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Question: A beach ball with a radius of 0.5m is rolling along the sidewalk with a speed of 2m s-1. There is a light mist consisting of 3.1 small droplets of water in every cubic meter of air. Estimate to within a factor of 2 the mean distance the ball travels between collisions with droplets of the mist.
A proton is moving in a uniform magnetic field oriented along the positive x-axis. What would you need to change, if you wanted the proton to move on a helical path along the positive x axis
A silver can of mass 0.233 kg contains 0.030 kg of water. The system is heated electrically. The energy entering the system is calculated to be 207 J. By how much will the temperature (in Kelvin) of the system rise assuming all the heat goes into the..
a marble column of a cross sectional area 1.5 m^2 suports a mass of 24000 kg, what is the stress within the ciolumn? N/m^2
Capacitors C1 = 6.03 ?F and C2 = 2.45 ?F are charged as a parallel combination across a 298 V battery, Calculate the resulting charge on capacitor C1 and C2
A carnival merry-go-round has a large disk-shaped platform of mass 120 kg that can rotate about a center axle. Determine the rotational velocity of the platform
The length of an air column that produces a strong resonance in a cylinder is 0.18m, what is the frequency of the tuning fork being used .
A copper container of mass 0.080kg and specific heat 387Jkg^-1K^-1 contains 0.3kg of water and 0.04kg of ice at 0 degrees Celsius. Find the mass of the water left in the container
One afternoon, a couple walks five-sixthsof the way around a circular lake, the radius of which is1.70km. What are the magnitude and direction (relative to due east) ofthe couple's displacement
A student calibrates a constant volume gas thermometer in dry ice (-78.5°C) and in boiling ethyl alcohol (+78.0°C). What value (in °C) does he obtain for absolute zero
Tungsten has a temperature coefficient of resistivity of 0.0045 (C°)-1. At what wire temperature will the power that is delivered to the wire be decreased to 2/3 P0
A light string that does not stretch changes from horizontal to vertical as it passes over the edge of a table. The string connects m1, a 3.4 kg block, originally at rest on the horizontal table at a height 1.27m above the floor, to m2, a hanging ..
The trajectory of a rock thrown from a height with an initial speed of 17.3 m/s is shown in the figure below. Evaluate the magnitude of the gravitational field at the surface of the planet. The planet has no atmosphere.
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