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Fantom [35]
3 years ago
9

When nondeterminism results from multiple threads attempting to access a shared resource such as a shared variable or a shared f

ile, at least one of the accesses is an update, and the accesses can result in an error, we have a race condition.
a) True
b) False
Engineering
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

a) True

Explanation:

In Computer programming, when a multiple thread is executing, the sequence in which the statements (codes) contained therein are executed by these multiple thread is mainly nondeterministic in nature.

When nondeterminism results from multiple threads attempting to access a shared resource such as a shared variable or a shared file, at least one of the accesses is an update, and the accesses can result in an error, we have a race condition.

A race condition can be defined as a condition in which multiple threads have the ability to access shared data at the same time and as such they both try to change (modify) the data. Thus, in a race condition occurs in computer (software) programming when a software application's behavior is solely dependent on the timing of multiple threads (processes) in order to function properly.

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A cylindrical hot water storage tank (see sketch) for a set of collectors is located in the basement of a dwelling. The tank is
Galina-37 [17]

Answer:

See explanations

Explanation:

Given Data, The diameter of the Tank (D) = 2 ft.

Height of the Tank (H) = 4.5 ft.

Inside temperature of Tank (T1) = 120° F Outside temperature (T2) = 65° F The thickness of Steel (s1) = 0.080" = 0.00666667 ft. Thickness of fiberglass

8 0
3 years ago
Which list ranks these jobs in the STEM career cluster based on the years of schooling required, from the most to least?
shutvik [7]

Answer:

yes it's C

Explanation:

3 0
3 years ago
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Consider a steam turbine, with inflow at 500oC and 7.9 MPa. The machine has a total-to-static efficiency ofηts=0.91, and the pre
sergiy2304 [10]

Answer: \dot m_{in} = 23.942 \frac{kg}{s}, \dot H_{out} = 39632.62 kW

Explanation:

Since there is no information related to volume flow to and from turbine, let is assume that volume flow at inlet equals to \dot V = 1 \frac{m^{3}}{s}. Turbine is a steady-flow system modelled by using Principle of Mass Conservation and First Law of Thermodynamics:

Principle of Mass Conservation

\dot m_{in} - \dot m_{out} = 0

First Law of Thermodynamics

- \dot W_{out} + \eta\cdot (\dot m_{in} \dot h_{in} - \dot m_{out} \dot h_{out}) = 0

This 2 x 2 System can be reduced into one equation as follows:

-\dot W_{out} + \eta \cdot \dot m \cdot ( h_{in}- h_{out})=0

The water goes to the turbine as Superheated steam and goes out as saturated vapor or a liquid-vapor mix. Specific volume and specific enthalpy at inflow are required to determine specific enthalpy at outflow and mass flow rate, respectively. Property tables are a practical form to get information:

Inflow (Superheated Steam)

\nu_{in} = 0.041767 \frac{m^{3}}{kg} \\h_{in} = 3399.5 \frac{kJ}{kg}

The mass flow rate can be calculated by using this expression:

\dot m_{in} =\frac{\dot V_{in}}{\nu_{in}}

\dot m_{in} = 23.942 \frac{kg}{s}

Afterwards, the specific enthalpy at outflow is determined by isolating it from energy balance:

h_{out} =h_{in}-\frac{\dot W_{out}}{\eta \cdot \dot m}

h_{out} = 1655.36 \frac{kJ}{kg}

The enthalpy rate at outflow is:

\dot H_{out} = \dot m \cdot h_{out}

\dot H_{out} = 39632.62 kW

3 0
3 years ago
Find the dy/dx using implicit differentiation
irina [24]

Answer:

dy/dx = (1 − 2x + 8y) / (4 + 3x − 12y)

Explanation:

d/dx (x − 4y) = d/dx (e^(2x + 3y − 1))

1 − 4 dy/dx = e^(2x + 3y − 1) (2 + 3 dy/dx)

Since x − 4y = e^(2x + 3y − 1):

1 − 4 dy/dx = (x − 4y) (2 + 3 dy/dx)

1 − 4 dy/dx = 2 (x − 4y) + 3 (x − 4y) dy/dx

1 − 4 dy/dx = 2x − 8y + (3x − 12y) dy/dx

1 − 2x + 8y = (4 + 3x − 12y) dy/dx

dy/dx = (1 − 2x + 8y) / (4 + 3x − 12y)

6 0
3 years ago
On the position time curve, if the slope of a tangent at a point is positive, that means:
Gnoma [55]

Answer:

  C. the object is moving forward

Explanation:

A positive slope means position is increasing when time is increasing. Generally, increasing position is "moving forward."

7 0
3 years ago
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