Molecular Physics | Thermodynamics Answers

A ball is thrown down a building with an initial velocity of -5 m/s. It takes 6 seconds to reach the ground. How high is the building? What is the velocity when it hits the ground?

You are standing on the North bank of a river which has a current moving 0.2 m/s [E], if you can swim 1.0 m/s, in what direction (to the nearest degree) should you swim in order to reach the South bank of the river at the point exactly opposite from you?

Resolve the following vectors into their components:

a)7.5m/s2 [NW] b)15m/s[25*WofS]

 Calculate the quantity of heat absorbed by 3 kg of copper when heated from room temperature to 70oC. (ccu= 0.092 cal/groC)

What will be the change of temperature for 300 gr of iron (Fe) which have gained 2000 cal? (cFe= 0.11 cal/groC)

In problem R=√R²×+R²y=√(3.0km)²+(1.0km)²

R=2.24km, in what direction she from the starting point?

a set of forces are acting on an object. The first force, with a magnitude of 24.70N, is directed at -258 degrees and the second force, with a magnitude of 53.20B, is directed at 37 degrees north of east. The third force with a magnitude of 166.50N is directed at 270, and the fourth force of 49.92N is directed at 50 degrees east of south. Solve the resultant force and exact direction analytically.

The length of mercury column containing mercury in a glass thermometer is 5cm when thermometer is in contact with water at its triple point , calculate the measured temperature when the mercury column is 6cm and find the length of the mercury column when it is at steam point

What will be the change of temperature for 300 gr of iron (Fe) which have gained 2000 cal? (cFe= 0.11 cal/groC)

Calculate the quantity of heat absorbed by 3 kg of copper when heated from room temperature to 70oC. (ccu= 0.092 cal/groC)