Einstein is probably most known for his equation E = mc2, where E = the energy of a particle of mass = m, and c = the speed of l
1 answer:
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Answer:
1 valence electrons
11 prontons
12 neutrons
Explanation:
1 valence electrons
p = 11
11 prontons
A = p + n
A = 22,99 = 23
23 = 11 + n
n =
12 neutrons
Answer:
Explanation:
Given
final velocity at takeoff
Acceleration of the plane can be
Initial velocity is zero for the plane i.e.
Using the equation of motion
Thu,s the minimum length must be
Work done by the sprinter in first 2.5 s will be 702.699 J.
Work done is the product of force and distance covered.
- Mathematically, W = Force * Distance
Mass of the sprinter = 58 kg
Distance covered by the sprinter = s = 60 m
Total time taken by the sprinter = t = 7.8 s
- According to the Equations of motion S = ut +
u = initial velocity = 0
a = constant acceleration
60 =
60.84 a = 60 * 2
a = 1.97
For a = 1.97 and t = 2.5 s
d =
Here also u is '0' because the distance is being measured from the starting point.
d =
d = 6.15 m
Work done by the sprinter = F * d
Force = mass * acceleration
F = 58 * 1.97
F = 114.26 N
distance for first 2.5 sec is 6.15 m
Therefore Work done = 6.15 * 114.26
W = 702.699 J
Work done by the sprinter is 702.699 J.
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