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Answer:-1 m/s/s

Explanation:

The acceleration of the bus when its velocity changes from 15 m/s to 5 m/s will be a=1 m/s^2

Acceleration is defined as the change of the velocity with the time. Acceleration is a vector quantity and is defined by both the magnitude and the direction.

Now from the first equation of motion we have,

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

we have V=15 m/s, u=5 m/s , t=10 seconds

[tex]a=\dfrac{15-5}{10}=1\ \frac{m}{s^2}[/tex]

Hence the acceleration of the bus will be a=1 m\s^2

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Answer:

yo can someone answer i need this

Explanation:

Answer:

The cork moves up and down.

Explanation:

The cork moves up and down because of the waves produce due to tapping the surface of water. The cork experience movement due to placed on the water surface so when the wave passes through the medium by tapping of water, movement of cork also occur. Cork has high volume and lower mass so it floats on the water surface and experience movement due to waves.

Im not sure what are you asking about. But in physic/ mechanic usually when the object against gravity, its deceleration but when the object follow the gravity its acceleration

Also usually when the object move to the left side the speed will be negative (-) this is probably because of deceleration? since deceleration = -acceleration.

Answer:

[tex]\boxed {\boxed {\sf 14 \ meters \ per \ second}}[/tex]

Explanation:

Speed is the rate of motion and can be found by dividing the distance by the time.

[tex]s=\frac{d}{t}[/tex]

The distance covered is 56 meters and the time taken is 4 seconds.

[tex]d= 56 \ m \\t= 4 \ s[/tex]

Substitute the values into the formula.

[tex]s=\frac{56 \ m}{4 \ s}[/tex]

Divide.

[tex]s= 14 \ m/s[/tex]

The speed of the car is 14 meters per second

Answer:

Displacement

Explanation:

I took the test.

Answer:

Distance Is how far an object has moved.

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]

m is the mass

v is the velocity

From the question we have

[tex]k = \frac{1}{2} \times 74 \times {11}^{2} \\ = 37 \times 121[/tex]

We have the final answer as

Hope this helps you

Answer:

yes

Explanation:

I would say yes because it's exerting some type of force as it reacts to the stick to make it jump straight in an upwards direction

Answer:

The pitch that he hears after the truck passes and is moving away is 819.6 Hz.

Explanation:

The pitch that he hears after the truck passes and is moving away can be calculated using the following equation:    

[tex] f = f_{0}*\frac{v_{s} \pm v_{o}}{v_{s} \pm v_{f}} [/tex]

Where:

[tex]f[/tex]: is the perceived frequency

[tex]f_{0}[/tex]: is the emitted frequency

[tex]v_{s}[/tex]: is the speed of sound = 340 m/s

[tex]v_{o}[/tex]: is the speed of the observer = 0 (he is not moving)

[tex]v_{f}[/tex]: is the speed of the fire truck

First, we need to find the speed of the fire truck. When it approaches the observer we have:

[tex] f = f_{0}*\frac{v_{s} + v_{o}}{v_{s} - v_{f}} [/tex]

[tex] 950 Hz = 880 Hz*\frac{340 m/s}{340 m/s - v_{f}} [/tex]

[tex] v_{f} = 340 m/s - \frac{880 Hz*340 m/s}{950 Hz} [/tex]

[tex] v_{f} = 25.05 m/s [/tex]

Hence, the speed of the fire truck is 25.05 m/s.

Now, we can calculate the pitch that the observer hears after the truck passes:

[tex] f = f_{0}*\frac{v_{s} - v_{o}}{v_{s} + v_{f}} [/tex]

[tex] f = 880 Hz*\frac{340 m/s}{340 m/s + 25.05 m/s} [/tex]

[tex] f = 819.6 Hz [/tex]

Therefore, the pitch that he hears after the truck passes and is moving away is 819.6 Hz.

I hope it helps you!                                                          

Answer:

sound waves are transverse waves

Answer:

this point we have a destructive inference  m=1

Explanation:

This is an interference exercise, where the light has two possible states one of constrictive interference

            d sin θ = m λ

and another of destructive interference

           d sin θ = (m + ½) λ

the term on the left is the difference in trajectory that tells us that it is worth

            d sin θ = 300 nm = 300 10⁻⁹ m

We can find what type of interference we have by finding m, which must be an integer

constructive interference

           m = d sin θ /λ

let's calculate

          m = 300 10⁻⁹ / 500 10⁻⁹

          m = 0.6

this value is not possible because m must be an integer

destructive interference

          m + ½ = d sin θ /λ  

          m = d sin θ /λ  + ½

          m = 0.6 + 0.5

         m = 1.1

that can be approximated to m = 1

this value if possible, so at this point we have a destructive inference

Answer:

velocity and wavelength likely to change in the process.

Explanation:

When an object passes from one medium to another, refraction occurs. Due to refraction, it changes iits direction. Some of the properties is changed when it undergoes refraction. The velocity of a wave and wavelength change in this process.

Hence, the correct option is (a) "velocity and wavelength".

The combination of decay processes that would convert U-239 into PU- 239 is beta decay followed by another beta decay. There are two different types of beta decay (positive and negative beta decays) they both occur simultaneously in order to move the atoms towards stability.

Answer:

it is a ionic bond because electrons are transferred from chlorine to strontium

Strontium chloride, SrCl₂, is an ionic compound because Ionic compounds are formed through the transfer of electrons from one atom to another, resulting in the formation of positively charged ions (cations) and negatively charged ions (anions).

In the case of strontium chloride, strontium (Sr) is a metal, and chlorine (Cl) is a non-metal. Strontium readily donates two valence electrons to chlorine, which has a strong affinity for gaining one electron to achieve a stable electron configuration. The electron transfer between strontium and chlorine leads to the formation of S[tex]r^2^+[/tex] cations and C[tex]l^-[/tex] anions. The resulting ionic bond holds the cations and anions together in a crystal lattice structure. The attraction between the oppositely charged ions creates the ionic bond, making strontium chloride an ionic compound.

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Answer:

well i tough it was infinte but its not an the layer is a d         i       c               k  

Explanation:

given that there is no second choice i have to go with helium. if you get the second choice i will revise my answer

Answer:

The value is [tex]s =197.88 \ m[/tex]  

Explanation:

From the question we are told that

    The  impulse is  [tex]I = 950 \ N\cdot s[/tex]

    The mass is  [tex]m = 12 \ kg[/tex]

     The time t =  5 s

Generally impulse is mathematically represented as

         [tex]I = F * t[/tex]

=>       [tex]F = \frac{I}{t}[/tex]

=>       [tex]F = \frac{950 }{ 5 }[/tex]

=>       [tex]F = 190 \ N[/tex]

Generally force is mathematically represented as

      [tex]F = m * a[/tex]

=>    [tex]a = \frac{F }{ m }[/tex]

=>     [tex]a = \frac{190 }{ 12 }[/tex]

=>     [tex]a = 15.83 \ m/s^2[/tex]

Generally from kinematic equation , the distance covered is  

      [tex]s = ut + \frac{1}{2} * at^2[/tex]

Here  u is the initial velocity of the cart and the value is [tex]u = m/s[/tex]

=>   [tex]s = 0 * 5 + \frac{1}{2} * 15.83 * 5^2[/tex]  

=>   [tex]s =197.88 \ m[/tex]  

Answer:

Second Choice.

Explanation:

Jack's Power = W/t

Jill's Power = 2W/(0.5)*t

2/0.5 = 4

Jill's Power = 4*W/t

Jill's Power is 4 times greater than Jack's

Second Choice

Answer:

The momentum of any object that is at rest is 0. Objects at rest do not have momentum..

Answer:12.1 j

Explanation:

Answer:

angle of reflection and angle of incident is always equal

Answer:

Did you think you could pull that off-

:I

I live in Japan anyway so.. ウーフ-

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m).

Work = Force × Distance.

W = 10 N × 0.75 m

The example of a crime against a person is Injuring a stranger.

Injury is any physical damage or harm caused to the body, including cuts, scrapes, bruises, broken bones, and burns. It can be caused by an accident, medical negligence, or intentional harm. Injuries can range from mild to severe and can be temporary or permanent. Treatment for an injury often involves rest, medications, physical therapy, and sometimes surgery. In more severe cases, an injury can cause lasting disability or even death. Prevention of injuries is important, and can be achieved through education, wearing protective gear, and avoiding risky activities.

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Answer:

0.8 m/s

Explanation:

F(avg) * Δt = I, where

F(avg) = Average force

Δt = change in time

I = impulse

From the question, we know that the

average force is given as -17600 N

time change is given as 55 milliseconds

speed of the player, v = 8 m/s

Mass of the player is given as 110 kg

Impulse, I = F(avg) * Δt

I = -17600 * 0.055

I = -968

Now, using the Impulse-Momentum theory, we have that

Δp = I and thus,

Δp = m [v(f) - v(i)], where

Δp = change in the momentum

v(f) = final speed of the player

v(i) = initial speed of the player

Substituting the values, we have

I = m [v(f) - v(i)]

-968 = m.v(f) - m.v(i)

m.v(f) = m.v(i) - 968

110v(f) = 110 * 8 - 968

110v(f) = 880 - 968

110v(f) = -88

v(f) = -88 / 110

v(f) = -0.8 m/s

There are

[tex]6.023 \times {10}^{23} [/tex]

electrons in a mole. So charge of 1 mole electron is

[tex]6 \times {10}^{23} \times ( - 1.6022) \times {10 }^{ - 19} [/tex]

Answer:

(a)When ignoring air resistance its accelerating increases steadily .

(b)When considering air resistance then its acceleration decreases this could either be uniformly or unevenly.

Hope this helped.