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3 years ago

Are headlands are formed through wave deposition true orfalse

Physics

2 answers:

KengaRu [80]3 years ago

6 0

Answer: False

Explanation:

The given statement is false as, the headlands are not form by the wave deposition. The headlands are mainly the part of the shore which sticks out in the oceans. It is basically formed on the harsh coastlines with the help of the bands of the rocks.

The headlands are form with the alternating band of the rocks during the ocean attack in the part of the coastlines. The headlands are also known as coastal land form and it is characterized as follows:

Rocky shores
Breaking waves
Steep sea cliff
Intense erosion

sp2606 [1]3 years ago

5 0

the answer is false hope this helps :]

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At a certain instant, a rotating turbine wheel of radius RR has angular speed ωω (measured in rad/srad/s). What must be the magn

jonny [76]

Answer:

Explanation:

The magnitude of the acceleration makes an angle of 30° with the tangential velocity.

Resolving the acceleration to tangential and radial acceleration

at = aCos30 = √3a/2

ar = aSin30 = ½a

a = 2•ar

Then, the tangential acceleration is the linear acceleration, so the relationship between the tangential acceleration and angular acceleration is given as:

at = Rα

Then, α = at/R

since at = √3a/2

Then, α = √3 at/2R, equation 1

The radial acceleration is given as

ar = ω²R

Note that, at² + ar² = a²

at = √(a²-ar²)

Back to equation 1

α = √3 at/2R

α = √3√(a²-ar²)/2R

α = √3√(a²-(w²R)²)/2R

α = √3(a²-w⁴R²) / 2R

Also, a = 2•ar = 2w²R

Then,

α = √3((2w²R)²-w⁴R²) / 2R

α = √3(4w⁴R²-w⁴R²) / 2R

α = √3(3w⁴R²) / 2R

α = √9w⁴R² / 2R

α = 3w²R / 2R

α = 3w²/2

7 0

3 years ago

Ecology is the study of

Anettt [7]

Answer:

Organisms and their environment

8 0

3 years ago

Trying to beat the heat of the last summer, a physics grad student went to the local toy store and purchased a plastic child's s

svp [43]

Answer:

625 piece.

Explanation:

Let n be the required no of piece

200 litre = 200 x 10⁻³ m³ = 200 x 10⁻³ x 10³ kg = 200 Kg

mass of ice piece = n x 30 x /1000

Heat lost by ice pieces = (n x 30) / 1000 x ( 80 + 1 x 16⁰C)

Heat gained by water = 200 x 1 x 9⁰C

Heat lost = Heat gained

(n x 30) /1000 x ( 80 + 16 ) =200 x 9

2.88 n = 1800

n = 625

6 0

4 years ago

A railroad car whose mass is 30,000. kg is traveling with a velocity of 2.2 m/s due east and collides with a second railroad car

Yakvenalex [24]

Answer:

V = 1.1 m/s

Explanation:

given,

mass of railroad car 1 , m = 30,000. kg

travelling at the speed , u = 2.2 m/s

mass of car 2, M = 30,000. kg

initial speed, u' = 0 m/s

final speed of the car after collision, V = ?

using conservation of momentum

m u + M u' = (M+m)V

30000 x 2.2 + 0 = (30000 + 30000) V

60000 V = 66000

$V= \dfrac{66000}{60000}$

V = 1.1 m/s

he velocity of the two cars is equal to V = 1.1 m/s

3 0

4 years ago

Johnson is dragging a bag on a ice surface. He pulls on the strap with a force of 112 N at an angle of 45° to the horizontal to

Nady [450]

Answer with Explanation:

We are given that

Force=F=112 N

$\theta=45^{\circ}$

Distance, $s=84 m$

Time, t=3.33 minutes

We have to find the work done by Johnson on the bag and the power generated by Johnson.

Work done, W= $Fscos\theta$

Using the formula

Work done, W= $112\times 84cos45=6652.46 J$

Power, P= $\frac{W}{t}=\frac{6652.46}{3.33\times 60}=33.3 watt$

Using 1 minute=60 s

Hence, the power generated by Johnson=33.3 watt

5 0

3 years ago