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4 years ago

HELLO PLEASE HELP ME ASAP!!! THIS IS ALREADY LATE AND I NEED IT DONE!! •will give brainlist•

Physics

1 answer:

uranmaximum [27]4 years ago

3 0

"energy above that needed to ionize the molecule is carried away as kinetic energy of the electron ejected"

A raised weight.

Water that is behind a dam.

Those are all some potential and kinetic

A car that is parked at the top of a hill.

Explanation:

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The pressure in a section of horizontal pipe with a diameter of 2.5 cm is 139 kPa. Water ï¬ows through the pipe at 2.9 L/s. If t

My name is Ann [436]

Answer:

d = 2*0.87 = 1.75 cm

Explanation:

by using flow rate equation to determine the speed in larger pipe

$\phi =\pi r^2 v$

$v = \frac{\phi}{\pi r^2}$

$= \frac{2900 cm^3/s}{3.14(1.25cm)^2}$

= 591.10 cm/s

= 5.91 m/s

by Bernoulli's EQUATION

$p1 +\frac{1}{2} \rho v1^2 = p2 +\frac{1}{2} \rho v2^2$

$139000+ \frac{1}{2}*1000*5.91^2 = 101000 +\frac{1}{2}*1000* v2^2$

solving for v2

v2 = 10.53 m/s

diameter can be determine by using flow rate equation

$q = v \pi r^2$

$r^2 = \frac{q}{\pi v}$

$= \frac{2900}{3.14*1053}$

r = 0.87 cm

d = 2*0.87 = 1.75 cm

5 0

3 years ago

Assume patmos=1.00atm. what is the gas pressure pgas? express your answer in pascals to three significant figures.

hodyreva [135]

<span>Answer: Well, let's start by finding the pressure due to the "extra" height of the mercury. p = 1.36e4 kg/mÂł Â· (0.105m - 0.05m) Â· 9.8m/sÂ˛ = 7330 N/mÂ˛ = 7330 Pa The pressure at B is clearly p_b = p_atmos = p_gas + 7330 Pa The pressure at A is p_a = p_gas = p_atmos - 7330 Pa c) 1 atm = 101 325 Pa Then p_gas = 101325 Pa - 7330 Pa = 93 995 Pa</span>

8 0

3 years ago

Read 2 more answers

A positive force on the balance indicates a downward force on the silver sphere while a negative force on the balance indicates

anastassius [24]

The two spheres have opposite charges.

<h3 /><h3 /><h3>What are types charge?</h3>

A charge can be negatively charged or positively charged.

When two charges have opposite signs, that is positive and negative signs, the two charges will attract each other.
When the two charges have the same sign, it causes repulsion.

When a positive charge points downwards ↓ and the negative charge points upwards ↑, this causes attraction and shows that the two charges are different.

Thus, we can conclude that the two spheres have opposite charges.

Learn more about attraction and repulsion of charges here: brainly.com/question/2396080

7 0

2 years ago

A physicist is calibrating a spectrometer that uses a diffraction grating to separate light in order of increasing wavelength (λ

cluponka [151]

Answer:

Explanation:

Given

$N=3680 cm^{-1}$