The North Celestial Pole is 35 ? above your northern horizon. This tells you that:
a. you are at latitude 35 ? N.
b. you are at longitude 35 ? E.
c. you are at latitude 35 ? S.
Ans: a. you are at latitude 35 ? N.
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A sphere is constructed of two concentric pieces. The inner part is a solid sphere of radius 10.0 cm made of a material with density 4000 kg/m3. The outer part is a spherical shell with inner radius 10.0 cm and outer radius 20.0 cm
The outer shell has a density 9000 kg/m3. (a) What is the mass of this sphere? (b) What is the average density of this sphere?
Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.The kinetic energy of the crate is __________
Fill in the blank(s) with correct word
An object with a mass of 10 kg is moving along a horizontal surface. At a certain point it has 40 J of kinetic energy
If the coefficient of friction between the object and the surface is 0.40, how far will the object go beyond that point before coming to a stop? Use g = 10 m/s2. A) 17 cm B) 42 cm C) 60 cm D) 5.7 cm E) 100 cm
An automobile initially moving 72. km/hr jams the brakes and skids to a stop in a distance of 24. meters on a dry pavement but stops in 81.6 m for a wet pavement (the auto weighs 2211. lbs, neglect reaction delay)
(a) What is the coefficient of friction for dry weather? (b) What is the coefficient in wet weather conditions? (c) Is this the STATIC or the KINETIC coefficient?