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A person on earth notices a rocket approaching from the right at a speed of 0.82c and another rocket approaching from the left at 0.63 c. What is the relative speed among the two rockets, as measured by a passenger on one of them?
A distant galaxy emits light that has a wavelength of 557.1 nm. On earth, the wavelength of this light is measured to be 560.8 nm, Find the speed of the galaxy relative to the earth
Two spheres are launched horizontally from a 1.1m-high table. Sphere A is launched with an initial speed of 4.5 m/s. What is the time for the sphere A to hit the floor
A 4 kg hammer is accelerated at 4m/s^2 before striking a nail for 1.6 sec find the force of the hammer
An airplane is cruising at an altitude of 10 km. The pressure outside the craft is 0.311 atm; within the passenger compartment, the pressure is 1.01 atm and the temperature is 20°C. A small leak occurs in one of the window seals in the passenger c..
A football is kicked straight up into the air; it hits the ground 4.4s later. With what speed did it leave the kicker's foot
At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls away, What is the source of the centripetal force acting on the riders
What is the Lens Equation? What do o, i and f stand for in the equation and what are the five parts of the Optical Bench used in this experiment? Briefly describe what each part does.
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. what is the mass of the lead block
One end of a brass bar is maintained at 305 oC, while the other end is kept at a constant, but lower, temperature. What is the temperature of the bar at a point 0.129 m from the hot end
A steel wire on a guitar has a length of 0.500 m and a mass of 3.50 x 10^-3 kg. To what tension must the wire be tightened
A rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
A student sits at rest on a piano stool that can rotate without friction. The moment of intertia of the student-stool system is 4.1 kg*m^2. What is the resulting angular speed of the student
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