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4 years ago

14

¿que es la energia interna?

2 answers:

solong [7]4 years ago

6 0

La energía interna es el resultado de la contribución de la energía cinética

Vladimir [108]4 years ago

4 0

Answer:

La energía interna es el resultado de la contribución de la energía cinética de las moléculas o átomos que lo constituyen, de sus energías de rotación, traslación y vibración, además de la energía potencial intermolecular debida a las fuerzas de tipo gravitatorio, electromagnético y nuclear.

Explanation:

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The net force acting on an object in the horizontal direction is 25 newtons, and the force acting in the vertical direction is 1

Zina [86]

The angle is found by taking the arctangent of the vertical angle divided by the horizontal angle
θ = arctan(18/25) = 35.75°
36° is the closest answer.

4 0

3 years ago

Lonnie pitches a baseball of mass 0.500 kg. The ball arrives at home plate with a speed of 35.0 m/s and is batted straight back

Andreyy89

Answer:

Explanation:

The impulse equation is

Δp = FΔt, where Δp = final momentum - initial momentum, F is the Force exerted on an object, and Δt is the change in time. In this equation,the entire right side defines the impulse. In other words, FΔt is the impulse; thus the change in momentum an object experiences is due to its change in impulse and is directly proportional to it.

Therefore, once we find the change in momentum, that is the impulse the object experiences. Δp = final momentum - initial momentum, where

p = mv and p is momentum.

$p_f=(.500)(50.0)$ so

$p_f=25.0$ and

$p_i=(.500)(35.0)$ so

$p_i=17.5$ ; therefore,

Δp = 25.0 - 17.5 = 7.5 $\frac{kg*m}{s}$ which is the unit for momentum

7 0

3 years ago

A _____ tells you what the different symbols and lines represent on a map.

Nesterboy [21]

The answer will be legend

6 0

3 years ago

Read 2 more answers

lisov135 [29]

Answer:

a. Power = 1000 Watts or 1 Kilowatts.

b. Current = 4 Amperes.

Explanation:

Given the following data;

Energy consumed = 1.8MJ = 1.8 × 10^6 = 1800000 Joules

Voltage = 250V

Time = 30 minutes to seconds = 30 * 60 = 1800 seconds

To find the power rating;

Power = energy/time

Substituting into the equation, we have;

Power = 1800000/1800

Power = 1000 Watts or 1 Kilowatts.

b. To find the current taken from the supply;

Power = current * voltage

1000 = current * 250

Current = 1000/250

Current = 4 Amperes.

8 0

3 years ago

Early in the morning, when the temperature is 4.5 ∘C, gasoline is pumped into a car's 53-L steel gas tank until it is filled to

Lynna [10]

Answer:

$\Delta V=1.0911\ L$

Explanation:

Given:

Initial temperature, $T_i=4.5^{\circ}C$

initial volume, $V_i=53\ L$

final temperature, $T_f=27^{\circ}C$

volumetric coefficient of thermal expansion for gasoline, $\beta_g=950\times 10^{-6}\ K^{-1}$

volumetric coefficient of thermal expansion for steel, $\beta_s=35\times 10^{-6}\ K^{-1}$

<u>Now the increment in the volume of the container:</u>

$\Delta V_s=V_i.\beta_s.\Delta T$

$\Delta V_s=53\times 35\times 10^{-6}\times (27-4.5)$

$\Delta V_s=41737.5\times 10^{-6}\ L$

<u>and the increment in the volume of the gasoline:</u>

$\Delta V_g=V_i.\beta_g.\Delta T$

$\Delta V_g=53\times 950\times 10^{-6}\times (27-4.5)$

$\Delta V_g=1132875\times 10^{-6}\ L$

<u>Hence the difference in the increment of the two volumes:</u>

$\Delta V=\Delta V_g-\Delta V_s$

$\Delta V=(1132875-41737.5)\times 10^{-6}$

$\Delta V=1.0911\ L$ of the gasoline spills out of the container in this case.

3 0

3 years ago