Physics Answers

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity.

Calculate the acceleration of josh riding his bicycle in a straight line that speeds up from 4m/s to 6m/s in 5 seconds

A heart engine takes in 320 j of energy from a hot reservoir and performs 25.0 J of work in each cycle.find

(I). The efficiency of the engine and

(ii). The energy expelled to the cold reservoir in each cycle.

the critical angle at an air liquid interface is 50°. calculate the refractive index of the liquid

The power rating of a water pump is 4200 watts, if it is run for 600s, how many joules of work will it do in that time?

Calculate the electric field due to a charge of 35uc when it experiences an electrostatic force of 2×10^3N when placed in a vacuum.

An oil (specific gravity = 0.75) with a depth of 10 m has a barometric reading of

755 mmHg. Calculate the absolute pressure in kPa

10. A 1500 kg yellow convertible is travelling south, and a 2000 kg red station wagon is travelling west. If the total momentum is of the system consisting of the two cars is 8000 kg.m/s directed at 30° west of south, what is the speed of each car?

The pressure below the depth of 25 m of a homogenous fluid is 50.473 psi.

Calculate specific weight in kN/m3,density of fluid in kgm/m3 and its specific

gravity.

The surface of the Sun has a temperature of about 5800 K. The radius of the Sun is 6.96 x 108 m. Calculate the total energy radiated by the Sun each second. Assume the emissivity of the Sun is 0.965