Answer:
They're are useful in providing larger frictional force
Explanation:
The football shoes have spikes or studs because the studs or spikes provides larger frictional force than normal shoes while running on the grass.
The studs helps to prevent a player from slipping on the grass and help to run faster and change direction quickly without slipping.
Answer:
The speed of elevator fast and slows down shows through the diagram.
Explanation:
Given that,
Amanda has just entered an elevator. The elevator rises and stops at the third floor.
Let us consider the elevator at rest then the speed will be zero.
When elevator start from rest then the speed increases with constant acceleration and near the third floor it slow down with constant deceleration and finally becomes at rest at third floor.
We need to draw the diagram distance and time
Using given data,
First, the displacement A to B will be increases fastly and B to C the displacement increases slowly slowly.
Hence, The speed of elevator fast and slows down shows through the diagram.
Answer:
total amount of fluoride 3.6 *10^6 g
Explanation:
we know that
volume of reservoir
=
= 2.25*10^6 m^3
denso=ity of water = 1000 kg/m3
mass of water = 1000*2.25*10^6
= 2.25*10^9 kg = 2.25*10^12 g
fluoride 1.6 ppm
total amount of fluoride
= 3.6 *10^6 g
Aromatherapy based treatment can offer impermanent help when nasal and sinus tissue drainage blockage and pressure for Mike.
<u>Explanation:</u>
Nasal and sinus tissues provide stuffy nose and pain or pressure in several areas around the face or teeth. There's normally a nasal release that might be yellow, green, or clear. You may likewise have exhaustion, the issue with a feeling of smell or taste, hack, sore throat, terrible breath, migraine, torment when you twist forward, and fever.
For this issue, Mike can utilize Aromatherapy based treatment that can offer some quick help with discomfort on the blocked nose and migraine. During this stage, mike ought to breathe in some restorative or common smell to control his sufferings. Fragrance, for example, Peppermint, Eucalyptus, Tea tree, Oregano, Clary wise, Lavender, Rosemary, and so forth are a great idea to breathe in.
Answer:
v = √ k e²/m r
Explanation:
From the classical point of view the force between the nucleus and the electron is electrostatic
F = q E
q = e
we apply Newton's second law
F = m a
where the centripetal accelerations
a = v² / R
we substitute
e E = m v² / r
v² = ( e/m E r)
the electrioc field is
E = k q/r²
v² = e/m k e/r
v = √ k e²/m r