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Would the headlights of a distant car form a two-source interference pattern? If so, how
might it be observed? If not, why not?
Monochromatic coherent light passing through two thin slits is viewed on a distant screen. Are the bright fringes equally spaced on the screen? If so, why? If not, which ones are
closest to being equally spaced?
A two-slit interference experiment is set up, and the fringes are displayed on a screen.
Then the whole apparatus is immersed in the nearest swimming pool. How does the fringe pattern change?
Let V be a vector space of 2×2 matrices over R. Show that the set S defined by S={(a,b)(c,d)belongs to V :a+b=0} is a subspace of R
a locomotive of 60 tonne mass pull some carriages of total mass 240 tonne, a distance of half a kilometre up a 1 in 200 incline with an acceleration of 0.2ms^-2. if the overall rolling resistance is 5% of a normal reaction, what is the total work done?
Three balls are drawn in succession without replacement from an urn containing 3 red balls, 2 blue balls and 2 yellow balls. Let Z be the random variable representing the number of blue balls.
Sample space (all outcomes)
Possible values
Properties 1 and 2
Probability Mass Function
Histogram
Write a program to take a String name as input then display the name's first and last words as it was and the middle will be only first letter using substring and indexOf.
Example:
Enter a String
Meser chen Rixou xang
Meser c.R. xang
Don't use array and split
Study carefully each of the item and do what is
asked.
1. List the types of intermolecular forces that exist between molecules in each of
the following species: (a) benzene (C6H6), (b) CH3Cl, (c) PF3, (d) NaCl, (e) CS2.
2. Which of the following can form hydrogen bonds with water? CH3OCH3, CH4,
F,HCOOH, Na+
3. Which of the following species are capable of hydrogen-bonding among
themselves? (a) C2H6, (b) HI, (c) KF, (d) BeH2, (e) CH3COOH
4. Arrange the following in order of increasing boiling point: RbF, CO2, CH3OH,
CH3Br.
5. Which member of each of the following pairs of substances would you expect
to have a higher boiling point? (a) O2 and Cl2, (b) SO2 and CO2, (c) HF and HI
What are the particles responsible for transferring electrical energy from a cell, through conducting wires in an electric circuit?
At 50°C, the vapor pressure of ethanol is 0.30 atm, acetic acid
is 0.08 atm, water is 0.12 atm, and acetone is 0.84 atm. Arrange these substances in
order of increasing manner:
1. rates of evaporation.
2. boiling point temperature.
3. vapor pressure.
4. viscosity.
5. intermolecular forces.
