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1. What metal has a density of 7.9 x 10^3 kg/m^3? 2. A beauty crown is made of a pure precious metal. The crown has a weight of 1.029 N in air and 0.931 N when it is submerged in water. What metal is the crown made of?
Your gravity car has a falling mass of 1kg that begins 1.2m high. You car travels with a velocity of 1.6m/s, The combined mass of your car with the additional falling weight is 3.4kg.
A parallel plate capacitor is made from circular plates of Aluminum foil each with a radius of 3 cm. The distance between the plates is 8 mm. Find the charge stored in this capacitor
A sealed box is placed inside a sealed container. A pressure gage attached to the box reads 60.0 kPa, what is the absolute pressure inside the box
A helium-neon laser (λ = 632.8 nanometer) is used to calibrate a diffraction grating. determine the spacing between adjacent grooves in the grating
An ambulance has a siren of frequency 700 Hz. If the ambulance is moving at a speed of 60 miles per hour, what will be the frequency heard by a man standing on the sidewalk as the ambulance approaches him
An 1800 kg car stopped at a traffic light is struck from the real by a 900kg car. The two cars become entangled, moving along the same paths that of the originally moving car. If the smallest car were moving at 20m/s before the collision. What is ..
A loop of wirein the plane of the floor has a clockwise current of 7.78A. The radius of the loop is 19.7cm. Use the Biot SavartLaw to calculate the magnetic field at the center of the loop. What is the directionof the magnetic field at the center? Ex..
A blue car with mass mc= 459 kg is moving east with a speed of vc= 20 m/s and collides with a purple truck with mass mt= 1246 kg that is moving south with a speed of vt= 10 m/s. find the magnitude of the initial momentum of the car
guess the force between a proton and an electron at the Bohr radius of 0.5Å (1 Å=10-10 m). The magnitude of the charge of an electron, as well as a proton, is 1.6·10-19 C.
A small Statue recovered by an archaeological dig. its weight is measured to be 4.4 lb and its volume .008 ft^3. What is the statues weight density?
A 1d collision occurs between a rocket ship and an asteroid. In the rest frame of the rocket ship, the asteroid is traveling at 0.81c. What is the momentum of the asteroid in the ships rest frame O
Four masses M in deep space are connected by four identical light springs with spring constant k and equilibrium length L. What is the kinetic energy of this system
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