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Find what frequency sound has a 0.400 meter wavelength when the speed of sound is 344 meter per second?
Two charges, +q and -q, are located in the x-y plane at points (0,+d/2) and (0,-d/2), respectively. Calculate the magnitude of the electric field at point P with the superposition principle
A 10 g object moving to the right at 20 cm/s makes an elastic head-on collision with a 15 g object moving in the opposite direction at 30 cm/s. Evaluate what the velocity of each object after collision
An arrow of mass 20 gram is shot horizontally into a bale of hay, striking the hay with a velocity of 60 m/s. Obtain the average stopping force acting on the arrow
a what plate area is required if an air-filled parallel-plate capacitor with a plate separation of 2.5 mm is to have a
For a real train the friction between the car and the track can be described by a friction coefficient, μ. Find out this coefficient assuming that the time it takes for the car to come to rest is 3 s.
A vector has components of 12.0 units along the x axis and 14.0 units along the y axis. What is the magnitude of the vector? What is the angle among the vector and the x axis (degrees)?
a person reading a european newspaper finds that the low temperature the night before in stockholm was -16 degree
find the position and velocity of a particle at t 2.02 s if the particle is initially moving east at a speed of 21.6
Two balls are rolled off the tabletop that is 0.75m above the floor. how far does each ball travel horizontally before hitting the floor
A man walks south at a speed of 2.00 m/s for 15.0 minutes. He then turns around and walks north a distance 2000 m in 15.0 minutes. What is the average speed of the man during his entire motion?
during a lightning flash 18 c. of charge moves through a potential difference of 8.4e07 v. how much electrical
A solid aluminum sphere has a radius of 2.34 m and atemperature of 89.0 °C. The sphere is then completely immersedin a pool of water whose temperature is 22.3 °C. find the magnitude of the difference between the weights
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