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A penny has a mass of about 10 g. The penny falls from a height of 169 meter and, unfortunately lands right on the head of a man standing directly below it.
A) Ignoring air resistance, find the speed of the penny the instant it strikes the man's head?
B) The penny comes to rest on the man's head after penetrating the scalp a distance of 4.17 millimeter. Find the average force exerted by the penny on the head.
Three capacitors having capacitances of 8.7%u03BCF , 8.7%u03BCF , and 4.1%u03BCF are connected in series across a 31-V potential difference. What is the total energy now stored in the capacitors
If the string is 9.5 long, has a mass of 30 and is pulled taut with a tension of 8.50, how much time does it take for a wave to travel from one end of string to the other?
A cylindrical air duct in an air conditioning system has a lengthof 5.5 m and a radius of 7.2 x 10^-2 m. A fan forces air ( n = 1.8x 10^-5 Pa·s) through the duct, such that the air in a room(volume = 280 m^3) is replenished every ten minutes. Dete..
A wire with mass 55.0g is stretched so that its ends are tied down at points 96.0cm apart. What is the speed of propagation of transverse waves in the wire
A metal rod 32 cm long moves in a plane perpendicular to a magnetic field of 200 G. Find the speed of the rod if the potential difference between the ends is 6 V
A jet flying at 136 m/s banks to make a horizontal circular turn. Calculate the magnitude of the necessary lifting force
An object of mass 5.0 kg is attached to a string of length 2.0 m and rotating in a horizontal circle with an angular velocity of 3.0 rad/s
A transverse electromagnetic plane wave with a frequency of 2.84 MHz travels directly away from you (- z direction). At time t = 0, your magnetic field detector measures a magnetic field of 4.57 × 10-8 Tesla pointing down (- y direction) which fur..
On an air track, a 402.5 g glider moving to the right at 1.95 m/s collides elastically with a 502.0 g glider moving in the opposite direction at 2.90 m/s, Find the velocity of second glider after the collision
What minimum force requires for door to hold it open
An alternating source drives a series RLC circuit with an emf amplitude of 6.07 V, at a phase angle of +33.3°. what is the potential difference across the inductor
Two particles, with charges of q1 = 60.0nC and q2 = ?60.0nC, are placed at the points with coordinates, Find the electric potential energy of the configuration of the three fixed charges
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