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garik1379 [7]
1 year ago
11

6. 25 grams of sodium chloride is placed into a beaker. The reading on the digital balance says that

Physics
1 answer:
eduard1 year ago
6 0

Answer:

<u>149 grams to 3 sig figs</u>

Explanation:
Beaker + NaCl = 155 grams

                NaCl = 6.25 grams

Subtract the NaCl

 155 g - 6.25 g = 148.75 grams is the mass of the beaker.  But there are only 3 sig figs, so the mass should be reported as 149 grams.

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A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster go
KIM [24]

Answer:

9.6m/s

Explanation:

Using the equation S=d/t where s=speed, d=distance, and t=time

plug in the known variables

S=120m/12.5s

S=9.6m/s

4 0
3 years ago
The Hubble telescope’s orbit is 5.6 × 105 meters above Earth’s surface. The telescope has a mass of 1.1 × 104 kilograms. Earth e
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8 0
4 years ago
Student swings a small rubber stopper attached to a string over her head in a horizontal, circular path. The string is 1.50 mete
harkovskaia [24]

Answer:

v = 18.84 m/s

Explanation:

Given that,

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Let we need to find the average speed of the rubber stopper. It can be calculated as follows :

v=\dfrac{d}{T}

d is distance, d=2\pi r and 1/T = f (frequency)

v=2\pi rf\\\\=2\pi \times 1.5\times 2\\\\=18.84\ m/s

So, the average speed of the rubber stopper is 18.84 m/s.  

4 0
3 years ago
Which of the following is true for a parallel circuit?
siniylev [52]
B. The voltage is the same across all resistors in the circuit.
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Cellular respiration is an example of a chemical reaction where energy is released. Which of the following is a reaction where e
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