Total distance covered is 47.1 m whereas displacement is zero.
<h3>Calculation:</h3>
Given,
Diameter, d = 5 m
No. of revolutions = 3
Radius, r = 5/2 = 2.5 m
To find,
Distance =?
Displacement =?
Distance covered in one revolution = 2πr
Put the values in this,
Distance = 2 × 3.14 × 2.5
= 15.7 m
Total distance covered in 3 revolution = 3 × 31.4
= 47.1 m
Displacement is the change in the position of the object or the distance between the initial and final position.
After 3 revolutions the particle comes back to its initial position. Therefore, the displacement is zero.
Hence, the total distance covered in 3 resolutions is 47.1 m whereas displacement is zero.
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Answer:
6052114.67492 m
Explanation:
v = Velocity of cosmic ray = 0.88c
c = Speed of light =
d = Width of Earth = Diameter of Earth =
When the cosmic ray is moving towards Earth then in the frame of the cosmic ray the width of the Earth appears smaller than the original
This happens due to length contraction
Length contraction is given by
The Earth's width is 6052114.67492 m
Contraction only occurs in the cosmic ray's frame of reference in the direction of the ray. But in perpendicular direction the width remains unchanged.
Hence, the width is
Answer:
35.67°
Explanation:
Given that:
angle of glance(i) = 30°
Depth of water d = 1.20 m
The height of the observer above the water is h = 3.10 m - 1.20 m
= 1.90 m
Refractive Index of water (n) = 1.33
Using Snell's Law at the water air interface;
n₁ × sin (90- i) = n₂ × sin (90 - r)
1 × cos (i) = 1.33 cos (r)
r = cos ⁻¹ (cos 30/1.33)
r = 49.4
D = h/tan (i)
D = 1.9 / tan (30)
D = 3.291 m
D' = d/tan (r)
D' = 1.2 m/ tan (49.4)
D' = 1.0285 m
∴ the angle at which the spear is to be thrown is :
x = tan⁻¹ [(h+d)/(D+D')]
x = tan⁻¹ [(1.9+ 1.2)/(3.291+1.0285)]
x = tan⁻¹ [3.1/4.3195]
x = 35.67°
∴ At an angle of 35.67° below horizontal is required for you to throw the spear in order to hit the target.
The root quadratic equation of is
What is the formula used to calculate the quadratic equation?
To solve the quadratic equation use the formula of
Find the quadratic equation by using the formula ?
On comparing with
We get ,
By using the formula,
For a quadratic equation of the form the solutions are
Apply rule,
Apply exponent rule,
if n is even
Multiply the numbers :
Add the number
Answer:
muddy water is a heterogeneous mixture, which is Suspension.