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3 years ago

if air has dry bulb temperature of 2 and the wet bulb temperature of -2 . what is the relative humidity

Physics

1 answer:

Nezavi [6.7K]3 years ago

3 0

100% I think that is the answer.

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Children slide down a friction-less water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at p

Pachacha [2.7K]

Answer:

0.84 m

Explanation:

0.84 m

Explanation:

We are given that

Height,h=1.80 m

Horizontal distance,L=2.43 m

We have to determine the height h of the water slide.

Initial velocity,u=0

$t=\sqrt{\frac{2h}{g}}$

Where $g=9.8 m/s^2$

$t=\sqrt{\frac{2\times 1.8}{9.8}}=0.6 s$

$v=\frac{distance}{time}=\frac{2.43}{0.6}=4.05 m/s$

$h'=\frac{v^2}{2g}$

$h'=\frac{(4.05)^2}{2\times 9.8}$

$h'=0.84 m$

7 0

3 years ago

Used for measurement of physical quantity is called the unit of that<br> quantity

nalin [4]

Answer:

Unit

Explanation:

The reference standard used for the measurement of physical quantity is called the unit of that quantity.

Most units follow an agreed system of expressing quantities across all instances of such quantity.

It is necessary to standardized units because it makes comparison easier.
It also makes scientific communication easily discernible.

3 0

3 years ago

A gas heated to millions of degrees would emit

makkiz [27]

A gas heated to millions of degrees would emit mostly x-rays.

4 0

3 years ago

A simple harmonic oscillator of amplitude A has a total energy E.

jeka57 [31]

Answer:

a) $K=E-\frac{kA^2}{18}$

b) $U=\frac{kA^2}{18}$

Explanation:

The law of conservation of mechanical energy states that total mechanical energy remains constant during oscillation. Mechanical energy is defined as the sum of kinetic energy and potential energy:

$E=U+K\\E=\frac{kx^2}{2}+\frac{mv^2}{2}$

a) The position is one-third the amplitude. So, we have $x=\frac{1}{3}A$ . Replacing and solving for K

$E=\frac{k(\frac{1}{3}A)^2}{2}+K\\E=\frac{kA^2}{18}+K\\K=E-\frac{kA^2}{18}$

b) The potential energy is defined as:

$U=\frac{kx^2}{2}$

Replacing:

$U=\frac{k(\frac{1}{3}A)^2}{2}\\U=\frac{kA^2}{18}$

4 0

3 years ago

What happens to the speed of a ball as it rises from the ground to a girls Hand?

wolverine [178]

The speed stops as it hits the girls hand but speed reduces as it reaches her hand and increases at the beginning of the movement

7 0

4 years ago

Read 2 more answers