Tag: Psychology

The pressure on a block of copper weighing 1 kg is increased reversibly to 100 atm at 15°C. Calculate Cp – CV for this process. Given a = 5 × 10–5 K–1, bT = 8.6 × 10–12 m2 N–1 and V = 0.000114 m3 .

The equation of state of an ideal elastic substance is
where k is a constant and L0 (the value of L at zero tension) is a function of temperature only. Derive an expression for the work required to change the length from L0 to L0/3 quasistatistically and isothermally.

The equation of state of an ideal elastic substance is T =
where T is the tension and θ the temperature. k is a constant and L0 (the value of L at zero tension) is a function of temperature only. Show that the isothermal Young’s modulus is given by Y
and that its value at zero tension is given
, where A is the cross-sectional area of the wire.

1)Which terms are kept constant in Charles’s Law?
(A) temperature and volume (B) moles and temperature (C) temperature and pressure (D) pressure and moles
Guy-Lussac’s Law.

2. Pressure and temperature are shown to be directly proportional. That means if the pressure is increased, the temperature would:
(A) increase (B) decrease (C) remain constant (D) equal zero

Dealing with parents
. You are conducting a self-exploration group with children in a family clinic. The father of one of the children in your group meets with you to find out how his child is doing. What do you tell him? What do you not tell him? Would you inclined to meet with the father and the child?

A paramagnetic salt that obeys Curie’s law is situated in a magnetic field H at temperature T. Show that the heat capacity of a volume V of the material at constant H is given by CH = μ0 CVH2/T2, where C is the Curie constant. Obtain an expression for the entropy change in a constant H cooling process.

A mixer is implemented as shown in the figure. The resistor Ro= 2K, kn= 2mA/V2, Vop=10V, Vi=1V. The MOSFET is placed in saturation mode by a DC bias voltage of 2V. If two signals, VRE=0.9coswt and Vlo=1.1 coswat (both VRF and Vlo are in Volts) are applied to the input of this simple mixer, What is the amplitude of the intermodulation signal (in V) at the frequency, W1-W2, at the drain of the MOSFET? Approximate your answer to two decimal points. Ignore the sign.

Highlight the dimensions on ethics and discuss in detail how it should be applied in real life senarial under ethics and integrity

A full wave center – tapped transformer rectifier in a power supply provides an average dc output voltage of 14V on which a maximum ripple of plus minus 0.5 volt is allowed. Diodes have a 0.7 Volt drop when conducting. Assuming a resistive load of 120 ohm, a line voltage of 120V rms @ 60Hz through a transformer,
Sketch the circuit diagram for the rectifier
What is the rms voltage across the transformer secondary?
Determine the size of filter capacitor required
Assuming 50% safety margin, what diode PIV rating is appropriate?

Which of the following is true of operational definitions?
O Popular press descriptions of research usually refer to the operational definitions.
·
Some psychological concepts cannot be operationally defined.
·
Conceptual definition and operational definition mean the same thing.
·
Operational definitions answer the question “Why did the researchers measure this variable?”
·
Some psychological concepts are more difficult to operationally define than others.