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The human eye can detect light intensities as small as about 8 10-23 W/m2.
(a) What is the corresponding electric field amplitude?
_____ N/C
(b) Suppose the eye senses this light by detecting the force on electrons inside a photoreceptor cell within the eye. What is the electric force exerted on an electron by the electric field found in part (a)?
_____N
(c) How does this force compare to the weight of an electron?
electric force/weight of electron = _____
A flight controller determines that an airplane is 30.0mi south of him, Half an hour later the same plane is 30.0mi north west of him, What is the magnitude of its velocity during this time
A child of mass 24 kg sits 2.10m to the left of the center of a seesaw. The mass of the seesaw is 35 kg. How far to the right of the central pivot must a second child of mass 40 kg sit if the seesaw is to be perfectly balanced.
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest att = 0. what is the amplitude of the ossilation
Consider a conical pendulum with a bob of mass m=82.0 kg on a string of length L=10.0 m that makes an angle of theta=8.00 degrees with the vertical, Determine the radical acceleration of the bob.
A ball is thrown so that its initial vertical and horizontal components of velocity are 60 m/s and 15 m/s, estimate the ball's total time of flight
Two simple pendulums have length of 81-cm and 64-cm they are released from the same angular position at the same instant. After how much time would they both arrive at their initial position simultaneously.
The current flowing through a 333 mH inductor is a sinusoidal function of time, I = 0.250 sin (375t), What is the smallest positive value of time t when the magnetic potential energy stored in the inductor is at a maximum
Given the initial velocity V1=2i+1j m/s of a moving object. It is subject to the acceleration A=1i+2j m/s^2, What is the object's final speed
It compresses the spring, and then is pushed back in the opposite direction by the spring, eventually losing contact with the spring.
A small solid sphere, with radius 0.25 cm and mass 0.56 g rolls without slipping on the inside of a large fixed hemisphere with radius 15 cm, What is its kinetic energy at the bottom
What is the magnitude of the induced electric field 0.2070cm from the axis of the solenoid? Give your reply in Volts/meter in scientific notation to three significant digits.
Determine the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to reduce.
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