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Temka [501]
3 years ago
13

calculate the acceleration of Airplane that starts at rest and reaches the speed of 45M/S in nine seconds

Physics
1 answer:
andreyandreev [35.5K]3 years ago
5 0

Acceleration = (Speed or velocity) / Time

= 45/9

= 5 m/s²

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Help This is Urgent
MaRussiya [10]
I don’t use the metric system, so I used feet and then went back.

25 meters is about 82 feet.
So around 82 feet per minute (kinda slow LOL)

82 (feet per minute) x 90 (minutes) = 7380 feet (in 90 minutes)

7380 feet is equal to 2249.424 meters.

(I hope that helped)

6 0
3 years ago
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Can someone help me?
vlabodo [156]
1. Science.
2. evidence
6 0
3 years ago
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Consider two gratings with the same slit separation. The only difference between the two gratings is that one grating has 5 slit
lora16 [44]

Answer:

b. Both the gratings will produce the same separation of peaks.

e. The grating with 10 slits will produce better-defined(narrower) peaks.

6 0
4 years ago
Use your periodic table to answer the following question.
Pavel [41]
Helium has only 2 electrons in it's valence shell

So, option D is your answer.

Hope this helps!
6 0
3 years ago
Which of the following statements are true and supported by kinetic molecular theory?
Margarita [4]

Answer:

I,II, III are true

Explanation:

1. Yes

low pressure reduces the inter molecular attraction force and cause non-ideality

at high temperature frequency of collision is increase that causes loss of energy.

2. yes

v_{rms}=\sqrt{\frac{2RT}{M} }

T is temperature , more the T more will be the velocity of molecules and hence more kinetic energy.

3. Yes

Polar gases contain stronger inter molecular forces from reliable, measurable partial charges, which implies that they are more permanent, long-lasting, and therefore more prominent forces.

4. No

higher the temperature higher will be the pressure as the frequency of collision will increase and thus increasing the pressure.

6 0
3 years ago
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