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A hockey puck impacts a goalie's plastic mask horizontally at122 m/h and rebounds horizontally off the mask at 47mi/h. If the puck has a mass of 170 gram and it is in contact with the mask for 25 milliseconds,
a) Find the average force that the puck exerts on the mask?
b) Suppose that this average force accelerates the goalie (ignore friction with the ice), determine with what speed will the goalie move, suppose she was at rest initially and has a total mass of 85 kilogram?
Monochromatic light of wavelength 416 nm passes during a diffraction grating. The third order image is separated from the central image by an angle of 64degrees. Discover the number of lines/cm in the grating.
A sample 114 nd has a mass of 0.055395 kg and emits an average of 2.36 alpha particles per second. Determine the decay constant and the half-life
A simple harmonic oscillator has a restoring force of 360 N/m and a mass of .59kg. What will be its maximum displacement from equilibrium
Two newly discovered planets follow circular orbits around a strain a distant part of the galaxy. Find the orbital period of the faster planet
Consider a fusion reaction in which a proton fuses with a neutron to form a deuterium nucleus. How much energy is released in this reaction
An aluminum rod is16.5cm long at 20°C and has a mass of 350 g. If14000J of energy is added to the rod by heat, what is the change in length of the rod
Find the pressure increase in the fliuid in a syringe when anurse applies a force of 42N to the syringe's circular piston,which has a radius of 1.1cm
an electron that has a velocity with x component 2.9 x 106 ms and y component 3.7 x 106 ms moves through a uniform
An empty rubber balloon has a mass of .0120kg. The balloon isfilled with heliumat a density of .181 kg/m^3. At this density theballoon is spherical with a radius of .5m. If the filled balloon isfastened to a vertical line, what is the tension in t..
A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point 18.9 m below the water level. Determine the diameter of the hole
two metal spheres are the same size but have different masses. they are dropoped simutaneously from a cliff. compare
A sled of mass 8 kg is on a frictionless slope inclined at 35degrees to the horizantal.It is pulled by a rope that makes anangle of 10 degrees with the slope,the tension in the rope is 40N. Find the accerelation of the sled take up the slope as thepo..
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