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A 5 kg brick is placed into a pool of oil with a volume of 100L. The 5kg brick rests on the ground of the pool and is 26.51N. This raises the oil pool level to 102.5L. From balancing the forces acting on the brick, calculate the buoyant force on the brick? Note: You cannot use the definition of the buoyant force since you do not know the density of oil. Now calculate the density of the fluid (oil) from the definition of the buoyant force? Show your work for full credit.
A light spring of force constant k = 156 N/m rests vertically on the bottom of a large beaker of water. A 5.55-kg block of wood (density = 650 kg/m3) is connected to the spring, and block-spring system is allowed to come to static equilibrium. Wha..
A wire carrying a current of 2.10 A is bent into the shape of a square loop of side length 5.92 cm and is placed in the xy-plane. What is the torque on the wire loop
A car in an amusement park ride rolls without friction around the track. It starts from rest at point A at a height h above the bottom of the loop. Treat car as particle a) what is the minimum (in terms of R) such that the car moves around the loop w..
A 225 gram arrow is shot vertically into the air from an initial height of 1.40 meter above the ground with an initial speed of 18.6 m/s. find the amount of mechanical energy dissipated by air friction
A hypodermic syringe is attached to a needle that has an internal radius of 0.304 mm and a length of 3.05 cm. What force must be applied to the plunger, which has an area of 1.05 cm2
A heat engine takes in 111 kJ of heat from a reservoir at 811 K and exhausts 83 kJ to a reservoir at 290 K. What is the efficiency of an ideal engine operating between the same two reservoirs
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
A 405 Hz tuning fork and a piano key are struck together, and no beats are heard. When a 402 Hz tuning fork and the same piano key are struck, three beats are heard. What is the frequency of the piano key?
A typical adult human lungs contain about 270 million tiny cavities called alveoli. Calculate the average diameter of a single alveolus
A 1200 kg car pulls a 480 kg trailer. The car exerts a horizontal force of 3540 N against the ground in order to accelerate. What force does the car exert on the trailer
Find out an angular momentum of the system
Light containing two dissimilar wavelengths passes during a diffraction grating with 1000 slits/cm. On a screen 17.0 cm from the grating, the third-order maximum of the shorter wavelength falls midway among the central maximum and the first side maxi..
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