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A 30cm string of linear density 7.0 g/m is stretched to a tension of 35N and fixed at both ends
(a) What is the wave speed for the string
(b) Calculate the wavelengths and frequencies of the first fourharmonics.
(c) Which of these frequencies are audible to human hearing.
(d) The tension is increased to 30N.
(e) Now what are the wavelengths and frequencies of the fourharmonics.
When the eye looks at a star (a point of light), diffraction at the pupil spreads the image of the start on the retina into a small disk, What is the linear size of the image of the start on the retina
After the skier on the hill had been moving for 5.0 s, friction of the snow suddenly increasedmaking the net force on the skier zero. what is new coefficient of friction? how fast would the skier now be going after skiing for 5.0s.
A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor conductor 0.171 mm thick, evaluate the magnetic field strength
You then kick the ball with the same initial velocity and at the same angle to the horizontal. This time, however, you kick it up a 15 degree slope. What is the horizontal range of the ball's travel
A rock with mass m = 3.70 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 19.3 N and by a fluid resistance force.
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern, How many electrons pass through the wires connected to the patient
An inductor is connected to the terminals of a battery that has an emf of 12.0 V and negligible internal resistance. What is the resistance R of the inductor
What was the bullet's speed as it left the barrel. A 1kg block rests against one end of a horizontal spring which is compressed by 10 $cm$.
A girl is sledding down a slope that is inclined at 30º with respect to the horizontal. The wind is aiding the motion by providing a steady force of 184 N that is parallel to the motion of the sled.
You drive on Interstate 10 from San Antonio to Houston, half the time at 60 km/h and the other half at 105 km/h. On the way back you travel half the distance at 60 km/h and the other half at 105 km/h.
Two adjacent natural frequencies of an organ pipe are determined to be 299 Hz and 345 Hz. (Suppose the speed of sound is 343 m/s.)
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ground.
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