High-voltage lines transmit needed power from energy providers
to homes and
businesses, but exposure to the electric fields from power lines
may have undesired
effects. Research and assess the effects of exposure to
high-voltage lines on human
health.
In: Physics
Calculate the binding energy of the 2H nucleus and the 56Fe nucleus.
In: Physics
examine and explain the performance characteristics and application of different oscillators while designing radio receivers. (1000 words)
please cite references
In: Physics
Q/ If E is a macroscopic field inside the dielectric , and consider an atom at position R , Draw a sphere of radius ℓ ( Lorentz sphere) about R. suppose( l » a interatomic spacing ). The contribution to the microscope field at R from induced dipoles on other atoms can be divided in two parts ;
For the two cases prove that the local field at center of sphere is :
ELF = E0 – 4/3 πP + 4/3 πP + 0
In: Physics
How should one REALISE Classical and Quantum ACTION.(Please
explain both)
That is,what in PERFECT sense is its Physical or Mathematical
interpretetion + intuition + need + use + origin?!
In: Physics
Suppose that you are designing a parachute so that the terminal velocity using the parachute will be the same as the velocity at the end of a normal (frictionless) jump from a height of 2.80 m. If the parachute exerts a drag force of - b v where v is in meters per second and if the parachute is designed for an 70.0 kg person, what is b?
In: Physics
How is energy deposited in the interaction with matter of each of the following? photons, electrons, alphas, neutrons. Is the full energy of the radiation deposited? If not, where does the rest go? Is the energy deposited with high linear energy transfer or low linear energy transfer? Is the radiation track sparse or dense?
In: Physics
Make a long line of positive charges by placing them very close together. How does the field change as you move down the line of charges?
In: Physics
A pendulum is swinging in an elevator that is accelerating upward at a constant acceleration a. (a) Using the Lagrangian method, what is the equation of motion? Note be careful here, the velocity needs to be measured from an inertial reference frame. (b) What is the frequency of small oscillations?
In: Physics
When someone falls from a tall building, the most effective way to save him is to provide a net at the bottom so that the person slows down himself conveniently without hurting himself, the impulse here is same that would have been without the net but the net provides extra time for the change in momentum. Another example is, in the game of cricket when the ball is hit by the bat the time to change the momentum is expected to be the least by the batsman to get an excellent shot.
Support your claim using equations and provide two scenarios with numbers and calculations.
In: Physics
A sample of an unknown material appears to weigh 300 N in air and 222 N when totally immersed in alcohol. What are (a) the volume and (b) the density of the material? (c) What material is it?
In: Physics
Show what the expression E • J represents in field theory, what would its analogous expression be in circuit theory?
In: Physics
(d) Given a condition with three different wind velocities, u1, u2 and u3 fluctuating towards a base station, which have different heights, let say z1 , z2 and z3. Apply the correlation function between of the condition of the velocities and wind loads at the various heights.
In: Physics
What's the difference between direct and indirect measurements? and which is better
In: Physics
Driving down a quiet street on a summer day with the car windows
down, you see a convertible
approaching from the opposite direction, with the driver playing
her car stereo loudly. Having a
well-trained musician’s ear, you notice that the song you hear is
in a key one semitone (the
interval between two adjacent keys on a piano) above the key in
which the song is typically
heard. You also know that to shift any note by one semitone, the
frequencies must be related by
a factor of 1.06. Assume both drivers are traveling at the same
speed, what is their speed?
In: Physics