What is the near point of a farsighted person who can read a newspaper held 25 cm from his eyes when he wears 3.33 diopters glasses?
A)
1.5 m
B)
0.50 m
C)
1.9 m
D)
0.75 m
E)
0.60 m
A
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How long would it take for charged particles ejected from the sun to affect electrical systems on Earth, assuming the particles traveled at 1.6 million km/h?
A) A few minutes
B) A few hours
C) A few days
D) A few weeks
Is an activation energy required to obtain the reaction in studied in this experiment?
On average, how fast do the plates move on the Earth?
A) a few centimeters per year B) a few millimeters per century C) about 1 mile per hour D) a few kilometers per year
A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of mass 200 kg. The seal grabs onto the whale and holds fast
What is the speed of these two sea creatures just after their collision? You can neglect any drag effects of the water during the collision. A) 0.00 m/s B) 3.0 m/s C) 4.0 m/s D) 5.0 m/s E) 6.0 m/s