A horse travels 1200 meters to the right in 60 seconds. What was its velocity?

a. 72,000 m/s
b. 20 m/s
c. 0.05 m/s
d. 1260 m/s​

Answer:

A.reduce by 4.

Explanation:

In Chemistry, an alpha particle which is typically a helium nucleus has an atomic mass (number of nucleons) of four (4). Therefore, the ejection of an alpha particle by any chemical element simply means that, the mass number of that particular chemical element would be reduced by four (4).

Basically, this process is referred to as an alpha decay and can be defined as a radioactive disintegration of a chemical element that causes it to emit an alpha particle and as a result reducing its mass number by four (4).

Hence, when an element ejects an alpha particle, the mass number of that element reduces by 4.

Answer:

The value is  [tex]N = 2.69 *10^{26} \ photons[/tex]

Explanation:

From the question we are told that

    The power is  [tex]P = 510 \ W[/tex]  

    The wavelength is  [tex]\lambda = 10.5 \ cm = 0.105 \ m[/tex]

Gnerally the number of photon produced is mathematically represented as

             [tex]N = \frac{P * \lambda }{ h * c }[/tex]

Here  [tex]h[/tex] is the Planck's constant with a value   [tex]h = 6.62607015 * 10^{-34} J \cdot s[/tex]

          c is the speed of light with value  [tex]c = 3.0*10^{8 } \ m/s[/tex]

So  

             [tex]N = \frac{ 510 * 0.105 }{ 6.62607015 * 10^{-34} * 3.0 *10^{8} }[/tex]

=>          [tex]N = 2.69 *10^{26} \ photons[/tex]

Answer:

Oxidation state: the charge an atom has if it was bonded ionically to other atoms. Different oxidation states indicate different abilities to bond with other atoms.

Explanation:

Answer:

The displacement of the spring is 0.12 m.

Explanation:

Given;

spring constant, k = 25 N/m

mass attached to the spring, m = 0.300 kg

displacement of the spring, x = ?

Apply Hook's law, weight of the mass attached (applied force) is directly proportional to the extension of the spring.

F = kx

mg = kx

0.3 x 9.8 = 25x

2.94 = 25x

x = 2.94 / 25

x = 0.12 m

Therefore, the displacement of the spring is 0.12 m.

[tex]{\mathfrak{\underline{\purple{\:\:\: Given:-\:\:\:}}}} \\ \\[/tex]

[tex]\:\:\:\:\bullet\:\:\:\sf{Initial \ velocity \ (u) = 13 \ m/s }[/tex]

[tex]\:\:\:\:\bullet\:\:\:\sf{Distance \ (s) = 400 \ m }[/tex]

[tex]\:\:\:\:\bullet\:\:\:\sf{ Acceleration = 4 \ m/s^2}[/tex]

[tex]\\[/tex]

[tex]{\mathfrak{\underline{\purple{\:\:\:To \:Find:-\:\:\:}}}} \\ \\[/tex]

[tex]\:\:\:\:\bullet\:\:\:\sf{The \:Final \:velocity \:of \:the\: body }[/tex]

[tex]\\[/tex]

[tex]{\mathfrak{\underline{\purple{\:\:\: Calculation:-\:\:\:}}}} \\ \\[/tex]

☯ Using 3rd equation of motion

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \sf{ {v}^{2} = {u}^{2} +2as }[/tex]

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \sf{ {v}^{2} = {13}^{2} + 2 \times 4 \times 400 }[/tex]

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \sf{{v}^{2} = 169 + 3200 }[/tex]

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \sf{ {v}^{2} = 3369 }[/tex]

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \sf{ v = \sqrt{3369} }[/tex]

[tex]\\[/tex]

[tex]\dashrightarrow\:\: \underline{\boxed{\sf{ v = 58.04 \: m/s }}}[/tex]

[tex]\\[/tex]

[tex]{\mathfrak{\underline{\purple{\:\:\:Additional \:Information:-\:\:\:}}}} \\ \\ [/tex]

☢ Equations Of Motion

[tex]\\[/tex]

[tex]\boxed{

\begin{minipage}{3 cm}$\\

\sf{\:\:\star\:\:v = u +at} \\ \\

\sf{\:\:\star\:\:s = ut + \dfrac{1}{2}\:at^{2} }\\ \\

\sf{\:\:\star\:\:v^{2} = u^{2} + 2as}\\ \\

\sf{\:\:\star\:\:s = \dfrac{1}{2} (u + v)t}\\$

\end{minipage}

} [/tex]

[tex]\\[/tex]

[tex]\sf{Where,}[/tex]

[tex]\:\:\:\:\bullet\:\:\:\textsf{v = Final velocity}[/tex]

[tex]\:\:\:\:\bullet\:\:\:\textsf{u = Initial velocity}[/tex]

[tex]\:\:\:\:\bullet\:\:\:\textsf{a = Acceleration}[/tex]

[tex]\:\:\:\:\bullet\:\:\:\textsf{s = Distance}[/tex]

[tex]\:\:\:\:\bullet\:\:\:\textsf{t = Time taken}[/tex]

Answer:

newton - motion, gravity

kepler - orbital paths

brahe - the sun goes around the earth

Explanation:

im not sure about brahe but its the only one that makes sense

Answer:

1 rev = 2(pi) rad  pi(rad) = 180 degrees

so 33 rev/min * 1 min/60s * (2*pi)rad/1 rev *180 deg/ pi rad * .32 s = 63.36 degrees

Explanation:

63.36 estimated to 63 so 63

The angle in degrees where 33 rpm record turn in 0.32 s should be considered as the 63 degrees.

1 rev = 2(pi) rad

So here  pi(rad) = 180 degrees

Now for 33 rpm it should be like

=  33 rev/min * 1 min/60s * (2*pi)rad/1 rev *180 deg/ pi rad * .32 s

= 63.36 degrees

= 63 degrees

hence, The angle in degrees where 33 rpm record turn in 0.32 s should be considered as the 63 degrees.

Learn more about an angle here: https://brainly.com/question/3394547

Answer:

W = 27468000 [N] or 27.47 [kN]

Explanation:

The weight of a body is defined as the product of mass by gravitational acceleration.

[tex]W = m*g[/tex]

where:

W = weight of the rocket with fuel [kg]

m = mass = 2800000 [kg]

g = gravity acceleration = 9.81 [m/s²]

Now we can solve:

[tex]W = 2800000*9.81\\W = 27468000 [N][/tex]

Answer:

The disk covers a rotation of 90º after 3 seconds.

Explanation:

Since the disk rotates at constant angular speed, we can determine the change in angular position ([tex]\Delta \theta[/tex]), measured in sexagesimal degrees, by the following kinematic formula:

[tex]\Delta \theta = \omega\cdot \Delta t[/tex] (1)

Where:

[tex]\omega[/tex] - Angular velocity, measured in sexagesimal degrees per second.

[tex]\Delta t[/tex] - Time, measured in seconds.

If we know that [tex]\omega= 30\,\frac{\circ}{s}[/tex] and [tex]\Delta t = 3\,s[/tex], then the change in angular position is:

[tex]\Delta \theta = \left(30\,\frac{\circ}{s} \right)\cdot (3\,s)[/tex]

[tex]\Delta \theta = 90^{\circ}[/tex]

The disk covers a rotation of 90º after 3 seconds.

Answer:

The correct answer is  C

Explanation:

  From the question we are told that  

       The frequency of the radar is [tex]f = 24.15 \ GHz = 24.15 *10^{9} \ Hz[/tex]

         The speed of the car is [tex]v = 50 mph = \frac{50}{2.237} = 22.35 \ m/s[/tex]

Generally the difference frequency reflected by the car and the frequency which the radar receives back is mathematically represented as

        [tex]\Delta f = \frac{f * 2 * v }{ c }[/tex]

Here  c is the speed of light with value  [tex]c = 3.0 *10^{8} \ m/s[/tex]

=>    [tex]\Delta f= \frac{2 * 24.15 *10^{9} * 22.35}{ 3.0*10^{8}}[/tex]      

=>    [tex]\Delta f = 4000 \ Hz[/tex]

=>     [tex]\Delta f = 4.0 \ kHz[/tex]  

Given that the value is positive then it a higher frequency

Answer:

True!

Explanation:

Answer:

Thx for points merry Christmas answer 2

Explanation:

Answer:2

Explanation:

Answer:

Speed and direction.....

Answer:

E, A, B, F

Explanation:

The Middle Ear contains:

eardrum.

cavity (also called the tympanic cavity)

ossicles (3 tiny bones that are attached) malleus (or hammer) - long handle attached to the eardrum. incus (or anvil) - the bridge bone between the malleus and the stapes. stapes (or stirrup) - the footplate; the smallest bone in the body.

Answer: rawr

Explanation:

hammer

anvil

ear drum

stirrup

Answer:

C

Explanation:

equation for pendulum period is

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

and it depends only on its length (and gravity which is not on the list of answers)

Asteroids are known through the help of artificial gravity, to have small gravity. The forces that cannot be neglected when analyzing the motion of the astronaut is that the gravitational force between the astronaut and the asteroid.

Unbalanced forces are simply known to be brought about due to a change in motion, speed, and/or direction. If two forces act in the same direction on an object, the net force is said to be equal to the sum of the two forces.

Learn more from

https://brainly.com/question/2784184

Answer:

A & D your welcome

Propanol surface is more flattered and has less boiling point than that of water.

To determine the correct statements among all the statements, we need to know about the surface tension.

Since, propanol has less surface tension than that of water, so its surface is more flattered and has less boiling point than that of water.

Learn more about the surface tension here:

brainly.com/question/277477

#SPJ2

[tex] \underline{\purple{\large \sf Combination \: reaction :-}} [/tex]

Those reaction in which two or more substances combine to form a one new substance are called Combination reaction

In this reaction, We can add :

[tex] \underline{\green{\large \sf For\: example :}} [/tex]

[tex] \sf 2H_{2} + O_{2} \: \underrightarrow{Combination} \: 2H_{2}o[/tex]

In this, Hydrogen is an element and Oxygen is another element. Both are combined to form compound 'Hydrogen oxide'. Hydrogen oxide is commonly known as water.

Answer:

true

Explanation:

Answer:

C) 0.00026 Hz

Explanation:

       [tex]v = \lambda * f (1)[/tex]

       [tex]f = \frac{v}{\lambda} = \frac{700km/hr}{750 km} = 0.93 1/hr (2)[/tex]

       [tex]f = 0.93 \frac{1}{hr} *\frac{1 hr}{3600sec} = 2.6e-4 = 0.00026 Hz (2)[/tex]

Answer:

hvkhvkhvkvlhvgjvgv

Explanation:

Answer:

The answer is 8m N

Explanation:

When a tennis ball moves 16 meters northward, then 22 meters southward, then 12 meters northward, and finally 32 meters southward. then the distance traveled by it is 82 m and the displacement covered by it is 26 m in a southward direction

An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.

Displacement is a vector quantity. This indicates that it has both a direction and a magnitude and that it is visually represented as an arrow that points from the starting position to the ending position.

Thus, when a tennis ball travels 16 meters to the north, 22 meters to the south, 12 meters to the north, and 32 meters to the south. then it has a covered distance of  82 meters and has covered 26 meters of displacement in a southerly direction.

Learn more about displacement here

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A would land before since its heavier

C) Always measured in terms of distance divided by time.

Answer:

B or D

Explanation:

Answer:

1B, 2B and 3C hope this helps

Explanation:

Answer:

V2 = 1.899*10^-3 m^3

T2 = 347.125 K

Explanation:

Using gas law, we know that

PV = nRT,

Where

V1 = 0.00115743 m^3.

gamma = 1.4

Now, when we solve for final volume, V2 we get

V2 = V1/((P2/P1)^(1/gamma))

V2 = 1.899*10^-3 m^3

Using the same law and method, when we try to solve for the temperature, we find that the final temperature, T2 is

T2 = T1*((V1/V2)^(gamma-1))

T2 = 347.125 K

The final volume is 1.899*10^-3 m^3

And, the final temperature is 347.125 K

here we used gas law,

we know that

PV = nRT,

Here

V1 = 0.00115743 m^3.

gamma = 1.4

Now final volume is

V2 = V1/((P2/P1)^(1/gamma))

V2 = 1.899*10^-3 m^3

Now the final temperature is

T2 = T1*((V1/V2)^(gamma-1))

T2 = 347.125 K

Learn more about volume here: https://brainly.com/question/13011592

Answer:

F = 6[N].

Explanation:

To solve this problem we must use the principle of conservation of linear momentum, which tells us that momentum is conserved before and after applying a force to a body. We must remember that the impulse can be calculated by means of the following equation.

[tex]P=m*v\\or\\P=F*t[/tex]

where:

P = impulse or lineal momentum [kg*m/s]

m = mass = 10 [kg]

v = velocity [m/s]

F = force [N]

t = time = 5 [s]

Now we must be clear that the final linear momentum must be equal to the original linear momentum plus the applied momentum. In this way we can deduce the following equation.

[tex](m_{1}*v_{1})+F*t=(m_{1}*v_{2})[/tex]

where:

m₁ = mass of the object = 10 [kg]

v₁ = velocity of the object before the impulse = 1 [m/s]

v₂ = velocity of the object after the impulse = 4 [m/s]

[tex](10*1)+F*5=10*4\\10+5*F=40\\5*F=40-10\\5*F=30\\F=6[N][/tex]

Answer:

infared radiation

Explanation:

Answer:

1.48 Mpa

Explanation:

Given that For a polymer that was maintained at constant strain, an initial stress of 2.76 MPa decreases to 1.72 MPa after 6 hr. To estimate the stress remaining after 30 hr, we must first find the decay constant by using the exponential equation.

Therefore, the estimate of the stress remaining after 30 hr, is 1.48Mpa.

Please find the attached file for the solution.