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lana66690 [7]
2 years ago
6

After today i might not be here no more

Physics
2 answers:
mihalych1998 [28]2 years ago
8 0

Answer:

Oh no! Why? Something wrong ?

Explanation:

Norma-Jean [14]2 years ago
6 0

Answer:

aw why? are you deleting the app for school?

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When an object is turning around, is it also at rest at the point?
Ganezh [65]

Answer:

yes

Explanation:

Depolarization

8 0
3 years ago
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How are rainbows formed? Please explain.
Flauer [41]

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when sun shines through rain

Explanation:

Rainbow is an arc of different colours that appears in the sky when sun shines through rain

4 0
3 years ago
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PLEASE HELP: An engineer is designing a runway. She knows that a plane, starting at rest, needs to reach a speed of 140mph at ta
Oliga [24]

Using kinematics we can find that the take-off distance is 6163 ft

Given parameters

  • The initial and final speed of the plane i = 0 and v = 140 mph
  • Time t = 60.0 s

To find

  • The distance to take off

The measurement system allows not to have problems when working in different units, in this case we reduce the speed units

       v = 140 mile / h (5280 ft / mile) (1h / 3600 s) = 205.34 ft / s

The kinematics allows to find the relationships between the position, the speed and the acceleration of a body, in this case the movement is in one dimension.

          v = v₀ + a t

where v and v₀ are the final and initial velocity, respectively, at acceleration and t the time

          a = \frac{v-v_o}{t}

          a = \frac{205.34 - 0}{60.0}

          a = 3.42 ft / s²

Let's use the expression

          v² = v₀² + 2 a x

Where v and v₀ are the final and initial velocity, respectively, at acceleration and x the distance traveled

              x = \frac{v^2 - v_o^2 }{2 \ a}

              x = \frac{205.33^2 - 0}{2 \ 3.42}

              x = 6163.8 ft

Let's reduce to miles

             x = 6163.8 ft (1 mile / 5280 ft)

             x = 1.17 mile

In conclusion using kinematics we can find that the take-off distance is 6163 ft

Learn more about kinematics here:

6 0
2 years ago
The 94-lb force P is applied to the 220-lb crate, which is stationary before the force is applied. Determine the magnitude and d
Makovka662 [10]

Answer

given,

force = 94 lb

weight of crate = 220 lb

Assuming the static friction be equal = 0.47

                       kinetic friction = 0.36

Maximum force applied to move the object is when object is just start to move.

F = μ N

F = 0.47 x 220

F = 103.4 lb

As the frictional force is more than applied then the object will not move.

so, the friction force will be equal to the force applied on the object that is equal to 94 lb.

hence, the direction of force will left.

8 0
3 years ago
Water in the oceans may become fresh water available to humans through the processes of
Darya [45]
<span>Water in the oceans may become fresh water available to humans through the processes of evaporation, condensation and precipitation.

In these processes, water is heated to a very high temperature until it evaporates in order to kill the germs and remove the salts which remains after water evaporation. The next step in condensing the water vapor (which is now fresh) and precipitating this vapor to be used by humans.</span>
4 0
3 years ago
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