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It can be shown that an electromagnetic wave's energy is equally divided between the electric field and the magnetic field. What is the total energy density in an electromagnetic wave of intensity 850 W/m^2?
a wedge-shaped sliver of glass viewed from above is illuminated with 436-nm light. the sharp edge is dark. what is the
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.26 m. what is its average acceleration during that contact
q1. for safety in climbing a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. whilst supporting
The sound produced by the loudspeaker has a frequency of 12002 Hz and arrives at the microphone via two different paths. The sound travels through the left tube LXM that has a fixed length.
A displacement, s, of an object as a function of time, t, is given by , Find an expression for the acceleration of the object
Two weights are connected by a very light flexible cord that passes over a 30 frictionless pulley of radius 0.100. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. One weight is 75N and the other is 125 N.
The Lunar Lander of mass 1.9Ã?104kg made the last 150m of its trip to the Moon's surface in 120s, determine the upword force required to decend at a constant speed
Calculate the moment of inertia acting on a 2X4 stud (viewed as a thin rod) of approximately 2.25 m with a mass of 5.00 kg, rotated through the center of the beam
You pull an 18 kilogram box across the floor with a strap that is at an angle of 39 degree above the horizontal. Determine the normal force and the tension in the strap
A tennis player receives a volley with the ball (0.0600 kg) traveling horizontally at 54.0 m/s, What is the impulse delivered to the ball by the racquet
The position of a particle is given by x = 3.5 cos ?t, where x is in meters and t is in seconds. Find the maximum speed and maximum acceleration of the particle
A solid cone has a height of 50.0 cm and apex ( upper angle) of 30.0 degree. How far h above of the cone is the center of mass
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