Physics Homework Solutions

circuits check attachment

Demonstralte by analysing the circuit that the inverse of a function can be generated by placing the function in the feedback loop of the op-amp. In the diagram, a logarithmic amplifier has been placed in the feedback loop. The output of the log amplifier is Vb=log(Va). complete question with pic in attached doc file

Prove that the R-2R ladder network shown in the diagram has an output Vo of 2.5V

Prove that the R-2R ladder network shown in the diagram has an output Vo of 2.5V see attachment for pic

Prove that the circuit will give a weighted sum of the two voltages V1 and V2.

Prove that the circuit will give a weighted sum of the two voltages V1 and V2.

Finding a Spring Constant

Assuming negligible friction, what spring constant would be needed by the spring in a "b-b gun" to fire a 10g pellet to a height of 100m if the spring is initially compressed 10cm?

Work Done

A 70 kg cart is pushed 50m with a constant velocity upon a 45degree frictionless incline. fid the work done on the cart(assume 10 m/s^2 gor gravity). Express in scientific notation and in joules.

logic families

what are different logic families w.r.t. logic gates?

a temperature

a temperature of -162 degrees C corresponds to a. 111k b. -111k c. -162k d. 162k

if x= a + bt + ct^2

if x= a + bt + ct^2, where x is in meters and t is in seconds the unit of C is a. m/s^2 b. m/s c. m d. 1/s^2

the coordinates of three

the coordinates of three particles are (5,7), (0,3) and (-1,-1). if the three particles have masses of 1.0 kg, 2.0 kg and 2.0 kg respectively, find the coordinates of the center of mass. a.(-0.6,2.2) b. (0.6, 2.2) c. (-0.6, -2.2) d. (0.6, -2.2)

Electric Circuits

1) For the circuit below find: a) The current through R1. b) The current through R2. c) The current at the ammeter. See attached file for full problem description.

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