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Classical Mechanics
Light traveling in air is incident on a pane of glass (n = 1.6) at an angle of 25 degrees relative to the normal. What angle relative to the normal will it have once it is inside the glass?
Classical Mechanics
A mass of 1.5 tonnes is suspended 1.5m above a stake. How far into the ground will the stake go if if the mass is allowed to fall and 30% of the energy upon impact is lost due to heat and if ground resistance is 300kn
Classical Mechanics
A solid in the shape of a hemisphere with a radius of 2 units, has its base in the xy-plane
and the centre of the base at the origin. If the density of the solid is given by the function
ρ(x, y,z) = xyz, determine the mass of the hemisphere.
and the centre of the base at the origin. If the density of the solid is given by the function
ρ(x, y,z) = xyz, determine the mass of the hemisphere.
Classical Mechanics
Question # 1: A ball is made of a long string of thickness about 2 mm. The radius of the ball is 10 cm.
Estimate the length of the string. Point out the possible errors in your calculation.
Estimate the length of the string. Point out the possible errors in your calculation.
Classical Mechanics
A solid cube of aluminum (density 2.7 g/cm3) has a volume of 0.2 cm3. It is known that 27 g of aluminum contains 6.02 x 1023 atoms. How many aluminum atoms are contained in the cube?
Classical Mechanics
A ball is made of a long string of thickness about 2 mm. The radius of the ball is 10 cm. Estimate the length of the string. Point out the possible errors in your calculation.
Classical Mechanics
A simplified set of cross sections for Argon gas can be described as:
Elastic collision cross section Qel(E) = 1.59x10-19 m2 (E/E*) if E<E* = 11.55 eV
= 1.59x10-19 m2 sqrt(E*/E) if E>E* = 11.55 eV
Ionization cross section Qion(E) = 0 if E<Ei = 15.9 eV= 3.18x10-20 m2 log(E/Ei) (Ei/E) if E>Ei = 15.9 eV
Assuming a Maxwell-Boltzmann distribution function for electrons, plot the following quantities as a function of the electron temperature in a range from 1 to 10 eV for a plasma at 100 Pa and Tgas = 300K:
1) The average elastic collision frequency
2) The average ionization frequency
Elastic collision cross section Qel(E) = 1.59x10-19 m2 (E/E*) if E<E* = 11.55 eV
= 1.59x10-19 m2 sqrt(E*/E) if E>E* = 11.55 eV
Ionization cross section Qion(E) = 0 if E<Ei = 15.9 eV= 3.18x10-20 m2 log(E/Ei) (Ei/E) if E>Ei = 15.9 eV
Assuming a Maxwell-Boltzmann distribution function for electrons, plot the following quantities as a function of the electron temperature in a range from 1 to 10 eV for a plasma at 100 Pa and Tgas = 300K:
1) The average elastic collision frequency
2) The average ionization frequency
Classical Mechanics
When a body has stored PE then when does it convert into another form like KE?
Is it that it converts only when a conservative force works on it?
Eg a ball falling down has KE
Because it's PE is converting into KE
Why doesn't Conservative force store KE directly instead of converting PE into KE?
Is it that it converts only when a conservative force works on it?
Eg a ball falling down has KE
Because it's PE is converting into KE
Why doesn't Conservative force store KE directly instead of converting PE into KE?
Classical Mechanics
Is PE stored in an object when a work is done against a conservative force like graviity?
I want to ask that if a conservative force does work directly then PE can't be stord?
I want to ask that if a conservative force does work directly then PE can't be stord?
Classical Mechanics
When we lift chair and move with it has kinetic energy and potential energy
This I understood from ans given by you
But what happens when I stop where does that KE go
And where PE is utilised
This I understood from ans given by you
But what happens when I stop where does that KE go
And where PE is utilised
