## What is the overall rate at which energy is emitted from the sun in all directions?

the sun emits energy continuously into the universe. the fraction of this energy flux intercepted by the earth is 1.75 x 1011 MW. the earth-sun distance is about 1.5 x 10 8 km, and the earth’s radius is about 6370 km. the radius of the sun is about 696,000 km and its density is about 1.4 kg/m3 .

(a) What is the overall rate at which energy is emitted from the sun in all directions?

(b)  At what rate (in metric tons per second) is the sun losing mass?

(c) In how many years will the sun lose 1/10,000 of its mass due to its continuous energy emission?

### Calculate the maximum achievable bridge out-of-balance voltage for an applied torque T of 103 N m given the following

Four strain gauges, with specification given below, are available to measure the torque on a cylindrical shaft 4 cm in diameter connecting a motor and load. (a) Draw clearly labelled….

### Find the gain and phase characteristics of the maintaining amplifier.

A solid-state capacitive humidity sensor has a capacitance given by: C = 1.7 RH + 365pF where RH is the percentage relative humidity. The sensor has an associated parallel resistance….

### calculate the mean velocity of the gas at maximum flow rate

A pitot tube is used to measure the mean velocity of high pressure gas in a 0.15 m diameter pipe. At maximum flow rate the mean pitot differential pressure is….