Use the displacement law, peak wavelength = 0.0029/T =0.0029/30000 = 97nm
Answer:
the number of additional car lengths approximately it takes the sleepy driver to stop compared to the alert driver is 15
Explanation:
Given that;
speed of car V = 120 km/h = 33.3333 m/s
Reaction time of an alert driver = 0.8 sec
Reaction time of an alert driver = 3 sec
extra time taken by sleepy driver over an alert driver = 3 - 0.8 = 2.2 sec
now, extra distance that car will travel in case of sleepy driver will be'
S_d = V × 2.2 sec
S_d = 33.3333 m/s × 2.2 sec
S_d = 73.3333 m
hence, number of car of additional car length n will be;
n = S_n / car length
n = 73.3333 m / 5m
n = 14.666 ≈ 15
Therefore, the number of additional car lengths approximately it takes the sleepy driver to stop compared to the alert driver is 15
Acceleration is the change in velocity
Answer:
A. Technician A
Explanation:
As we know that ,engine generate a huge amount of energy in the inside the combustion cylinder .Only some amount of energy is used for the power consumption and remaining energy rejected to the surrounding ,That is why it become very important to provide proper cooling for the engine cylinder.By maintaining the proper cooling the engine cylinder can save from the high thermal stresses.
Generally water is used for the cooling for large size engine like truck ,bus tractor etc but for the small size engine ,air is used to for cooling of the engine.
That is why only technician A is correct.
Answer:
Gravity overcomes the hex nut's stationary inertia and moves the nut straight down into the bottle.
Explanation:
Hope this helps.
Have a good night ma´am/sir.
Be safe!
