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At 6 degrees Celsius a metal rod is 1.5 m total length with half the length steel and the other half brass. The rod is heated to 150 degrees Celsius. What is the total change in length?
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of the chamber
A model rocket is fired vertically from rest. It has a net acceleration of 18.5 m/s2. Ignoring air resistance, how high does the rocket travel
a uniform electric field of magnitude 7.5times105 nc points in the positive x direction.find the change in electric
An unknown substance has a mass of 0.125 kg and an initialtemperature of 104.4°C. calculate the specific heat of the unknown substance
A particular organ pipe can resonate at 264 Hz, 440 Hz, and 616 Hz, however not at any other frequencies between 264 and 616 Hz. (a) Is this an open or closed pipe? (b) What is the fundamental frequency of this pipe?
A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. Calculate the net force on the parachutist
a toy is launched upward with a spring.its launch speed is 114msupwardand it is under no power once launched.while
a 310-n child is in a swing that is attached to a pair of ropes 1.80 m long. find the gravitational potential energy of
An object of mass M= 4.3 kg is suspended from a spring of constantk = 1.42 N/m. What is the displacement of the end of the spring dueto the weight of the mass?
A heavy flywheel rotating on itscentral axis is slowing down because of friction in its bearings. find its rotational speed at the end of the second minute
A Carnot-efficiency engine operating between a reservoir of liquid mercury at its melting point and a colder reservoir extracts 15.0 J of heat from the mercury and does 4.0 J of work during each cycle. What is the temperature of the colder reservo..
The maximum characteristic x-ray photon energy comes from the capture of a free electron into a K shell vacancy. What is this photon energy in keV
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