The sum of the forces exerted on an object of interest is 125 N. As a result, the object accelerates with an acceleration of 24.0 m/s2. The mass of the object is
A) 3000 kg.
B) 2880 kg.
C) 144 kg.
D) 0.200 kg.
E) 5.21 kg.
E
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Where did the asteroid that is believed responsible for the extinction of the dinosaurs hit the surface of the Earth?
A) in Siberia in Russia B) in the desert in Arizona C) in the middle of the Pacific Ocean D) in the Yucatan peninsula in Mexico
The oldest known fossils of single-celled organisms are
A) 4.6 billion years old. B) 3.9 billion years old. C) 3.3-3.5 billion years old. D) 1.3-1.5 billion years old.
Dark energy is speeding up the expansion of the Universe.
Answer the following statement true (T) or false (F)
Two point charges of values +3.4 mC and +6.6 mC are separated by 0.20 m. What is the electrical potential at the point midway between the two charges? (ke = 8.99 × 10^9 N×m2/C2)
a. +1.8 × 10^6 V c. +0.90 × 10^6 V b. -0.90 × 10^6 V d. +3.6 × 10^6 V