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A base on Planet X fires a missile toward an oncoming space fighter. The missile's speed according to the base is 0.81 c. The space fighter measures the missile's speed as 0.93 c.
How fast is the space fighter traveling relative to Planet X?
An arrow is shot off the top of a bridge of unknown height. The speed of the arrow at launch is known to be 30.0 m/s. How tall is the bridge
Upstream of a normal shock in air the pressure is 14.7 psia and the temperature is 528R. Downstream of the shock the air pressure is 76.8 psia. What is the Mach number upstream of the shock
An ac series circuit has an impedance of 196 ? , and the phase angle between the current and the voltage of the generator is ? = -72°. The circuit contains a resistor and either a capacitor or an inductor
You are standing on a scale inside an elevator. The scale reads exactly your weight. What could be the velocity of the elevator, What is the acceleration of the elevator
if the magnitude of the force between two identical 100. microcoulomb negative charges is 9N. How far apart are the charges
One solenoid is centered inside another. The outer one has a length of 47.0cm and contains 6800 coils, Find the emf induced in the inner solenoid
The orbits of synchronous communications satellites have been chosen so that viewed from Earth they appear to be stationary. Find the radius of the orbits
Two astronauts of equal mass 76 kg are holding on to opposite ends of a straight rope in space. The length of the rope between them is 18meters. What is the new angular velocity of the two astronauts
Determine the angular speed of a speck of dirt located 1.97 cm from the center of a CD rotating inside a CD player at 263 rpm.
A compact 60.00 kg object is attached to one end of a horizontal 40kg uniform steel tube 2.40 m long. What is the distance from the loaded end to the center of gravity of object-tube system?
A stone with a mass of 0.900 kg is attached to one end of a string 0.900 m long. The string would break if its tension exceeds 60-N. The stone is whirled in a horizontal circle on a frictionless tabletop.
Two charged bodies exert a force of .145N on each other. If they are now moved so they are one fourth as far apart, what force is exerted.
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