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An 8 kilogram bullet is shot into a 4 kilogram block, at rest on a frictionless horizontal surface. The bullet remains lodged in the block. The block moves into a spring and compresses it 8.7 centimeters. The force constant of the spring is 2400 N/m. Determine the initial velocity of the bullet is closes to?
Electrons can be “boiled off” of a wire by heating the wire to sufficiently high temperature (typically well over 1000? C). Typically the electrons leave the wire with a fairly low speed which can be approximated as zero
The air-release flap on a hot-air balloon is used to release hot air from the balloon when appropriate. On one hot-air balloon, the air release openings has an area of 0.5 m^2, and the filling opening has an area of 1 m^2.
An electron is released a short distance above Earth's surface, the first electron just great enough to cancel the gravitational force on it, How far below the first electron is the second
You are to program a robotic arm on the assembly line to move in a xy-plane. Its first displacement is; its second displacement is, of magnitude 6.51 and direction 62.7 measured in the sense from +x-axis toward -y-axis. The resultant of the two displ..
A beam of light traveling in water (n=1.33) is incident on a glass surface (n=1.52). At what angle of incidence will the outgoing light be fully polarized?
four moves you are to make four straight-line moves over a flat desert floor starting at the origin of an xy coordinate
A 180 g copper bowl contains 185 g of water, both at 20.0°C. A very hot 300 gcopper cylinder is dropped into the water, causing the water toboil, with 4.80 g being converted tosteam. The final temperature of the system is 100°C. Neglectenergy tran..
Traveling at a speed of 18.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. What is the speed of the automobile
A box at rest has the shape of a cube 3.5m on a side. This box is loaded onto the flat floor of a spaceship, What is the volume of the box as we observe it
A package in an airplane moving horizontally at 275 m/s is dropped while the altitude is 766 meters. How far forward from the spot over which it was dropped does the package land.
in proton-beam therapy a high-energy beam of protons is fired at a tumor. the protons come to rest in the tumor
What is the energy density in the electric field at the surface of a 2.00-cm-diameter sphere charged to a potential of 2000V
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