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Discuss how radio stations use electromagnetic waves to send sound information to radio receivers.
A 1.2 kilogram object moving with a speed of 8m/s collides perpendicularly with wall and emerges with a speed of 6m/s in the opposite direction, find the magnitude of the average force on the object by the wall
The greatest height reported for a jump into an airbag is 99.4 m by stuntman Dan Koko. determine how fast he would have been traveling on impact had air resistance been absent
a 13 nc charge is located at the origin.what is the strength of the electric field at the position xy 5 cm 0 cm?what
A radioactive isotope has a half-life of 76.0 min. A sample is prepared that has an initial activity of 16.0E10 Bq. How many radioactive nuclei are initially present in the sample
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.602 and the coefficient of kinetic friction is 0.327. How much force is needed to begin moving the book
Fairgoers ride a Ferris wheel with a radius of 4.35m, the bottom of which is 1.75m from the ground. The wheel completes one revolution every 30s. A passenger drops his keys when he is three quarters of the way up and at the 10 o'clock position. Wh..
A tennis ball is hit with a vertical speed of 30 m/s and a horizontal speed of 25 m/s. How long will the ball remain in the air
The image of a tree on a 35 mm color slide is 1.7 mm high. It is to be projected onto a screen 8.0 m from the slide, and is to appear 559 mm high. What is the magnification of the system
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
A 50-kg satellite circles planet Cruton every 5.6 h in an orbit by a radius of 12 × 106 m. What is the magnitude of the gravitational force on the satellite with planet Cruton?
A sound wave with intensity 4 mW/m2 interferes destructively with a sound wave that has an intensity of 13 mW/m2
The gravitational potential energy of all the water stored behind avery large dam is 1.2×1016 J, using the base of the damas the reference point for zero PE. Imagine you could store the same amount of potential energy in a system consisting oftwo ..
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