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Birth weights are normally distributed with a mean of 3422g and a standard deviation of 495g. If a hospital plans to set up special observation conditions for the lightest 4% of babies, what weight is used for the cut-separating the lightest 4% from the others?
A small rock with mass 0.12 is fastened to a massless string with length 0.80 to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45 with the vertical. Air resistance is negligible.
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
a physics professor demonstrates the doppler effect by tying a 600hz sound generator to a 1.0-m-long rop, what are the highest and lowest frequencies heard by a student in the classs room
The atmospheric density at an altitude of 2500 km is about 1 molecule/cm3. find the mean free path predicted by the equation below
a golf ball strikes a hard smooth floor at an angle of 22.1 deg and as the drawing shows rebounds at the same angle.
an airplane has a velocity relative to the air of 194 ms in a westerly direction. if the wind has a speed relative to
A certain commercial mass spectrometer is used to separate uranium ions of mass 3.92e-25 kg and charge 3.20e-19 C from related species. calculate the thermal energy produced in the cup
Calculate the transmission probability of an a particle of energy E = 5.0 MeV through a Coulomb barrier of a heavy nucleus that is approximated by a square barrier with V0 = 15 MeV and barrier width L = 1.3 X 10-14 m. Also, c..
If an astronaut can throw a certain wrench 14 {rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the similar starting speed in both places.
One electron collides elastically with a second electroninitially at rest. After the collision, the radii of theirtrajectories are 1.00 cm and 3.10 cm. The trajectories are perpendicular to a uniform magnetic field ofmagnitude 0.0580 T.
It takes light 8 minutes to get to earth from the sun. The sun is 150,000,000,000 meters away. What is the speed of light in meters per second?
a baseball batter swings the bat and applies a force of 66.95 n to the ball for a time of 0.36 s. assuming the force is
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