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Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground.
a.) If the altitude of the satellite is 160 km, roughly what angular resolution does the camera need to read a license plate? Assume that the reading requires a linear resolution of about 5 cm;
b.) To attain that angular resolution, what must be the diameter of the aperture of the camera?
Two point charges, Q = +5.17 microC and q = -2.83 microC, are separated by r = 5.85 m. What is the electric potential energy?
A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m, What is the coefficient of kinetic friction, µk, of the surface from A to B
A series RLC circuit has a resistance of 24 ? and an impedance of 105 ?. what average power is delivered to the circuit
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 34.1 m/s in a time of 6.79 s
estimate the gravitational potential energy of the system relative to the lowest point of the motion when the cat is at its highest point.
An unknown material has a normal melting/freezing point of -26.3° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). What is the latent heat of fusion of the unknown material
A particle with a mass of 0.420 kg is attached to a horizontal spring with a force constant of 34.02 N/m. At the moment t = 0, Find the length of a simple pendulum with the same period
find the tangential and centripetal components of the net force exerted on a car (by the ground) when its speed is 38 m/s, and it has accelerated to this speed from rest in 9.5 s on a curve of radius 370 m. The car's mass is 1000 kg.
An 2400W arc welder is connected to a 660?Vrms ac line, Calculate the peak voltage and Calculate the peak current
A constant magnetic field of magnitude 0.45 T is directed along the +y axis. The length of each rod is L = 1.3 m, and the speeds are the same, vA = vB = vC = 2.7 m/s. For each rod, find out the magnitude of the motional emf, and indicate which end..
What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
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