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Vinil7 [7]
3 years ago
5

Cold water_____ than warm water.

Physics
2 answers:
bogdanovich [222]3 years ago
7 0
Has higher salinity
Usimov [2.4K]3 years ago
4 0
Has higher salinity
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Energy; Resources and Forms<br>how do you measure joules ?​
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joules = newtons x meters

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Work is equal to the force that is exerted, multiplied by the distance over which it is exerted.

In equation form:

joules (work) = newtons (force) x meters (distance) ,

A joule is the unit of work.

Hope this helped!! :)

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Why does lightning hit taller objects?
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because it has this rod thats metal on top of it so thats why it hits them.

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Two water jets are emerging from a vessel at a height of 50 centimeters and 100 centimeters. If their horizontal velocities at t
scoundrel [369]

Answer: The correct answer is option (D).

Explanation:

Vertical distance  of first water jet = y_1=50 cm

Vertical distance of second water jet = y_2=100 cm

Horizontal velocity of first water jet =u_y_ 1=1 m/s

Horizontal velocity of second water jet = u_y_2=0.5 m/s

Vertical distance of first water jet:

y_1=(u_y_1)t_1+\frac{1}{2}gt_1^2

u_y_1=0,(u_y_1)t_1=0

t_1=\sqrt{\frac{2y_1}{g}}...(1)

Similarly, Vertical distance of second water jet:

y_2=(u_y_2)t_2+\frac{1}{2}gt_2^2

u_y_2=0,(u_y_2)t_2=0

t_2=\sqrt{\frac{2y_2}{g}}...(2)

Horizontal distance of first water jet:

x_1=(u_x_1)t_1+\frac{1}{2}at_1^2

There is no acceleration in horizontal direction.

a=0,at_1^2=0

x_1=(u_y_1)t_1...(3)

Horizontal distance of second water jet:

x_2=(u_x_2)t_2+\frac{1}{2}at_2^2

a=0,at_2^2=0

x_2=(u_x_2)t_2...(4)

On dividing (3) and (4):

\frac{x_1}{x_2}=\frac{(u_y_1)t_1}{(u_y_2)t_2}

\frac{x_1}{x_2}=\frac{u_y_1}{u_y_2}\times\frac{\sqrt{\frac{2y_1}{g}}}{\sqrt{\frac{2y_2}{g}}}}=\frac{u_y_1}{u_y_2}\sqrt{\frac{y_1}{y_2}}

(from (1) and (2))

\frac{x_1}{x_2}=\frac{1 m/s}{0.5 m/s}\sqrt{\frac{50 cm}{100 cm}}=1.41:1

Hence, the correct answer is option (D).


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Liquid has no definite volume or shape.

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