Find the speed of first asteroid relative to second asteroid
Two asteroids head straight for Earth from the same direction. Their speeds relative to Earth are 0.79c for asteroid 1 and 0.60c for asteroid 2. Find the speed of asteroid 1 relative to asteroid 2.
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A 86-mW vertically polarized laser beam passes through a polarizer whose polarizing angle is 25° from the horizontal. What is the power of the laser beam when it emerges from the polarizer?
Assuming the ideal gas model for the air, determine the pressure and volume at the beginning of the isothermal expansion in kPa and m3, respectively.
(a) Find the wavelength of the sound upwind of the siren. (b) Find the wavelength of the sound downwind of the siren.
If the pot is initially full of saturated water at 200 kPa, how much energy must be added to the pot before the total mass of the water has been reduced by half?
Determine the acceleration of the mass center of the disk and the components of the force exerted on the disk by the curved surface when theta=60 degrees.
What is the largest value of the fundamental unit of charge that is consistent with your measurements?
Determine the acceleration of the assembly and the angular acceleration of the disk under the action of the force applied to a cord wrapped securely around the disk.
Consider the flow of air over a vertical flat plate at a low velocity, u1 in ambient pressure, P1. Provide a concise physics-based reason for your findings.
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