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A rifle is fired in a valley with parallel vertical walls. The echo from one wall is heard 2s after the rifle was fired. The echo from the other wall is heard 4s after the first echo. How wide is the valley if the speed of sound assumed to be 342m/s?
A compact disk player has just been turned off. A disk deceleratesuniformly from an initial angular velocity of 7.55 rev/s. The disk rotates through 6.00 revolutions before coming to rest. What is thetangential acceleration of a point on the disk 4.6..
A series RLC circuit has a resistance of 80? , an inductance of 0.48H , and a capacitance of 3.0, f= 130Hz. What is the impedance at that frequency??F
A playground merry-go-round is a dick of radius 4.0 m and mass 5.0x102 kg, initially stationary. what is the resulting angular velocity
to measure signal propagation in a nerve in the arm the nerve is triggered near the armpit. the peak of the action
two blocks are sliding along a frictionless track. block a mass 4.17 kg is moving to the right at 1.60 ms. block b mass
A very thin oil film (n = 1.25) floats on water (n = 1.33). What is the thinnest film that produces a strong reflection for green light with a wavelength of 500 nm
A satellite is in a circular orbit around an unknown planet.The satellite has a speed of 1.98 x 104 m/s, and theradius of the orbit is 1.94 x 106 m. What is the orbital speed of the second satellite
the sun can be treated as a spherical blackbody with a radius rsun 6.96 x 108 m and a surface temperature of tsun
a container has a large cylindrical lower part with a long thin cylindrical neck. the lower part of the container holds
Your assessment will consist of the following two sections: 1. The creation of two engaging and pedagogically-relevant lesson plans, covering the following areas and year levels:
A water tank is full to a depth of 10 m and the tank is 20 m above ground. The water pressure at ground in a hose 2cm in diameter is..?
A car driving at 35.0 m/s takes 26 minutes to travel a certain distance according to the drivers clock in the car. How long does the trip take according to an observer at rest on Earth?
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