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a water rocket, launched from the ground, rises verticallywith acceleration of 30 /s2 for 1 s when it runs out of fuel. Disregarding air resistance, how high will the rocket rise?
A water slide launches a child horizontally above a swimming pool. How far from the launch point does the child land in the water
You are standing between two plane mirrors that are parallel to each other. Determine the first two mirror positions on each side of you relative to the mirrors
Determine the number of moles of helium in the balloon and Determine the mass of helium needed to inflate the balloon to these values
A guitar string is fixed between two points, 53.0cm apart. Its linear density is 12.0g/m. Now suppose the string is vibrating in its third harmonic. What is the distance between nodes
A ring is fitted loosely (with no friction) around a long, smooth rod of length L = 0.901 m. Determine the radial velocity of the ring as it reaches the moving end of the rod
What is the radiation pressure (force/area) of a laser pointer on a heavy, highly absorbing surface? Assume that the laser has an output power of 1mW, a wavelength of 600nm, and a beam radi- us of 1mm. To do this problem, first compute the number ..
A 5C charge moves with velocity v = 10i + 3 j - 7 k m/sec in magnetic field B = 5i+ 13j - 1k tesla. find directions of magnetic force on the moving charge
An elevator moves downward in a tall building at a constant speed of 4.35 m/s. Estimate the highest floor from which the bolt can fall
A muon is a lepton that is a higher-mass (rest mass 105 MeV/c^2) sibling to the electron. How many muons survive to reach the surface
A van is approaching a stationary motion detector at 45 m/s. The motion detector emits ultrasonic sound waves toward the van, what is the frequency of the reflected sound measured by the detector
in music two notes are said to be an octave apart when one note is exactly twice the frequency of the other. suppose
the resolving power of a microscope depends on the wavelength used. if you wanted to see an atom a wavelength of
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