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1. Find the order of magnitude of the density of the nucleus of an atom. What does this result suggest concerning the structure of matter? Model a nucleus as protons and neutrons closely packed together. Each has mass 1.67 x10-27kg and radius on the order of 10-15m.
Let h = 25.5 m and vi = 13.6 m/s. Find the speed of the ball just before it hits the ground. vf = 26.167919 m/s Find the ball's mechanical energy at the release point. KEi + PEi = _______J Find the ball's mechanical energy just before it hits the gro..
Radioactive isotopes are often introduced into the body through the bloodstream. If the decay rate in the thyroid 24.0 d later is actually measured to be 17.0Bq , what percent of the tracer went to that gland
A new fighter jet has a maneuvering speed of 209 m/s. In this jet a pilot needs to fly a vertical loop with radius 694 m. what is the maximum perceived acceleration the pilot feels
An electron with a speed of 3.6105m/s enters a uniform magnetic field of magnitude0.057T at an angle of 35° to the magnetic field lines. The electron will follow a helical path.
Identifying the three types of qualitative research most appropriate for DBA
A 6.30kg block is pushed 9.45m up a smooth 37.0? inclined plane by a horizontal force of 80.0N . If the initial speed of the block is 3.35m/s up the plane. Calculate the initial kinetic energy of the block
A Thermopane window of area 3.1 m^2 is constructed of two layers of glass, each 6 mm thick separated by an air space of 7mm. what is the heat loss through the window
A light beam traveling through air, enters a slab with n= 2.50 at a 45º angle with respect to the normal, At what angle to the normal does the ray leave the slab
If 55.0 cm of copper wire (diameter = 1.00 mm) is formed into a circular loop, at what rate is thermal energy generated in the loop
A 60 kg person drops from rest a distance of 1.20m to a platform of negligible mass supported by a stiff spring. The platform drops 6cm before the person comes to rest.
A rigid rod of mass m3 is povited at point A, and masses m1 and m2 are hanging from it, as shown. Point A L1 m3 L2 m1 m2 (a) What is the normal force acting on the pivot point? (b) What is the ratio of L1 to L2, where these are the distances from the..
a researcher measures the concentration of advil in a patients bloodstream as a function of time making measurements
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