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Q1. When two tuning forks of 128 Hz and 149 Hz, respectively, are sounded simultaneously, how various beats per second are heard?
Q2. The radar system at an airport broadcasts 11 microwaves with 150 of power. An approaching airplane with a 33 cross section is 36 away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all directions. What is electric field strength of the microwave signal received back at the airport 240 later?
A small object of mass 3.58 g and charge -17.4 µC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground
An infinite line of positive charge lies along the y axis, with charge density ? = 1.60 ?C/m. Find the magnitude of the net torque exerted on the dipole
An experimenter bombards a target of 54Cr with alpha particles such as 4He + 54Cr -> p+ 57Mn Suppose the incoming alpha particle has 26MeV kinetic energy in the lab, What is the kinetic energy of the detected proton
You create a diffrent kind of pendulum by swinging a meter stick (mass m) on its end. It swings with small oscillations. Determine the angular frequency w ( I=1/3 ML ^2)
A light bulb is connected to a 120 V wall socket. The current in the bulb depends on the time t according to the relation I = (1.414 A) sin[ (125.6 Hz) t ]. What is the frequency of the alternating current
A heat engine using a diatomic ideal gas goes through the following closed cycle, What is the thermal efficiency of this heat engine
define why a dielectric increases the maximum operating voltage of a capacitator even though the physical size of the capacitator doesn't change.
A 3 kg toy car with a speed of 5 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 5 m/s, how much kinetic energy is lost
A cosmic-ray proton in interstellar space has an energy of 25.0 MeV, What is the magnetic field in that region of space
Cowboy joe wishes to shoot his assaiat by ricocheting a bullet off a mirrored metal plate. To do so, must he simply aim at the mirrored image of his assaiant? Explain.
Find the typical speed for a tsunami. (Note down that in the open ocean, tsunamis generally have amplitude of less than a meter, allowing them to pass ships unnoticed. As they approach shore, however, water depth decreases and the waves slow down. Th..
During an action potential, Na+ ions move into the cell at a rate of about 3×10^?7mol/m2?s. How much power must be produced by the "active Na+ pumping" system
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