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A tuning fork with frequency 540 Hz is dropped from a building of height 125 m by a musician. The musician can hear the fork sounding as it falls. What frequency does the musician hear right after three seconds?
An object is moving with constant acceleration. During 24 s of the motion the object traveled 40 m and during the same 24 s the object speedincreased 4 times. Calculate the acceleration.
At a party, 5.00 kilogram of ice at-4.10°C is added to a cooler holding 30 liters of water at 20.0°C. Evaluate the temperature of the water when it comes to equilibrium
The average density of the planet uranus is 1.27 x 10^3 kg/m^3. The ratio of the mass of neptune to that of Uranus is 1.19. Find the average density of Neptune
The drawing shows two situations in which charges are placed on thex and y axes. They are all located at the samedistance of 2.3 cm from the origin O. For each of the situations inthe drawing, determine the magnitude of the net electric field atthe o..
A 10.5-cm-long solenoid contains 855 turns and carries a current of 4.59 A. What is the strength of the magnetic field at the center of this solenoid?
What is the end daughter nucleus of a Th-234 nucleus that undergoes a series decay of 4 alpha decays followed bt one beta decay. Determine the energy produced in the following reaction
A cooling fan is turned off when it is running at 880rev/min . It turns 1000 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0° incline. find the work done by the friction force between block and incline
A 24 ? resistor is frozen in a 0.50 kg block of ice with its two leads exposed. The resistor is then attached to a 9.0 V battery. how many hours does it take to completely melt the ice
a sinusoidal wave travels along a stretched point. a point along the string has a max velocity of 1m/s and a max displacement of 2cm
A geode is a hollow rock with a solid shell and an air-filled interior. what fraction of the geode's volume is hollow
A sky-diver jumps out of a plane and achives (terminal velocity) before opening his parachute.Explain what is meant by the term terminal velocity,why it occurs and what value of velocity a typical sky diver might experience.Include references to your..
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