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diamong [38]
3 years ago
15

In a paragraph, explain three differences between a science and a pseudoscience.

Physics
1 answer:
Tju [1.3M]3 years ago
3 0

Answer:

Three differences between a science and a pseudoscience are that scientific theories must be falsifiable, and pseudoscientific theories aren't falsifiable, you must be able to reproduce results, and pseudoscientific results can't be reproduced, and theories must be grounded in scientific research.

Explanation:

i think

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A 20-N force applied to the handle of a door produces a 44-N output force. What is the AMA of the handle?
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44 N / 20 N
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The radio waves of a particular AM radio station vibrate 680,000 times per second. What is the wavelength of the wave?
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A thin layer of till that blankets the landscape after a glacier melts is called
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8 0
4 years ago
Assume that block A is accelerating with block B at a rate of 0.800 m/s2 along a frictionless surface. What is the mass of both
zlopas [31]

Answer:

The mass of A and B together is 125kg

Explanation:

To solve this problem, we set up the equations expressing the net force acting on A and B (forces acting to the right are +, those acting to the left are -):

m_B\cdot a_B=F - F_{fr}\\m_A\cdot a_A = F_{fr}\\a_A = a_B

The net force acting on B is due to the acting pull force 100N less friction force caused by A. The net force on A is due to the friction force caused by the block B. Since we know both blocks accelerate at the same rate, the system can be solved easily:

(m_B+m_A)\cdot a_B=F\\(m_B+m_A)\cdot 0.800 \frac{m}{s^2}=100N\implies\\m_B+m_A = \frac{100N}{0.800\frac{m}{s^2}}kg= 125kg

Of course, alternatively, in this very simple case you could consider A+B a single object being pulled with 100N, and obtain the same results by diving the pull force by the acceleration.

6 0
4 years ago
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