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3 years ago

Why should a rain gauge be raised 30cm above the ground

Physics

2 answers:

Mrrafil [7]3 years ago

5 0

Explanation:

The rain gauge is normally placed in the ground, leaving the top of the funnel above ground – about 30 cm above the ground so that it can collect water into the container or jar. ... Rain gauges should be placed in an open area where there are no buildings, trees, or other obstacles to block the rain.

Mrrafil [7]3 years ago

5 0

It is an instrument used for determining the depth of precipitation that occurs over a unit area. ... A graduated measuring glass is used for determining the amount of precipitation. For the measurement of rainfall, the rain gauze should be placed 30 cm above the ground to prevent the splashing of rainwater

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Suzie is 2 meters away from the center of a see saw and she weighs 400 N. Where on the other side would Timmy, who weighs 800 N,

Mademuasel [1]

Answer:

Timmy is 1 meters away from the center.

Explanation:

Given:

Distance of Suzie from center = 2 m

Weight of Suzie = 400 N

Weight of Timmy = 800 N

The see saw is balanced

To find the distance of Timmy from the center.

Solution:

Since the see saw is balanced,

So, <em>the sum of clockwise moment = Sum of anticlockwise moments </em>

Moment is given by:

⇒ $Force\times Perpendicular\ distance\ from\ the\ center$

Let Suzies have moment in clockwise direction.

Moment of Suzie would be = $400\ N \times 2\ m= 800\ Nm$

Timmy would have moment in anticlockwise direction.

Let Timmy be $l$ meters away from center

Moment of Timmy would be = $800\ N\times l\ m=800l\ Nm$

Since, the see saw is balanced, the system is in equilibrium.

Thus, we have,

<em>Anticlockwise Moment = Clockwise moment</em>

$800l=800$

Dividing both sides by 800.

$\frac{800l}{800}=\frac{800}{800}$

$l=1\ m$

Thus, Timmy is 1 meters away from the center.

6 0

4 years ago

Which part of vernier caliper is used to measure internal diameter of cylinder

BlackZzzverrR [31]

Answer:

Circled in Red...plus the scales, of course.

Explanation:

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3 years ago

A superconductor performs best at ______.

vlada-n [284]

Answer:

Explanation:

Superconductors perform best at very cold temperatures because resistivity of this kind of materials decays drastically with temperature. Chromium is most likely to be the best conductor of electricity because it belongs to the Transition Metal group of the periodic table

3 0

3 years ago

When a mass of m = 29 kg is hung from the middle of a fixed straight aluminum wire, the wire sags to make an angle of 12∘ with t

Anon25 [30]

The solution to the given question is that the radius of the wire will be 0.378 millimetre approximately

At equilibrium,

Lets assume Tension T in the wire

mass of the block is given as 29 Kg

T sin 12° + T sin 12° = mg

T sin 12° + T sin 12° = 29 × 9.8

2T sin 12° = 29 × 9.8

T = ( 29 × 9.8 )/2 sin 12°

T = 141.1 / sin 12°

T = 141.1 / 0.2

T = 705.5 Newton

Stress = K × Strain

where K is the elastic modulus of the metal

elastic modulus is given as 7.0 × 10¹⁰ N/m²

T/A = 7.0 × 10¹⁰ × (Δl/l)

A = T × (l/Δl) × (1/ (7.0 × 10¹⁰) )

A = π r² = T / ( (7.0 × 10¹⁰) × ( (1/cos 12°) - 1) )

π r² = 705.5 / ( (7.0 × 10¹⁰) × 0.02234 )

r = √( 705.5 / ( π × (7.0 × 10¹⁰) × 0.02234 ) ) metre

r = √( 705.5 / ( 4910.33 × 10⁶ ) ) metre

r = √( 0.1436 × 10⁻⁶ ) metre

r = ( 0.378 × 10⁻³ ) metre

r = 0.378 millimetre

Thus we have find the radius of the wire by applying stress strain relation which came out to be 0.378 millimetre.

Learn more about Young's Modulus here:

brainly.com/question/13257353

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2 years ago

Which of the following statements are TRUE about nuclear energy?

san4es73 [151]

Answer:

Explanation:

4 0

3 years ago

Why should a rain gauge be raised 30cm above the ground​

Why should a rain gauge be raised 30cm above the ground