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The sound from a very high burst of fireworks takes 4.5seconds to arrive at your eardrums. The burst occurs 1500m above you and traveled vertically through two stratified layers of air, the top one at 0 degrees Celsius and the bottom at 20 degrees Celsius. How thick is each layer of air?
Suppose you are driving a car around in a circle of radius 182 ft, at a velocity which has the constant magnitude of 33 ft/s. What angle (in degrees) will the string make with the vertical
The drawing shows three identical rods (A, B, and C) moving in different planes. Find the magnitude of the motional emf for the rods
The smallest angle of scattering of .32 nm x-rays from a crystal is35o (measured from the surface of the crystal). What is the frequency of these x-rays
Unpolarized light with an average intensity of 845 W/m2 enters a polarizer with a vertical transmission axis. What is the orientation angle of the second polarizer relative to the first one
Huck Finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion relative to the shore). What is Huck's velocity (speed and direction) relative to the river bank
q1. suppose a small metal ball of mass and negative charge. the ball is released from rest at the point and constrained
Find the change in internal energy using first law of thermodynamics.
There are two identical, positively charged conducting spheres fixed in space. The spheres are 45.0 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0720 N. find the initial charge on each sphere
While a roofer is working on a roof that slants at 44.0 above the horizontal, he accidentally nudges his 93.0 toolbox, causing it to start sliding downward, starting from rest.
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0. What is the maximum speed of the glider
An airplane, flying horizontally at an altitude of 1.83 km at a speed of 346 m/s, releases a package. find the speed of the package just before it reaches the ground
A 30cm string of linear density 7.0 g/m is stretched to a tension of 35N and fixed at both ends, Calculate the wavelengths and frequencies of the first fourharmonics
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