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Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
Estimate how far from the site of impact the resulting shock front propagates before its speed is equal to the sound speed of the ambient atmosphere. (Assume the ambient atmosphere, through which the blast wave propogates, has mass density of 1.225x10^-3 g/cm^3 and temperature of 60 degrees F (or 288 Kelvin)).
In a physics demonstration, two rubber balls are dropped down a tube towards the ground,with the lighter ball behind, How high does the light ball rise after the two collisions
A spring has a force constant of 931N/m and an unstretched length of 8 cm. One end is attached to a post that is free to rotate in the center of a smooth table.
What is the total flux
The radius of the hydrogen atom is 0.053 nm. compute the frequency of the circular motion of the electron
For the third circuit, consisting of a single battery and two light bulbs in parallel, how does the brightness of the bulbs compare to the first circuit, What is the current through each bulb
A 60.0 kg pole vaulter running at 12.0 m/s vaults over the bar. Assume that the vaulter's horizontal component of velocity over the bar is 1.0 m/s and disregarding air resistance, how high was the jump?
Consider the mass on aspring system in Figure P11.20. Three identical springs, What is the frequency of this simple harmonic oscillator
Define a lie in the strict or formal sense and explain what is meant by communication - what is the principal purpose of communication?
Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
The resonant frequency of a series RCL circuit is 13.8 kHz. The inductance and capacitance of the circuit are each quadrupled. What is the new resonant frequency
What would be the height of the atmosphere if the air density were uniform and decreased linearly to zero with height
Old naval ships fired 10kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, as otherwise the heavy cannon would go careening across the deck of the ship.
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