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3 years ago

what is the change in energy (in J) for a system that lost J of heat to the surrounding, and did 150J of work

Physics

1 answer:

RoseWind [281]3 years ago

5 0

Answer:

Change in energy Δu = 40 J

Explanation:

Given:

System heat ΔQ = 150 J

Missing value of Lost heat ΔW = 110 J

Find:

Change in energy Δu

Computation:

Change in energy Δu = System heat ΔQ - Missing value of Lost heat ΔW

Change in energy Δu = 150 - 110

Change in energy Δu = 40 J

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Ostrovityanka [42]

Answer:

9.5%

Explanation:

Missing information :

In this question there is incorrect question .The correct question is

$x\ =\frac{ab^{2} }{\sqrt{c} }$

Given :

$x\ =\ \frac{ab^{2} }{\sqrt{c} }$

From the propagation of error property

$$\Delta$x = $\Delta$a + 2$\Delta$b + 1$\Delta$c\\\ \ \ x = \ \ a + \ \ \ \ b + \ \ \ \ c \\$ ----------------------Eq(1)

Putting the respective value 4,2 and 3 in the Eq(1) we get

This gives

$percentage \ error \ = 4\ +\ 2*2\ +\ \frac{3}{2}\\ percentage \ error \ = 4+4+\frac{3}{2} \\percentage \ error \ = 8+\frac{3}{2}\\ percentage \ error \ = 8+1.5\\percentage \ error \ = 9.5\\Therefore \ 9.5\%$

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3 years ago

The Sun is a type G2 star. Type G stars (from G0 to G9) have a range of temperatures from 5200 to 5900. What is the range of log

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Answer:

Explanation:

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3 years ago

The mass of a sports car is 1000 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.260 and the frontal

alisha [4.7K]

Answer:

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Explanation:

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3 years ago

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Zina [86]

Answer:

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Explanation:

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2 years ago

a wave is described by where x is in meters, y is in centimeters and t is in seconds. The angular frequency is

Sergeeva-Olga [200]

Complete Question

A wave is described by y(x,t) = 0.1 sin(3x + 10t), where x is in meters, y is in centimetres and t is in seconds. The angular wave frequency is

Answer:

The value is $w = 10 \ rad /s$

Explanation:

From the question we are told that

The equation describing the wave is y(x,t) = 0.1 sin(3x + 10t)

Generally the sinusoidal equation representing the motion of a wave is mathematically represented as

$y(x,t) = Asin(kx + wt )$

Where w is the angular frequency

Now comparing this equation with that given we see that

$w = 10 \ rad /s$

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3 years ago