pi \sqrt{\frac{0.48\ m}{g}}\\\\\sqrt{g} = 2\pi \sqrt{\frac{0.48\ m}{1.55\ s}}\\\\g = 3.49^{2}\\[/tex]

g = 12.22 m/s²

Answer: when the ground is very hot and the air is cool. The hot ground warms a layer of air just above the ground. When the light moves through the cold air and into the layer of hot air it is refracted (bent). A layer of very warm air near the ground refracts the light from the sky nearly into a U-shaped bend.

Explanation: