What is the frequency of an xray with a wavelength of 2x10-10m? a) 1.5x1018hz
b) 6.67x10-19hz
c) 3x108hz
d) 1.5hz

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Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

If the textbook weighs 19.6 newtons on venus, what is the strength of gravity on venus?