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A cylinder of wood, density 800 kg/m^3 is 2.5 m long. Cross sectional area of the cylinder is 0,4 m^2. A mass of 200 kg is placed on the top of the cylinder which is floating upright in the water, density 1000 kg/m^3. To what depth will the cylinder sink?
What is the magnitude of the electric field. A 50-gram super ball traveling at 25m/s is bounced off a brick wall and rebounds at 22 m/s. A high speed camera records this event. If the ball is in contact with wall for 3.5 ms, what is the average acc..
You wind up and throw a 10 kg medicine ball horizontally with a speed of 1.3 m/s directly at your 24-kg little brother. find the common speed of the ball-brother composite
In an L-R-C series circuit, L = 0.398H , R = 310ohms , and C = 5.91×10?8F . When the ac source operates at the resonance frequency of the circuit, What is the voltage amplitude of the source
A 4.0 kg block is on horizontal table attatched to a 6.0 kg block hanging from frictionless pulley. what is the acceleration of the system
A glass plate having parallel faces and a refractive index of 1.55 lies at the bottom of a liquid of refractive index 1.62. Compute the angle of refraction of this light in the glass
Using Ampère's law, calculate the magnetic field inside and outside of a toroidal coil with a radius of 25 cm
A partially evacuated airtight container has a tight-fitting lid of surface area 81.7 cm2 and negligible mass. what is the air pressure in the container before it is opened
A Hooke's-law spring of spring constant 4900 N/m is compressed by 0.02 m. How high does the bullet go
The volume flow rate in an artery supplying the brain is 4.00 10-6 m3/s. If the radius of the artery is 4.80 10-3 m, determine the average blood speed
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). calculate the power delivered to the primary
a heat engine operates between a hih temp reservoir at 610K and low temp reservoir at 320K. find the net change in entropy as a result of this cycle
An ideal transformer has 255 loops in its primary coil and 125 loops in its secondary coil. what is the rms secondary voltage
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