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Paul [167]
3 years ago
14

A bolt falls off an airplane high above the ground. How far does the bolt have to fall before its speed reaches 100m/s (about 20

0 miles per hour)? You should ignore air friction in your calculation.
Physics
1 answer:
omeli [17]3 years ago
3 0
We can use the equation vf (the final velocity) =vi (the initial velocity) +at (aceleration times time)

We know the final velocity 100m/s, the initial velocity 0, and the acceleration (gravity) 9.8m/s^2. So, 100=0+9.8t. t=100/9.8
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You have 0.5 l of air at a pressure of 203 kpa and -70°c in a rigid, sealed contaainer. what is the absolute tempertaure of the
ANTONII [103]
From the information given and if the question is complete then;
Absolute temperature is the temperature in Kelvin
To convert degree Celsius to kelvin we normally add 273
that is Kelvin = deg Celsius + 273
Thus since we have been given that the air was at -70 degrees celcius;
then; - 70° C  + 273 = 203 K
 Therefore; the absolute temperature is 203 K 

5 0
3 years ago
please help asap How can carbon monoxide be properly disposed of? if your right i will give brainliest
Misha Larkins [42]
Https://www.geos.ed.ac.uk/research/subsurface/diagenesis/CO2_H2S_sequestration.html
7 0
4 years ago
An important difference between a universal and a split-phase motor is that the split-phase motor has A. two brushes attached to
olga nikolaevna [1]

An important difference between a universal and a split-phase motor is that the split-phase motor has

A. two brushes attached to the stator.

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<u>C. two windings on the stator. </u>

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6 0
3 years ago
Which would have the highest frequency of vibration? (Prove mathematically.) Pendulum A with a 200 g mass on a 1.0 m string Pend
Lera25 [3.4K]

Answer:

Pendulum B

Explanation:

The time period of a pendulum is given by :

T=2\pi\sqrt{\dfrac{L}{g}}

Case 1.

Mass, m = 200 g = 0.2 kg

Length of string, l = 1 m

Time, T_1=2\pi\sqrt{\dfrac{1\ m}{9.8\ m/s^2}}

T₁ = 2.007 Seconds

Since, f=\dfrac{1}{T_1}

f_1=\dfrac{1}{2.007}

f₁ = 0.49 Hz

Case 2.

Mass, m = 400 g = 0.4 kg

Length of string, l = 0.5 m

Time, T_2=2\pi\sqrt{\dfrac{0.5\ m}{9.8\ m/s^2}}

T₂ = 1.41 seconds

f₂=\dfrac{1}{T_2}

f₂=\dfrac{1}{1.41}

f₂ = 0.709 seconds

Hence, pendulum B have highest frequency of vibration.

3 0
4 years ago
Which of the following is an example of biological weathering
7nadin3 [17]

An example of biological weathering is the widening of gaps in rocks caused by tree roots since pressure or stress is exerted on the rocks due to the growing plant roots. The pressure is exerted by a biological process (i.e., growing roots), even though the process is physical.

 

Plants and animals and its action speeds up mechanical and or chemical weathering, which in turn causes biological weathering.

 

<span>With the help of the chemicals that are produced by the tiniest bacteria, algae and liches, the rocks which they live in are also broken down by them in order to get the nutrients they need.</span>

3 0
4 years ago
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