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Waves on a 10 meter rope travel at 19 m/s. You shake the rope back and forth until you get a standing wave with a single antinode. Shaking it faster, you are able to get another standing wave with two antinodes. What is the wavelength and frequency of each standing wave?
Suppose a certain jet plane creates an intensity level of 115 dB at a distance of 5.94 m. What intensity level does it create on the ground directly underneath it when flying at an altitude of 2.36 km? ____dB
A woman with her arms outstretched has a moment of inertia of 2 kg m^2. She rotates on a stool at an angular velocity of 6rad s^-1. what is her angular velocity
An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50s. what is the average speed of the object
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
An plane and pilot have a total mass of 168 kg. While executing a banked curve of radius 20 m at a speed of 12 m/s
A wire with mass 55.0g is stretched so that its ends are tied down at points 96.0cm apart. What is the speed of propagation of transverse waves in the wire
The siren on an ambulance is emitting a sound whose frequency is 2050 Hz. The speed of sound is 343 m/s. find the wavelength and frequency of the sound you hear
A bat moving at 3.4 m/s is chasing a flying insect. The bat emits a 49 kHz chirp and receives back an echo at 49.44 kHz. At what speed is the bat gaining on its prey
If you input the function x[n]=0,1,0,1,0,1,0,1,0,1 into a digital filter with impulse response h[m]=1,0,1, what is the output function y[n] of the filter
A 253 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal.
A 55 g piece of aluminum at 21 °C is cooled to -196 °C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized
You have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3,500 \rm N across the carpet to a spot 5 \rm m away on the opposite wall. How much work do you do on the dresser
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