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A spaceship(Mo = 10,000 kg & Lo = 42m) is observed to be 42.2m long while traveling towards earth Determine the speed of the space ship. A radio transmission of 85.6 GHz is also observed. Determine the radio frequency emitted by the ship?
A cube of mass m = 6.55 kg is placed on an inclined plane of mass M = 10.07 kg, which makes an angle ? = 42.20° with the horizontal. What is the normal force on the inclined plane
A point charge of 20nC is placed on the x-axis at the point x = 2. Find the x-component of the electric field Ex at x = 4 and x = -1 where the coordinates are in meters
A flat stack of two materials, the first of index of refraction 1.52 and thickness 2 mm, and the second of index of refraction 1.63, What is the size (radius) of the circle of light
Estimate the change in COP of your electric food freezer when it is removed from your kitchen to its new location in your basement, which is 8 C° cooler than your kitchen. (Assume that the temperature in the kitchen is 20°C and that the temperature o..
how many days would be required to move one of the charges.
A mass m equals 4 kg on a slanted surface theta equals 30 degrees. A light rigid cord runs from mass m to pully beta equals 1/2, calculate the magnitude of the systems acceleration
a cylinder piston initially contains 5x10^-3 m^3 of helium gas, at a pressure of 1atm and witih a temperature of 50 degrees celcius. how many moles of helium is contained by the cylinder piston
The fringes observed in a double-slit interference experiment when the two slits are illuminated by white light show dispersion of both light and color, how many bright fringes can be seen on the screen
What was the absorbed dose in the carbon walls? The average mass stopping powers of graphite and CO2 for the photons are, respectively, 1.648 and 1.680 MeV cm^2/g.
A 200g mass on the end of a spring is pulled back 3 cm and released. There is a coefficient of friction between the table and mass of 0.7. The resonant frequency is 7.071 rad/sec.
A composite bar made from two different materials of equal cross-sectional areas are directly attached to each other making the bar a length of L = L1 + L2.
throughout the process the mechanical device pushing the piston to compress gas is found to expend 4 kJ of energy. What is the magnitude of the heat flow between heat reservoir and the gas and in what direction does the heat flow occur.
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