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A system consists of a 5.00 kg object moving down along the y-axis at a speed of 25 m/s, as well as an 8.00 kg object. The system has a net momentum of 124 kg.m/s in the direction of the + x-axis. What is the velocity of the 8.00 kg object? Express the direction of its velocity as a counterclockwise angle to the + x-axis.
The vertical displacement due to a travelling wave moving horizontally is given by y(x,t) = 5.4cos(.4(rad/s) t (sec)) where x and y are in centimeters. The horizontal distance between the points whose phase differs by pi/3 is A. 1.05 cm B. 2.62 cm C...
A green photon ( = 551 nm) is absorbed by a free hydrogen atom, initially at rest. What is the recoil speed of the hydrogen atom
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 3.38 kg. What is the moment of inertia of the object
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 416 m/s. What is the temperature (in Kelvin) of the environment
the maximum strength of the earths magnetic field is about 6.9 x 10-5 t near the south magnetic pole. suppose we want
A ball of mass 0.330 kg is thrown upward, rising 11.1 m above the point at which it was released. Compute the average force exerted on the ball by the hand
Three identical resistors have an equivalent resistance of 30 ohms when connected in parallel. What is their equivalent resistance when connected in series
An object initially displaced 75.25 m (along the horizontal x direction) has in initial velocity downward (along the -y direction) of 57.28 cm/s. Assuming that the object is on Neptune which has an average acceleration of gravity of 11.15 m/s2, deter..
A vibrating string has a fundamental frequency of 224 Hz. The tension is then increased by a factor of2.4. What is the new value of the fundamental frequency
A river is flowing with a constant speed of 2.00 km/h. A swimmer starts at a dock, swims upstream to another dock that is 550 m away, how long does her round trip take
A mass is suspended from the ceiling of a train car by a 45.4cm long piece of string. A passenger notices that the mass is deflected 14.7cm backward as the train accelerates forward. What is the train's acceleration?
The lowest outdoor temperature ever recorded on Earth was %u2212128.6 %u25E6F, recorded at Vostok Station, Antarctica, in 1983. What is this temperature on the Kelvin scale
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