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Lorico [155]
3 years ago
10

A cannon fires a shell straight upward; 2.3 s after it is launched, the shell is moving upward with a speed of 17 m/s. Assuming

air resistance is negligible, find the speed (magnitude of velocity) in meters per second of the shell at launch and 5.4 s after the launch.
Physics
1 answer:
PtichkaEL [24]3 years ago
6 0

Answer:

The speed of the shell at launch and 5.4 s after the launch is 13.38 m/s it is moving towards the Earth.                    

Explanation:

Let u is the initial speed of the launch. Using first equation of motion as :

u=v-at

a=-g

u=v+gt\\\\u=17+9.8\times 2.3\\\\u=39.54\ m/s

The velocity of the shell at launch and 5.4 s after the launch is given by :

v=u-gt\\\\v=39.54-9.8\times 5.4\\\\v=-13.38\ m/s

So, the speed of the shell at launch and 5.4 s after the launch is 13.38 m/s it is moving towards the Earth.

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6 0
1 year ago
What are one of the main uses of this device ?<br><br> anwser A
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7 0
1 year ago
On which of the temperature scales does water boil at the highest numerical value? A. Celsius B. Fahrenheit C. Kelvin D. Latent
velikii [3]
Answer is C. Kelvin, Kelvin is the temperature scales does water boil at the highest numerical value. Hope it helped you, and have a great day.

-Charlie
7 0
3 years ago
Read 2 more answers
A 2.0 m conductor is formed into a square and placed in the horizontal xy-plane. A magnetic field is oriented 30.0° above the ho
Gnesinka [82]

Answer:

\phi_B = 0.216 T m^2

Explanation:

As we know that the length of the conductor is given as

L = 2 m

now if it is converted into a square then we have

L = 4a

a = \frac{L}{4} = 0.5 m

now the are of the loop will be

A = a^2 = 0.5(0.5) = 0.25 m^2

now the magnetic flux is defined as

\phi_B = BAcos\theta

here we know

B = 1.0 T

\theta = 30.0^o

\phi_B = (1.0 T)(0.25 m^2)(cos30)

\phi_B = 0.216 T m^2

5 0
3 years ago
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andrew11 [14]
It won't be able to mix because one will not get evaporated and it wont go together
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