Physics Answers

Calculate the solar angle for the day at 10am and 2pm individually for the location of

21.23 south latitude on the 18th march 1993 (Assume it is non leap year)

The central deflection of the diaphragm of an elastic type pressure measuring instrument was

found to be 0.25mm of an applied pressure of 106𝑝𝑎. The output displacement of diaphragm

has been fed to a Linear variable differential transducer (LVDT) with a built in amplifier

having a sensitivity of 40V/mm. Finally the output is displayed on an analog voltmeter which

has a radius of scale line as 60mm and has a voltage range from zero to 10 volts in an arc of

1500. Using a well labelled diagram, determine the sensitivity of the given diaphragm gauge

in terms of mm/bar (1 bar=105𝑝𝑎).

A bicyclist encounters a series of hills.uphill speed is always V1 downward speed is always V2. The total distance he travelled is X.with uphill and down hill portions of equal length.what was the cyclist average speed?

A boy travelled 240km with constant speed except for 30min cokkee break after he has been on the road for 1.5hr .the trip including the break takes him 2hr and 30min.what was his average spped?

Relate the questions to the concepts of Resistors in Series and in Parallel

What happens to the headlights of a car if it had been accidentally smashed to a light post resulting to the breakage of the right portion of its headlight?

A satellite orbiting the Earth at 400 km above the surface of the Earth has a 2 m long antenna oriented perpendicular to the Earth's surface. At the equator the Earth's magnetic field is 8×10−5 T and is horizontal. Assuming the orbit to the circular, find emf induced across the ends of the antenna.(Given radius of earth Re ​=6400 Km)

A sled is pulled from rest by a net force of 2.8 N [forward]. The sled moves 7.4 m, reaching a velocity of 3.9  m/s [forward]. Determine the mass of the sled.

Charges are equal and opposite on two parallel plates. When space was evacuated, the electric field was 2.80 x 105 V/m. When it was filled with a dielectric material, the electric field was 1.20x105 V/m. What is the dielectric constant? What is the material?

An electromotive force of a cell is .8 5 V and is connected to a load of 4.25Omega , the voltage drops to 2.0 V. Find the current and internal resistance of the cell.

A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when connected to 3.5 V source?