The rate of cooling determines ....... and ......

How are reversibility, time, and entropy connected

kondor19780726 [428]

Answer:

As one goes "forward" in time, the second law of thermodynamics says, the entropy of an isolated system can increase, but not decrease. ... Thus, entropy measurement is a way of distinguishing the past from the future.

Explanation:

6 0

3 years ago

How should you approach a dock when the wind or current is pushing you away from the dock?

erastova [34]

Answer:

If the wind is offshore (blowing away from the dock), one should carefully approach the dock at a 20 to 30 degree angle. A bow line is then passed ashore and secured. In boats having an outboard, or inboard/outboard engine, the engine is turned towards the dock and put in reverse. This invariably will bring the stern into the dock.

8 0

3 years ago

Practice Problems

vodomira [7]

(a) The acceleration of the salt shaker is 1.18 m/s².

(b) The distance traveled by the baseball player before coming to rest is 204.1 m.

<h3>Acceleration of the salt shaker</h3>

The acceleration of the salt shaker at the given coefficient of kinetic friction is determined as follows;

a = μg

a = 0.12 x 9.8

a = 1.18 m/s²

Acceleration of the baseball player is calculated as follows;

a = μg

a = 0.4 x 9.8

a = 3.92 m/s²

<h3>Distance traveled by the baseball player</h3>

The distance traveled by the baseball player before coming to rest is calculated as follows;

v² = u² - 2as

0 = 40² - 2(3.92)s

0 = 1600 - 7.84s

7.84s = 1600

s = 204.1 m

The complete question is below:

A baseball player slides into third base with an initial speed of 40 m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

Learn more about coefficient of friction here: brainly.com/question/20241845

8 0

2 years ago

Using the experimentally determined resonant frequency and measured value of the capacitor, find the value of the inductor. 4. d

mafiozo [28]

2.496 HZ is the resistance change the resonant frequency.

Given, Supply frequency, f = 60 12

number of poles, P = 4

Full load speed, Ne= 1725 rpm

Synchronous speed; No= 1201= 120X60 = 1800 rpm

P

4

We know the formula for Full load-speed

Ne = N's (1 - Sf)

where se = full load rotor ship

Ne = 1 - SP

SQ = 1- Ne = 1- 1725 = 0.0416 DY 4-16%

1800

SQ= 4. 16 % or 0.0416

Frequency of rotor, fy= Sgif = (0.0416) ( 60 ) = 2.496 Hz

fr = 2.496 HZ

Learn more about Frequency here: brainly.com/question/16148316

#SPJ4

8 0

1 year ago

A bar of length L = 8 ft and midpoint D is falling so that, when θ = 27°, ∣∣v→D∣∣=18.5 ft/s , and the vertical acceleration of p

777dan777 [17]

Answer:

alpha=53.56rad/s

a=5784rad/s^2

Explanation:

First of all, we have to compute the time in which point D has a velocity of v=23ft/s (v0=0ft/s)

$v=v_0+at\\\\t=\frac{v}{a}=\frac{(23\frac{ft}{s})}{32.17\frac{ft}{s^2}}=0.71s$

Now, we can calculate the angular acceleration (w0=0rad/s)

$\theta=\omega_0t +\frac{1}{2}\alpha t^2\\\alpha=\frac{2\theta}{t^2}$

$\alpha=\frac{27}{(0.71s)^2}=53.56\frac{rad}{s^2}$

with this value we can compute the angular velocity

$\omega=\omega_0+\alpha t\\\omega = (53.56\frac{rad}{s^2})(0.71s)=38.02\frac{rad}{s}$

and the tangential velocity of point B, and then the acceleration of point B:

$v_t=\omega r=(38.02\frac{rad}{s})(4)=152.11\frac{ft}{s}\\a_t=\frac{v_t^2}{r}=\frac{(152.11\frac{ft}{s})^2}{4ft}=5784\frac{rad}{s^2}$

hope this helps!!

6 0

3 years ago

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The rate of cooling determines ....... and ......​

The rate of cooling determines ....... and ......