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A 600 g steel block rotates on a steel table (μk = 0.6) while attached to a 1.1 m long hollow tube. Compressed air fed during the tube and ejected from a nozzle on the back of the block exerts a thrust force of 4.6 N perpendiculars to the tube. The maximum tension the tube can withstand without breaking is 50 N. If the block starts from rest, how many revolutions does it make before the tube breaks?
On a day of 30 degrees celcius, full sun, how hot would a granite paver get? Will a dark grey one get much hotter than an off white coloured one.
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is1025 kg/m3. determine the weight of a jetliner
The mass of the Moon is 7.18X10^22 kg and radius is 1738 km. If your mass is 90 kg, what would be your weight (gravitational force of attraction) on the Moon
for small stretches the achilles tendon can be modeled as an ideal spring. experiments using a particular tendon showed
Visible light passes through a diffraction grating that has 900 slits per centimeter, What is the difference between these wavelengths
a uniform cylindrical turntable of radius 2.00 m and mass 26.8 kg rotates counterclockwise in a horizontal plane with
In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force perpendicular to the arm, because the figure indicates.
Ice has formed on a shallow pond, and a steady state has been reached, with the air above the ice at -3.5°C and the bottom of the pond at 4.0°C. how thick is the ice
in a hydrogen atom in its lowest energy state the single electron and the single proton are separated by a tiny
Think the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z=2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies for these two species fo..
A baseball pitcher throws the ball in a motion where there is rotation of the forearm about the elbow joint as well as other movements. what is the rotational kinetic energy of the forearm
Sally travels by car from one city to another. She drives for 30.0 min at 69.0 km/h, 37.0 min at 34 km/h, and 54min at 74.0 km/h and she spends 13.0 min eating lunch and buying gas.
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