State the Conservation of Linear Momentum
What will be an ideal response?
If the net force acting on an object is zero, its momentum is conserved.
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Fraud in science is rare because it is difficult to commit. Why is it difficult to commit fraud in science?
a. Science requires that experimental and theoretical findings be reproducible. b. All scientists are bound by a code of ethics preventing them from publishing fraudulent work. c. Scientific results are reviewed by other scientists before they are published. d. Scientific journals only allow certain highly trusted individuals to publish their work. e. a and c above
The difference in blood pressure between the head and the foot of a person who is 2.000 m tall and resting on an incline that is at an angle of 30.00 degrees to the horizontal is (density of blood is 1,060
A. 59.80 mmHg. B. 62.77 mmHg. C. 68.55 mmHg. D. 70.22 mmHg. E. 77.94 mmHg.
Which of the following statements about the Sun is an inference from a model, not an observation?
A) The photosphere emits visible light. B) The Sun emits neutrinos. C) The corona is hotter than the photosphere. D) The convection zone is cooler than the radiation zone.
The cosmic horizon is the distance beyond which there are no more stars or galaxies.
Answer the following statement true (T) or false (F)