The position of John at time of 4.35 s is -1.13 m
From the given chart;
- at time, t = 0, the initial velocity, u = - 2 m/s
- at time, t = 5 s, the final velocity, v = 2 m/s
The average acceleration is calculated as follows;
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The position of John at time, t = 4.35 s is calculated as follows;
Thus, the position of John at time of 4.35 s is -1.13 m
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Answer:
2.097×10^-5 N
Explanation:
Viscosity = mass/distance×time
time (t) = mass/viscosity×distance
Mass of steel part = 200 kg
Viscosity of oil = 0.065 N.s/m^2
Distance = 0.5 mm = 0.5/1000 = 5×10^-4 m
t = 200/0.065×5×10^-4 = 6.2×10^6 s
Force (F) = mass×velocity/time = 200×0.65/6.2×10^6 = 2.097×10^-5 N
Answer: false
Explanation:
Hi, The Michelson-Morley experiment was designed to measure the extra time it took a light beam to travel "there-and-back" against the ether wind, compared to a light beam travelling "sideways across" the ether wind.
The experiment failed, there was no variation, and years later Einstein explained that there is no ether. Light is a special sort of wave which requires no medium to carry it.
Answer:
the chemical reaction will be fire and smoke