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A fan running on HIGH is switched to LOW and slows down to 83.5rad/s in 1.75s due to a deceleration of 42.0 rad/s/s. Calculate the HIGH speed of the fan?
14 6C (mass = 14.003242 u) undergoes beta decay to 14 7N (mass = 14.003074 u). Write the complete decay formula for this process. Find the maximum kinetic energy of the emerging electrons.
A metal ball with a mass of 3.81·10-6 kg and a charge of +5.21 mC has a kinetic energy of 4.77·108 J. how close will it come to the plane before stopping
A block of mass mb is attached to one end of a spring and is sliding on a horizontal frictionless surface. the other end of the spring is fixed. find the new period and new amplitude of the motion
What is the horizontal component of superhero's displacement.
In the Bohr model of the hydrogen atom, an electron in the 1st excited state moves at a speed of 2.19 *10^6 m/s in a circular path having a radius of 5.29*10^-11 m
Consider the expansion of 60.0 moles of a monatomic ideal gas along processes 1 and 2 in the figure below. In process 1 the gas is heated at constant volume from an initial pressure of Pi = 95 kPa to a final pressure of Pf = 190 kPa. In process 2 ..
A 5.00 uF and a 7.00 uF capacitor are connected in series, and this combination is connected across a 48.0V potential difference. Calculate the potential difference across first one
A hurricane wind blows across a 7.50m × 16.4m flat roof at a speed of 180km/hr, How much force is exerted on the roof
A 45 dB sound wave strikes an eardrum whose area is 4.1 × 10-5 m2. How much energy is received by the eardrum per second
The current in the electron beam of a computer monitor is 415 ?A. How many electrons per second hit the screen
A constant force, F = (4.51, ?3.79, 2.30) N, acts on an object of mass 18.2 kg, What is the total work done by this force
Your nephew swings a rock around his head on a massless string. If the string is 1.5 m long and is 12?degrees from the vertical, what is the period of the rock
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