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A small metal sphere weighs 0.342 N in air and has a volume of 10.1 cm3. What is the acceleration of the sphere as it falls through water? The acceleration of gravity is 9.8 m/s^2.
Two converging lenses, each of focal length 14.2 cm, are placed 59.9 cm apart, and an object is placed 26.6 cm in front of the first. determine the magnification of the system
A typical red blood cell subtends an angle of only 1.7×10?5rad when viewed at a person's near-point distance of 25 cm. find the magnitude of the angle subtended by the red blood cell
Planet Z is 12,000 km in diameter. The acceleration due to gravity on Planet Z is 7.0 m/s2.
Consider a black box which is approximately a 10-cm cube with two binding posts. Each of these terminals is connected by a wire to some external circuits. Otherwise, the box is well insulated from everything.
A positron is an antimatter particle identical in mass to an electron but with a positive charge, Calculate the energies of the three lowest states of positronium
Two circular metal plates of radius 0.17 m and thickness 8.5 mm are used in a parallel plate capacitor. A gap of 1.7 mm is left between the plates, What is the capacitance of this capacitor
In a Carnot cycle, the isothermal expansion of an ideal gas takes place at 400K, determine the work performed by the gas during the cycle
Differentiate this equation, q=qpcosωt to find the current in the LC circuit, and use q=CV to find the voltage. From these obtain the magnetic energy in the inductor and the electric energy in the capacitor, and sum to show that the total energy rema..
A 82 kg diver steps off a 13 m tower and drops from rest straight down intothe water. If he comes to rest 4.5 mbeneath the surface, determine the average resistance force exertedon him by the water.
Unpolarized white light is incident on a polarizer and then falls on an analyzer whose TA (Transmission Axis) makes an angle of ?= 23.5? with the polarizer. What is the fraction of the original light transmitted through both the polarizer and analy..
The centers of a 14kg lead ball and a 50g lead ball are separated by 11cm What gravitational force does each exert on the other?. What is the ratio of this gravitational force to the weight of the 50g ball?
A 2.45 kilogram steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0 degree with the surface. estimate the average force exerted on ball by the wall
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