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3 years ago

Which statement best describes the temperature of the oceans surface water.

Physics

2 answers:

Julli [10]3 years ago

7 0

Answer: high latitudes have the coldest water. I took the test Its A

Explanation:

scZoUnD [109]3 years ago

5 0

The answer is A high latitudes have the coldest water.

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An object is placed of 20cm from a concave mirror whose focal length is 10cm. what is the distance of image formed ?

Paraphin [41]

Answer:

Answer 43cm

Explenation:

if you divide it to 4 it will convert to 43 so answer is 43cm if this wrong im sorry but mine is perfect thankss :)

6 0

3 years ago

During a gust of wind, the blades of the windmill are given an angular acceleration of α=(0.2 θ) rad/s2, where θ is measured in

lord [1]

Answer:

7.5 rad/s

Explanation:

$\alpha$ = angular acceleration = (0.2) θ

Angular acceleration is given as

$\alpha =\frac{dw}{dt}$

$\alpha =\frac{dw}{d\theta }\frac{d\theta }{dt}$

$\alpha d\theta = w{dw}$

$(0.2)\theta d\theta = w{dw}$

Integrating both side

$(0.2)\int_{0}^{4\pi }\theta d\theta = \int_{5}^{w}w{dw}$

$15.8 = \frac{w^{2} - 25}{2}$

w = 7.5 rad/s

3 0

3 years ago

It is common to see birds of prey rising upward on thermals. The paths they take may be spiral-like. You can model the spiral mo

bezimeni [28]

Radius of circle of spiral path = 6 m

Time period = 5 s

So the total length of the path = $2 \pi R$

$distance = 2 \pi R$

$distance = 2 \pi *6$

$distance = 12\pi$

time taken by bird to cover the distance = 5 s

so the speed of the bird = distance / time

$v = \frac{distance}{time}$

$v = \frac{12\pi}{5}$

$v = 7.54 m/s$

so the tangential speed in horizontal direction = 7.54 m/s

vertical velocity by which it is rising upwards = 3 m/s

so the angle with the horizontal for net speed is given as

$\theta = tan^{-1}\frac{v_y}{v_x}$

$\theta = tan^{-1}\frac{3}{7.54}$

$\theta = 21.7 degree$

so velocity vector will make 21.7 degree with the horizontal

8 0

4 years ago

A downward force of magnitude 5 n is exerted on the book by the force of.

MakcuM [25]

Answer:

Gravity (perhaps)

Explanation:

Without a further description or a diagram, I would guess the downward force would be gravity.

3 0

2 years ago

An influence that can deform a flexible abject or change the motion of an object with mass.

algol13

Answer:

An influence that can deform a flexible abject or change the motion of an object with mass. Answer is A force

xXxAnimexXx

7 0

3 years ago