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A plane sinusoidal electromagnetic wave in air has a wavelength of 3.90cm and an E field amplitude of 1.40V/m .
a) What is the frequency of the wave?
b) What is the magnetic field amplitude?
c) What is the intensity?
d) What average force does this radiation exert perpendicular to its direction of propagation on a totally absorbing surface with area 0.246m2 ?
You are designing a banked turn at an automobile racetrack, The coefficient of static friction between the track and the tires is 0.400. What are the radius of curvature R and banking angle
The model airplane in figure below is flying at a speed of 19 m/s on a horizontal circle of radius 17 m, What is the net work done on the plane
for a particle in a one demention box, the ground state wave function is: psi=(2/L)^1/2 sin(piX/L), What is the probebility that the particle is in the right-hand half on the box
A 420g oscillator has a speed of 128.5cm/s when its displacement is 3.30cm and 59.5cm/s when its displacement is 5.40cm .what is the oscillator's maximum speed
A charge of 2.65mC is placed at each corner of a square 0.450m on a side, Determine the direction of the force on a charge
In the lungs there are tiny sacs of air that are called alveoli. An oxygen molecule (mass = 5.30 x 10-26 kg) is trapped within a sac, and the uncertainty in its position is 0.140mm. What is the minimum improbability in the velocity of this oxygen ..
the coefficient of static friction is 0.26. If you apply the minimum force needed to get the refrigerator to move, illustrate what will the acceleration then be?
A tetherball leans against the smooth, frictionless post to which it is attached, What is the force the pole exerts on the ball
An electric motor rotating a workshop grinding wheel at a rate of 107 rev/min is switched off. Assume the wheel has the constant negative angular acceleration of magnitude 1.70 rad/s2.
An RL circuit consists of a switch, an emf source Eo, a 4 kΩ resistor, and a 5 H inductor. If the potential across resistor is 16 V 5 ms after switch is closed, find out the source emf, Eo.
The two forces in each pair could have different physical origins (for instance, one of the forces could be due to gravity, and its pair force might be due to friction or electric charge).
A 63.0 ?F capacitor is connected to a generator operating at a low frequency. The rms voltage of the generator is 4.00 V, at what frequency will the fuse burn out
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