What is the frequency of the sound waves
The sound of a mosquito is produced when it beats its wings at an average of 600 beats per second. What is the frequency of the sound waves? Assuming that the speed of sound is 343 m/s, what is the wavelength of the sound waves?
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A 73.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted into place?
A cylindrical specimen of this alloy 565 mm long is pulled in tension. What is the radius of the specimen if an elongation of 1.13 mm occurs when a load of 28.2 kN is applied?
Discuss any internet article on plate tectonics, continental drift and its effects, or seismology. Or discuss any of Earth's many cycles and evidence of their effects.
A 78 g bullet traveling at 300m/s penetrates a block of ice at 0 celcius and comes to rest within the ice.Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision?
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 20km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle during this motion. Determine the electric potential difference.
A third force is applied and balances to zero the effects of the other two. What are the nagnitudes and direction of this third force? Specify the direction relative to the negative x axis.
A 29.0 g object moving to the right at 16.0 cm/s overtakes and collides elastically with a 7.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision.
25g ball moving at velocity of 200cm/s to the right collides and stick to 200g block that is intially at rest and is attached to spring of spring constant at 10n/m. Find max compression of spring.
A sled is pulled with a horizontal force of 17 N along a level trail, and the acceleration is found to be 0.36 m/s2. An extra mass m = 4.4 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffi
If the speed of sound is 330 m/s, how many seconds after the whistle is heard at the crossing will the train cross there?
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