Which type of friction occurs between moving machine parts bathed in oil?

1. static friction

2. rolling friction

3. fluid friction

Motion is a change in direction. True or False?

A freight train rolls along a track with considerable momentum. If it rolls at the same speed but hastwice as much mass, its momentum isa. zero. b. doubled. c. quadrupled. d. unchanged.

What in the atmosphere hold in the amount of heat needed to keep earth livable

What is the resistance of a 4.4-m length of copper wire 1.5 mm in diameter? The resistivity of copper is 1.68*10-8Ω⋅m.

If light travels at 3 · 108 m/s and its frequency is 6 · 1015 Hz, then its wavelength is: A) 10 · 107 m B) 5 · 10-8 m C) 5 · 10-7 m D) 10 · 10-7 m

A 5.00-kg howler monkey is swinging due east on a vine. It overtakes and grabs onto a 6.00-kg monkey also moving east on a second vine. The first monkey is moving at 10.0 m/s at the instant it grabs the second, which is moving at 7.00 m/s.

One of the heating systems we talked about in this course comprises of a system of ducts. What is the process by which heat is transferred in this system? a. Conduction b. Convection c. Radiation d. None of the above

If the north pole of a magnet in a compass is attracted to Earth's geographic north, what must be the polarity of Earth's magnetic north pole? A. north B. south C. It can't be determined from the information given.

A canoe started its trip at 8 am. If the cannoe travelled at a speed of 70 mph how far did it travel by 1:36 pm?

1. Tariff of 1828 John C. Fremont 2. abolitionist who led the raid on Harper's Ferry John Brown 3. published The Liberator Santa Anna 4. Underground Railroad Harriet Tubman 5. died at the Alamo William Lloyd Garrison 6.