Physics Answers

Force between two point charges: Two point charges,

and , are separated by a distance

(Refer to the figure below). Find the magnitude

and direction of the electric force (a) that exerts on and (b)

that exerts on .

A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volume being 0.05^m3. Calculate the work done by the fluid when it expands reversibly according to linear law to a final volume of 0.2m^3 and a final pressure of 2 bars.

The viscosity of a fluid is to be measured by a viscometer constructed of two 3m long concentric cylinders.the inner diameter of the outer cylinder is 35cm, and the gap between the two cylinders is 0.14cm.the outer cylinder is rotated at 250rpm. and the torque is measured to be 1.8N determine the viscosity of the fluid

Determine the precision of these two approximate values

a) 32000.Tons

b) 1.20×10(--5)ms

How many S.D are indicated by each of these approximate values?

a) 32000.tons

b) 1.20×10(--5)ms

A platform diver has a kinetic energy of 12,000 n x m prior to landing in the water bucket. If her mass is 40 kg, what is her final velocity before splash?

A hiker travels 4,5 km in a direction 12 degrees south of west and then 7,2 km in a direction 23 degrees west of south.

Determine the hiker’s overall displacement.

Draw each of the hiker’s individual displacement vectors on the same set of Cartesian axes, so that their initial points coincide at

the origin:

:Determine the components of each of these vectors; then use them to find the resultant/overall displacement:

a 200iC charge flows through conductor. if the p.d between its ends is 40mv, find the work done

Explain snell law

What is momentum