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Naddika [18.5K]
3 years ago
13

A boy does 465 J of work pulling an empty wagon along level ground with a force of 111 N [31o below the horizontal]. A frictiona

l force of 155 N opposes the motion and is actually slowing the wagon down from an initial high velocity. The distance the wagon travels is
Physics
1 answer:
vovikov84 [41]3 years ago
6 0
Can you list the answer's
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According to Bernoulli's Principle what statement below is How does a wing achieve
Blababa [14]

<em>your answer would be <u>C</u></em>

<em>by forcing air to move faster over the top of the wing thus creating higher pressure below the wing and lower pressure above the wing</em>

hope this helped you- have a good day bro cya)

3 0
3 years ago
An engine manufacturer makes the claim that the engine they have developed will, on each cycle, take 100J of heat out of boiling
Alborosie

Answer:

Explanation:

Intake heat, QH = 100 J

output heat, Qc = 20 J

Work, W = 80 J

TH = 100°C = 373 K

Tc = 10°C = 283 K

TH/ Tc =  373 / 283 = 1.318

QH/Qc = 100 / 20 = 5

for a heat engine, those ratios should be same. so temperature is not correct.

4 0
4 years ago
Help for physics
12345 [234]

Answer:

A. 5 m/s

Explanation:

From the graph, for the first 2 seconds, the graph is a straight line meaning that the slope is a constant.

Average speed of an object is the rate of change of position. Here, the position of the object changes from 0 m to 10 m for a time interval of 2 seconds.

The change in position (\Delta x) and time interval (\Delta t) are given as:

\Delta x=10-0=10\ m\\\Delta t=2-0=2\ s

Therefore, the average speed (s_{avg}) is given as the ratio of the total change in position and the time interval for the change.

s_{avg}=\frac{\Delta x}{\Delta t}=\frac{10-0}{2-0}=\frac{10}{2}=5\ m/s

Hence, the average speed is 5 m/s.

8 0
3 years ago
Read 2 more answers
How far from the nucleus in angstroms (1 Å = 10-10 m) is the electron in a hydrogen atom if it has an energy of -8.72 * 10-20 J?
olganol [36]

Answer:

1200

Explanation:

7 0
3 years ago
Kalisha is going to cut the remaining 21 1/2 buns into thirds. How many 1/3 size buns will she have?
baherus [9]
Total buns = 21 1/2 = 43/2 buns
1/3 size buns would be: 43/2 / 1/3 = 43*3 / 2 = 129/2

In short, Your Answer would be 129/2 or 64 1/2 or 64.5

Hope this helps!
6 0
3 years ago
Read 2 more answers
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