Next, you'll compare your model for the man with your model for a boy sliding on the same sled along the same path. Keep the first Tracker experiment open, but also open this Tracker experiment: Ice Slide 1 modele.
From this file, select the point mass model boy and repeat the procedure you used to create the dynamic model for the man. Once again, use the
initial values for time t = 0.20 seconds.
Try different values of the coefficient of friction and come up with a model that matches the motion of the child. Once again, modify the value
of mk to get as close as you can to matching the boy's observed position for the entire slide.
Once you're satisfied with your model for the boy, record your model values in the table below.
Surfaces
Expression
parameter: m
parameter: mk
initial value: t
initial value: x
initial value: vx
force function: fx

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.