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3 years ago

5

A wave created by a certain source travels from medium 1 into another medium 2. It is noticed that its velocity is faster in med

ium 2 than in medium 1

1 answer:

Finger [1]3 years ago

4 0

Do you have a chart or something that goes with it?

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Where do people and animals get energy to move arond

LuckyWell [14K]

<span>People and animals get energy to move arond in the food they eat.

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4 years ago

What is the mass of mars

tiny-mole [99]

the mass of mars is

6.39 × 10^23 kg

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2 years ago

A horizontal pipe carrying water tapers from 200mm diameter

Tomtit [17]

Answer:

Delta pressure = 45938[Pa]

Explanation:

This is a classic bernoulli equation problem, but first we must find the velocity at both ends of the pipe, knowing the diameters of each end.

$Q=V*\frac{\pi*d^{2} }{4} \\where:\\V = velocity[m/s]\\d = diameter [m]\\Q = volumetric flow[m^{3}/s]$

$Q=55[\frac{Lt}{s}] * \frac{1m^3}{1000Lt}\\Q=0.055[\frac{m^3}{s}]$

Now we can calculate the two velocites VA and VB

Using the bernoulli equation we have:

$P_{A}+ro*V_{A}^{2} +h_{A}*g*ro = P_{B}+ro*V_{B}^{2} +h_{B}*g*ro \\as we have the same elevation\\h_{A}*g*ro = h_{B}*g*ro\\Therefore\\P_{A}+ro*V_{A}^{2} = P_{B}+ro*V_{B}^{2}\\P_{B}- P_{A}= ro*V_{A}^{2} - ro*V_{B}^{2}\\\\P_{B}- P_{A}=ro*(V_{A}^{2} - V_{B}^{2})$

Where ro = density of water = 1000[kg/m^3]

$P_{B}-P_{A}= 1000*(7^2-1.75^2)\\P_{B}-P_{A}= 45937.5[Pa]$

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3 years ago

1. Identify this mystery element: I am very reactive, I desperately want to get rid of my electron. When I make a compound with

galina1969 [7]

1.) NaCl (Sodium Chlorine)
2.) Ne (Neon) lights.

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3 years ago

Read 2 more answers

A bouquet is thrown upward.

GrogVix [38]

Answer:

Explanation:

When a bouquet is thrown upward then the value of displacement or distance will not change with co-ordinate system.

For example if a particle start from $x=1\ m$ to move $x=7\ m$ in certain time with (0,0) as origin then the displacement is given by

Displacement $=7-1=6\ m$

If co-ordinate changes to $(1,0)$

then displacement is $x'=1-1=0\ m\ to\ x'=7-1=6\ m$

displacement $=6\ m$

Value of velocity will remain the same irrespective of the origin of the coordinate system

For example, if an object is thrown upward then its velocity up and vice-versa.

The value of acceleration will be the same i.e. acceleration due to gravity will be acting downward.

3 0

3 years ago