Flossie blew a tire 5 minutes into the second leg, up to that point she had traveled 10 km making her speed 2 km/m. It took 2 minutes to fix her tire. Flossie had to finish within 2 minutes in order to stay even with the evil Mabel. If Flossie had 8 km left what speed will she need to win?

The power dissipated in the resistor will be 16,440 watts when the current will be 13700 ma going through 1.2 k ohm .

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A. The knowns in this problem are initial velocity, final velocity and acceleration due to gravity on the dolphin.

B. The calculated height the dolphin rises is not reasonable.

C. The time the dolphin stays in the air is calculated to be 1.48 s.

A. The initial velocity of the dolphin is given as vi = 14.5 m/s

The final velocity of the dolphin is zero.

As the dolphin jumps upwards, the gravity acting is considered negative

So, g = -9.8 m/s²

B. According to kinematics, we know the equation,

v² - u² = 2 a s

The height raised by the body of the dolphin is,

s = (v² - u²)/2a = -14.5²/(2× -9.8) = 10.73 m

The answer does not seem reasonable as it is approximately equal to three-storeyed building.

C. The time dolphin stays in the air is given by the equation,

v = u + a t

Here, a = -g

v - u = -g t

t = -(v - u)/g = -(0-14.5)/9.8 = 14.5/9.8 = 1.48 s.

The given question is incomplete. The complete question is 'A dolphin in an aquatic show jumps straight up out of the water at a velocity of 14.5 m/s.(a) List the knowns in this problem. (b) How high does his body rise above the water? To solve this part, first note that the final velocity is now a known, and identify its value. Then, identify the unknown and discuss how you chose the appropriate equation to solve for it. After choosing the equation, show your steps in solving for the unknown, checking units, and discuss whether the answer is reasonable. (c) How long a time is the dolphin in the air? Neglect any effects resulting from his size or orientation.'

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The vector B has a magnitude of 25 m and makes an angle of -30 degrees with the +x-axis.

A vector is a mathematical object that has both magnitude and direction. It can represent physical quantities such as force, velocity, and acceleration, as well as abstract concepts such as direction and space. Vectors are often used to represent the change in position or movement of an object over time, or to represent the relationship between two or more points. Vectors can also be used to describe the shape of an object, as well as the relationships between objects.

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Answer:

add the Resistance

2(100)= 200

2) 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be 200 ohms

When two or more resistors are connected end to end consecutively , they are said to be connected in series combination .Total resistance in  series combination is calculated as the algebraic sum of individual resistances

General formula = R (equivalent ) = R1 + R2 + R3 + .......

let R1 = 100 ohms

R2 = 100 ohms

R(equivalent resistance in series combination )= R1 + R2

R = 100 + 100

R = 200 ohms

If two 100 ohms resistors are placed in series, their total resistance will be b) 200 ohms

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Answer: it is turned into thermal energy

C. it is transformed into thermal energy

The minimum force (Fmin) required to move the block up the ramp is 12.7 N.

Mass of the block (m) = 3.3 kg

Angle of the ramp (θ) = 37°

Coefficient of friction between the block and the ramp (μg) = 0.44

Coefficient of kinetic friction between the block and the ramp (uk) = 0.30

Step 1: Resolve the forces acting on the block.

The weight of the block (mg) can be resolved into two components:

- The force acting parallel to the incline (mg*sinθ)

- The force acting perpendicular to the incline (mg*cosθ)

Step 2: Calculate the force of friction.

The force of friction can be calculated using the equation:

Force of friction (Ff) = μg * (mg*cosθ)

Step 3: Determine the minimum force required.

To move the block up the ramp, the applied force (Fapplied) must overcome the force of friction.

Thus, the minimum force required (Fmin) is given by:

Fmin = Ff + Fapplied

Step 4: Substitute the given values and calculate.

Ff = μg * (mg*cosθ)

Fmin = Ff + Fapplied

Now, let's calculate the values:

Ff = 0.44 * (3.3 kg * 9.8 m/s² * cos(37°))

Ff ≈ 12.717 N

Fmin = 12.717 N + Fapplied

Therefore, the minimum force (Fmin) required to move the block up the ramp is approximately 12.7 N.

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I believe its 31m/s^2

Explanation:

vf-vi/t

85-23/2

85-23=62

62/2=31

31m/s^2

Answer:

force, displacement & cause.

Explanation:

there must be a displacement and the force must cause the displacement.

i hope this helps you ahh

The effective access time for the system is 5.95 units of time.

Calculate the effective access time for the system with a given cache hit ratio, we can use the concept of the "average memory access time" (AMAT).

The AMAT takes into account the time required for both cache access and RAM access, weighted by their respective hit and miss probabilities.

Cache access time: 1 unit of time (since cache access is 100 times faster than RAM access)

RAM access time: 100 units of time

Cache hit ratio: 95% (or 0.95)

Calculate the effective access time (EAT), we can use the following formula:

EAT = (cache hit time) + (cache miss time * miss ratio)

Cache hit time = cache access time = 1 unit of time

Cache miss time = RAM access time = 100 units of time

Miss ratio = 1 - cache hit ratio = 1 - 0.95 = 0.05

Plugging in the values, we get:

EAT = (1 * 0.95) + (100 * 0.05) = 0.95 + 5 = 5.95 units of time

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Answer: Water has 10 times the specific heat capacity compared to iron. How much water would be needed to absorb the same amount of heat as a piece of iron?

Explanation:

The answer is: 1/10th the mass of iron.

So sorry about that other clown above me, that point farming clown needs to gtfo off the internet.

The frequency of the electromagnetic wave with a wavelength of 6000 m and a speed of 3 x 10^10 cm/s is 5 x 10^4 Hz.

To find the frequency of an electromagnetic wave, we can use the equation:

v = λf

where:

v is the speed of the wave,

λ is the wavelength of the wave, and

f is the frequency of the wave.

Given:

λ = 6000 m

v = 3 x 10^10 cm/s

First, let's convert the speed from cm/s to m/s:

v = 3 x 10^10 cm/s * (1 m / 100 cm) = 3 x 10^8 m/s

Now we can rearrange the equation to solve for the frequency:

Substituting the given values:

f = (3 x 10^8 m/s) / (6000 m)

Simplifying the expression, we find:

f = 5 x 10^4 Hz

Therefore, the frequency of the electromagnetic wave with a wavelength of 6000 m and a speed of 3 x 10^10 cm/s is 5 x 10^4 Hz.

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Answer:

c) It has more nitrogen than oxygen.

Explanation:

Our Earth’s atmosphere has more nitrogen (78%) than oxygen (21%). Hence, the option (c) is the correct answer.

Answer:

C. It has more nitrogen than oxygen.

Explanation:

Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere).

When waves spread out when they pass through a hole or past the edge of a barrier, this is called diffraction.

An interruption that moves momentum and energy from one place in a medium to another is known as a wave. For instance, we can observe the movement of the wave crest from one side to the other in a specific amount of time as an ocean wave moves in medium water.

Most often, wind is what produces waves. The rubbing together of wind and surface water produces wind-driven waves, also known as surface waves. A wave crest is produced when wind continuously disturbs the ocean or lake's surface while it blows across it.

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Answer:

cT

Explanation:

Said

Skyhawks

Shawnee

sustained

The starting of a snowboarder's motion is explained by Newton's third law of motion.

According to this law, every action has an equal and opposite reaction. Thus, forces always operate in pairs.

The first object exerts force, which is the person's foot pushing against the ground. The snowboarder then experiences a pushback from the ground as a result of the equal and opposite reaction force on the foot. The ground's reaction propels the person forward. Always of equal magnitude to the action force, the response force acts in the opposite direction.

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La expresión del movimiento armónico simple permite encontrar los resultados para las preguntas sobre el movimiento de la masa y el resorte son:  

     a) La fase inicial es cero y la amplitud es 0,05 m

     b)  La elongación y velocidad para el tiempo dado son:

          x =  -0,0445 m y  v = -0,0229 m/s

      c) La velocidad angular es:        w = 19,8 rad/s

      d) El  periodo vale   T = 0,317 s

      e) La constante de resorte es:      k = 196 N/m

      f)  La velocidad máximas es:     v= 0,99 m/s

     g) La energia potencial es:       Ep = 0,245 J

     h) La energía cinética es:     K = 0,2058 J

      i) La aceleración es:  a = -4,61 m/s²

      j) La velocidad es:  v= -0,806 m/s

El movimiento oscilatorio ocurre cuando hay un fuerza recuperadora en el sistema, si tea fuerza es proporcional al desplazamiento el movimiento se denomina armónico simple y es descrito por la expresión.

                       x= A cos (wt +Ф)

                       w² = k/m

Donde x es el desplazamiento, A la amplitud del movimiento, w la velocidad angular, t el tiempo, fi una constante de fase que se determina con los valores iniciales, k la constante del resorte y m la masa.

e) Indican el desplazamiento de x= 5 cm = 0,05 m para una masa de m= 1000 g = 1 kg.  Usemos la condición de equilibrio y la ley de Hooke para encontrar la constante del resorte.

                 W = F

                mg = k x

                 \(k = \frac{mg}{x}\)

Calculemos.

                 k = \(\frac{1 \ 19.8}{0.05}\)  

                 k = 196 N/m

c) indican la masa aplicada para el movimiento es m= 0,5 kg , podemos buscar la velocidad angular

                  w= \(\sqrt{ \frac{k}{m}}\)

                  w = \(\sqrt{ \frac{196}{0.5} }\)  

                  w = 19,8 rad/s

a) La fase y la mplitud.

La amplitud es la elongación máxima del movimiento  

            A = 0,05 m

para la fase usamos que el bloque se suelta, por lo cual el tiempo es cero t=0 ,desde la posición de máxima elongación v= 0, usemos la relación entre la posición y la velocidad.

            v= \(\frac{dx}{dt}\)

            v = -A w sin (wt +Ф)

            0 = - A w sin Ф

Por lo tanto fi debe ser cero, para que la función seno ea cero.

            Ф =0

b) Calculamos para t=0,5 s la elongación y la velocidad.

La ecuación del movimiento queda.

              x = A cos wt

Calculamos.

Recuerda que los ángulos están en radianes.

                x = 0,05 cos 19,8 0,5

                x =  -0,0445 m

La velocidad es:

                v = 0,05 19,8 sin 19,8 0,05

                v = -0,0229 m/s

d) La velocidad angular esta relacionada con el periodo.

            W = \(\frac{2\pi}{T}\)  

            T = \(\frac{2\pi}{w}\)  

             T = \(\frac{2\pi}{19.8}\)2pi/19,8

             T = 0,317 s

f) El valor máximo de la velocidad.

Este valor ocurre cuando la función seno vale 1

             v =Aw

             v= 0,05 19,8

              v= 0,99 m/s

g) La energía mecánica del sistema se mantiene constante porque no hay fuerzas de roce, por lo tanto en el punto de máxima elongación la energía es totalmente potencial.

             U = ½ k A²  

              U = ½ 196 0,05²  

             U = 0,245 J

h) la energía cinética para x=2 cm = 0,02 m

En todos los puntos la energía mecánica es la suma dela energía cinética mas la enriar potencial

            Em₀ = K + U

            K = Em₀ – U

            K = ½ k ( A² -x² )

            K = ½ 196 ( 0,05² – 0,02² )

            K = 0,2058 J

i)  La aceleracion y la velocidad están relacionadas

              a = \(\frac{dv}{dt}\)  

              a = - A w² cos wt

             a = - 0,05 19,8² cos 19,8t

              a = -19,6 cos 19,8 t

              a = - 19,8cos 19,8 0,25

              a = -4,61 m/s²  

j) La velocidad para t=1 s.

             v= - A w sin wt

             v = - 0,05 19,8 sin 19,8 1

             v= -0,806 m/s

En conclusión con la expresión del movimiento armónico simple podemos encontrar los resultados para las preguntas sobre el movimiento de la masa y el resorte son:

    a) La fase inicial es cero y la amplitud es 0,05 m

     b)  La elongación y velocidad para el tiempo dado son:

          x =  -0,0445 m y  v = -0,0229 m/s

      c) La velocidad angular es:        w = 19,8 rad/s

      d) El  periodo vale   T = 0,317 s

      e) La constante de resorte es:      k = 196 N/m

      f)  La velocidad máximas es:     v= 0,99 m/s

     g) La energia potencial es:       Ep = 0,245 J

     h) La energía cinética es:     K = 0,2058 J

      i) La aceleración es:  a = -4,61 m/s²

      j) La velocidad es:  v= -0,806 m/s

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Answer:

V=2.8 ml

Explanation:

volume of the cube is it would be 20.3 - 17.5 ml so 2.8 ml.

You would need to descend deeper than half the wavelength of the waves in order to be in water that would not be noticeably impacted by surface waves with a length of 5 meters.

Since the wavelength in this situation is 5 meters, diving to a depth of at least 2.5 meters would lessen the effect of surface waves. Because wave energy decreases with depth, surface disturbances have less of an impact on the water the deeper you go. Complete stillness is difficult to obtain in natural water bodies, it's crucial to remember that other elements like currents, tides, and undersea topography can still induce water movement even at higher depths.

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Answer:

\(\boxed {\boxed {\sf 157.5 \ Joules }}\)

Explanation:

Work is equal to the product of force and distance.

\(W=F*d\)

The box is being pushed with an effort (force) of 45 Newtons and the distance is 3.5 meters.

\(F= 45 \ N \\d= 3.5 \ m\)

Substitute the values into the formula.

\(W= 45 \ N * 3.5 \ m\)

Multiply.

\(W= 157.5 \ N*m\)

\(W= 157.5 \ J\)

157.5 Joules of work are done on the crate.

Answer:

8 million miles

Explanation:

believe me

Answer:

density is the correct answer

Explanation:

The estimated age of the solar system is 4558 million years,

with N = 4.558.

The exponent n is a number that represents the power to which the base number is raised.

The exponential function is represented as xn, where x is the base and n is the exponent.

The question seeks to determine the value of n given N and the estimated age of the solar system.

The formula for calculating the value of n is:

N = 10n
Taking the logarithm of both sides, we get:
log(N) = log(10n)
Using the rule of logarithm, log(a^b) = b log(a), we can rewrite the equation as:
log(N) = n log(10)

Since log(10) = 1, we have:
n = log(N)

Substituting N with the estimated age of the solar system, we get:
n = log(4.558)

Using a calculator, we find that log(4.558) is approximately 0.6609.

the value of the exponent, n, is approximately 0.6609.

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Answer:

it might be b maybe

Explanation:

The kinematics to find the time to go from the office to the living room is: 2.81 s

Given Parameters

To find

Kinematics allows us to find the relationships between the position, velocity and acceleration of bodies, let's use the relationship  

             x = v₀ t + ½ a t²

Where x is the position, v₀ the initial velocity, at acceleration and t the time

In this case, as he leaves the office, the initial velocity is zero.

           x = ½ a t²

            t = \(\sqrt{\frac{2x}{a} }\)

Let's calculate

           t = \(\sqrt{\frac{2 \ 125}{4} }\)

          t = 2.81 s

In conclusion, using the kinematics, we find that the time to go from the office to the classroom is: 2.81 s

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Answer:

When molecules, not just rubber molecules, but any molecules, form crystals, they give off heat. This is why the rubber band feels hot when its stretched. When you let go of the rubber band, the polymer molecules break out of those crystals. Whenever molecules break out of crystals, they absorb heat.

Explanation:

When a rubber band is stretched, its polymeric molecules, consisting of chains of many subunits, become elongated and aligned. This stretching process increases the entropy or disorder within the rubber band as it converts potential energy into kinetic energy.

The energy required for this deformation comes from the work done by the person stretching the rubber band.

As the rubber band is stretched repeatedly, the internal molecular friction generates heat. The kinetic energy from the rapid realignment of the polymer chains is converted into thermal energy, causing the rubber band to feel warm. This phenomenon is known as hysteresis heating, a result of the viscoelastic nature of rubber materials.

Viscoelastic materials exhibit both viscous and elastic properties when undergoing deformation. The elastic component allows the rubber band to return to its original shape after being stretched, while the viscous component dissipates some of the applied energy as heat, resisting the rapid change in shape.

In summary, when a rubber band is repeatedly stretched, its polymeric molecules experience an increase in entropy due to the conversion of potential energy into kinetic energy. This, combined with the viscoelastic properties of the material, generates internal molecular friction, ultimately causing the rubber band to warm up through a process known as hysteresis heating.

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The focal length of the lens is 100 cm.

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Answer:

A stronger force changes increases velocity more due to increased acceleration on the object if the mass is constant as compared to a weaker force.

Explanation:

Force affects how objects behave in terms of motion, direction, shape etc. When an object is in a state of rest, then force is applied, the object starts to move is a particular direction. Increase in the force applied will make the object to speed up which is to say the velocity will increase.

For example:

When a ball is kicked with a player with a force of 10 N the velocity of the ball is recorded to be 3 m/s. When the player is replaced with a kid the force on the ball is 2 N and its velocity is recorded to be 0.3 m/s.

Reasoning

Increased in force applied on an object increases its acceleration resulting to a higher velocity of the object.

F= m * a --------if  mass is constant , increased force will increase acceleration and speed up the object.