Which statement is not true about mass movements?
a. gravity is the driving force behind all mass movements.
b. mass movements always create landslides.
c. some mass movements are too slow to be seen.
d. mass movements are always downslope.

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3