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FromTheMoon [43]
3 years ago
13

8. Before leaving the ground an airplane traveling with constant acceleration makes a run on the

Physics
2 answers:
Effectus [21]3 years ago
8 0

Answer:

\color{Blue}\huge\boxed{Answer}

<h3>B. Speed at which it leaves the ground</h3>
Andreyy893 years ago
5 0

Answer:

Explanation:

a)  s = ½at²

a = 2s/t² = 2(1800)/12² = 25 m/s²

b) v = at = 25(12) = 300 m/s

c) first second  s = ½(25)1² = 12.5 m

twelfth second s = ½(25)(12² - 11²) = 287.5 m

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Which of these would make the best telescope?
Simora [160]

Answer:A i think or D but its not c or b

Explanation:

5 0
3 years ago
A student weighing 120 lbs climbs a 12 ft flight of stairs in 9 seconds. how much power did the student create?
Alex Ar [27]
Power can be calculate through the equation,
                        Power = Force x velocity

It should be noted that velocity is calculated by dividing displacement by time. Thus, from the given in this item we can calculate for the power. 
                       Power = (120 lb) x (12 ft/9 s)
                         <em> </em><span><em>Power   = 160 lb.ft/s</em></span>
7 0
4 years ago
A box weighs 100N and its base area of 2 m2. What pressure does it exert on the ground?
kotegsom [21]

Answer:

P = F/S = 100/2 =50 (N/m2)

5 0
3 years ago
Help please physics !!
malfutka [58]

Answer:

Option A. 1 bar = 1 atm

Explanation:

Pressure has various units of measurement. Each unit of measurement can be converted to other units of measurement. For example:

1 atm = 1 bar

1 atm = 760 mmHg

1 atm = 760 torr

1 atm = 1×10⁵ N/m²

1 atm = 1×10⁵ Pa

With the above conversion scale we can convert from one unit to the other.

Considering the question given above, it is evident from the coversion scale illustrated above that only option A is correct.

Thus,

1 bar = 1 atm

5 0
3 years ago
3.) An engineer is designing the runway for an airport. Of the planes that will use the airport,
scoray [572]

Answer: 704

Explanation:Vi = 0 m/s

vf = 65 m/s

a = 3 m/s2

d = ??

vf2 = vi2 + 2*a*d

(65 m/s)2 = (0 m/s)2 + 2*(3 m/s2)*d

4225 m2/s2 = (0 m/s)2 + (6 m/s2)*d

(4225 m 2/m2)/(6 m/s2) = d

d = 704 m

5 0
3 years ago
Read 2 more answers
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