The hailstone will hit the earth in 4.04 seconds.
we move 9.8 meters per second faster thanks to gravity. we start to fall after one second at 9.8 m/s. we start falling at 19.6 m/s after two seconds, and so forth.
From the query, the following information may be deduced:
Height (H) = 120 m
Gravitational acceleration (g)=9.8 m/s2.
Time (t)=?
It is possible to determine the hailstone's impact time as:
h=1/2 gt²
120= 1/2 x 9.8 x t²
120x2/9.8=t²
t²=24.48
t=4.94 s
therefore, the calculated time taken is 4.94 s.
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Find the angles which the vecotr <span><span><span><span><span>v </span><span>⃗ </span></span>=3i−6j+2k</span> </span><span><span>v→</span>=3i−6j+2k</span></span>
makes with the coordinate axes.
If the angles are <span><span><span>α,β,θ</span> </span><span>α,β,θ</span></span>
, show that for any 3-dimensional vector:
. . . <span><span><span><span><span>cos </span><span>2 </span></span>α+co<span><span>s </span><span>2 </span></span>β+<span><span>cos </span><span>2 </span></span>θ=1</span> </span><span><span>cos2</span>α+co<span>s2</span>β+<span>cos2</span>θ=1</span></span>
Had you included the picture, we would also know the height. Without that, we can't calculate the volume, and without the volume, we can't calculate the density.
"SEM" or Scanning Electron Microscope is the one among the following choices given in the question that <span>gives the highest amount of magnification. The correct option among all the options that are given in the question is the fourth option or the last option. I hope the answer has come to your help.</span>
Engineering controls could involve altering the weight of the products, adjusting the heights of the work surfaces, or getting lifting equipment. Administrative controls are workplace policies, practices, and processes that reduce the likelihood of risky situations for employees.
<h3>What are Engineering controls?</h3>
- Engineering controls are methods for preventing dangerous situations for workers by erecting a barrier between them and the danger or by ventilating the area to remove any hazardous materials.
- Instead of depending on employee behavior or mandating that employees wear safety gear, engineering controls entail making physical changes to the workplace itself.
<h3>What is Administrative controls?</h3>
- Administrative controls are policies, procedures, shift designs, or training that reduce the threat of a hazard to a person.
- Typically, administrative controls aim to alter people's behavior (such as that of manufacturing workers) rather than eliminating the real risk or provide personal protective equipment (PPE).
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