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A 0.2kg flying pig toy is attached to the ceiling with a string. When the pig's wings flap, it moves at a constant speed of v in a horizontal circle of radius r. Find
a) the angle the string makes with the vertical and,
b) the tension in the string.
A radio receiver can detect signals with electric field amplitudes as small as 210?V/m. What is the intensity of the smallest detectable signal
The centers of a 15kg lead ball and a 50g lead ball are separated by 10cm, What is the ratio of this gravitational force to the weight of the 50g ball
Find the minimum diameter of an l = 16.3 m long steel wire that will stretch no more than 7.39 mm when a mass of 343 kg is hung on the lower end
A boy is on a Ferris wheel, which takes him in a vertical circle of radius 5.5 m once every 21.0 s. What is the angular speed of the Ferris wheel
Electrons are accelerated from rest through a potential difference of 350 V and then enter a uniform magnetic field that is perpendicular to the velocity of the electrons. Estimate the period of this circular path
Find the diameter of an aluminum rod that would conduct heat at the same rate as a 2.816 cm diameter copper rod of the same length
A step-down transformer has 2000 turns on the primary and 300 turns on the secondary, what is the secondary voltage amplitude
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
Determine the possible values of the total spin and total angular momentum quantum numbers, S and J, for a helium atom in the 1s3p conguration
How much work is required to compress 5.05 mol of air at 19.1°C and 1.00 atm to one-eighth of the original volume by an isothermal process
A snowboarder starts from rest and rides 39.47 m down a snow-covered slope that makes an angle of 33.19° with the horizontal, How far will she travel along the flat snow
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
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