1. If the sun which is 93,000,000 miles away away from Earth was to go out, how long would it take for us to know that this had happened? Light travels at a speed of 3 x 10^8 meters/second.

2. What would the density be (in g/cm^3) of a block that is 4 cm by 15 cm by 12 cm, and has a mass of 4.3 kg?

3. An object has a density of 8.96 g/cm^3. It has a mass of 405 grams. What is its volume?

4. An object has a density of 3.75 g/cm^3. It has a volume of 9.3 liters. What is its mass?

Solution Preview

1. To solve this problem we must convert the distance from miles to meters or kilometers.

We know 5 miles = 8 Km ===> 1 mile = 8/5 Km = 1.6Km

Thus the distance from earth to sun is,

D = 93,000,000 * 1.6 Km = 93,000,000 * 1.6 * 1000 meters

= 93 * 10^6 * 1.6 * 10^3 = 148.8 * 10^9 meters

Suppose, the last light pule from the sun leaves it at t=0 and that pulse will be our last detected light from the sun. The pulse travels ...

Solution Summary

In just under 350 words, this solution explains each step of these physics-based problems, calculating various variables, and provides the full calculations. This response is straight-forward and is easy to interpret, for anyone who has a basic understanding of this subject material.

... Average velocity = Total displacement/Total time = 550/35 ... by sound to cover the distance h travelling ... 24653h + 650281 = 0 _____ Solving for h ...

... problems dealing with units conversions, volume, density velocity and distance. ... b) What distance does the car go due ... Please show me how to solve these problems ...

... The magnetic field is calculated as a function of the distance from the axis ... the disk, which rotates about the Z axis at an angular velocity (ohm sign ... Solution: ...

... Step by step solution provided. ... electron in the conductor moving with a drift velocity vd towards ... electron enters the section AA' and travels a distance vd in ...

Calculating density, acceleration, mass, and distance. ... Therefore, average velocity, <v> = (s1+s2+s3)/(t1+t2+t3 ... This solution provides brief calculations for each ...

... SOLUTION Basic theory. ... section is v, the liquid will move forward by a distance equal to v ... a3v3 etc.) where a = area of cross section, v = velocity of liquid at ...

... A step by step solution provided. ... is v, the liquid will move forward by a distance equal to ... a3v3 etc.) where a = area of cross section, v = velocity of liquid ...

... you could estimate (low/high) dispersal distances of the ... re-arranging the Bernoulli equation and solving for the (l ... v_in" is the outlet lance velocity and "v_out ...

... The solution is provided in an attached Word document ... e.) Vertical distances are always measured relative to ... encounters a constriction where its velocity is 12 m ...

... SOLUTION Basic theory. ... section is v, the liquid will move forward by a distance equal to v ... a3v3 etc.) where a = area of cross section, v = velocity of liquid at ...