A projectile is projected from the origin with a velocity of 25.0 m/s at an angle of 45.0 degrees above the horizontal. What is the time it takes for the projectile to hit the ground?
A. 1.95 s
B. 2.22 s
C. 2.75 s
D. 3.04 s
E. 3.61 s
E. 3.61 s
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Uniform Electric Fields: Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential at a given point in the field is 80 V, what is the potential at a point 1.0 m directly east of the point?
A. 15 V B. 30 V C. 90 V D. 130 V
Might reverse osmosis be used to obtain fresh water from a sugar-water solution?
A) No, osmosis and reverse osmosis only apply to aqueous solutions containing ions. B) Yes, reverse osmosis can be applied to any aqueous solution for the generation of fresh water. C) No, the molecular attractions between sugar and water are too strong. D) Yes, because sugar molecules are smaller than sodium or chloride ions.
From the discussion in class and the reading for the Thomas Frieden article which of the examples below best describes a default behavior?
What will be an ideal response?
Novae are more closely related to type II than to type I supernovae
Indicate whether the statement is true or false