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A raft is made of 11 logs lashed together. Each is 57 centimeter in diameter and has a length of 7.3 meter. Determine how many people can the raft hold before they start getting their feet wet, assuming the average person has a mass of 67. Do not neglect the weight of the logs. Suppose the specific gravity of wood is 0.57.
a rigid sealed 1936 ford coupe contains an equilibrium water liquid-vapor mixture with a quality of 8.8333 at 3.00
A 20 centimeter length of 0.26 millimeter diameter nichrome wire is welded into a circular loop. Evaluate what is the induced current in the loop
Now assume that a strong, uniform magnetic field of size 0.55 T pointing straight down is applied. What is the size of the magnetic force on the wire
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, What is the magnitude of the cat's centripetal acceleration
An alpha particle (which is a helium nucleus, Q=+2e, m=6.64×10 27 kg) is emitted in a radioactive decay with KE = 5.43 MeV.What is its speed? Compute the magnitude of the force among two 5.10C point charges 6.6cm apart.
A student applies a 20.-newton force to move a crate at a constant speed of 4.0 meters per second across a rough floor
A new event has been proposed for the Winter Olympics. An athlete will sprint 100 m, starting from rest, then leap onto a 18 kg bobsled. How far will Lisa compress the spring
Using a theodolite, with a laser rangefinder, a researcher at point A locates a pair of rare birds nesting at point B, For observation from point C, determine the direction angles and distance to the nest at B
a mass spectrometer is used to examine the isotopes of uranium. ions in the beam emerge from the velocity selector at a
The wavenumber of the incident radiating in a Raman spectrometer is 20487 cm-1. What is the wavenumber of the scattered Stokes radiation
A doppler blood flow unit emits ultrasound at 5.0 MHz. What is the frequency shift of the ultrasound reflected form blood moving in an artery at a speed of 0.20 m/s?
q1. a meterstick is at rest in an inertial frame s2. if s2 moves with a speed of 0.7c with respect to a rest frame s1
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