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3 years ago

Marking brainliest help pls the formula are there to help ^

Physics

1 answer:

natta225 [31]3 years ago

6 0

Answer:

Explanation:

Look at the equation for Potential Energy. PE = mass times gravity times the height. Filling in and solving for h:

34.3 = .5(9.8)h so

34.3 = 4.9h so

h = 7 meters

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ok this question is for y'all how do what is the coriolis effect and what do it produce and how and i know the answer

Fudgin [204]

Idk can u explain to me?

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4 years ago

Which two elements have similar properties and 8 electrons in their<br> outermost shells?

statuscvo [17]

Answer:

A. Neon and argon

General Formulas and Concepts:

Reading the Periodic Table of Elements
Valence Shell configurations

Explanation:

Elements that have a full valence shell (the outermost shell), are in Group 18 of the Periodic Table.

Because their outermost shell is full, they are inert, meaning that they do not like to bond or react with other elements.

Therefore, these gases with a stable full valence shell are known as Noble Gases.

Helium
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Radon

A. would be the correct answer.

5 0

3 years ago

Alan hits a hockey pick of mass 0.3 kg across a hockey rink with a velocity of 18 m/s to the east.

Talja [164]

PART a)

Momentum is defined as product of mass and velocity

so here initial momentum is

$P = mv$

given that

m = 0.3 kg

v = 18 m/s

$P = 0.3(18) = 5.4 kg m/s$

towards East

Part b)

Since puck was initially at rest so here initial momentum must be ZERO

so here to find the force we can use

$F = \frac{\Delta P}{\Delta t}$

so here we have

time interval = 0.25 s

now from above equation

$F = \frac{5.4 - 0}{0.25}$

$F = 21.6 N$

Part c)

Due to friction the puck lose its speed by 5 m/s

final speed = 18 - 5 = 13 m/s

mass = 0.3 kg

final momentum = (0.3)(13) = 3.9 kg m/s

now the impulse due to friction force is given as

$Impulse = P_f - P_i$

$impulse = 3.9 - 5.4 = -1.5 kg m/s$

Part d)

initial momentum of block will be ZERO as it is placed at rest

Initial momentum of the puck is given as

$P = mv = (0.3)(13) = 3.9 kg m/s$

so total momentum before collision is given as

$P = 3.9 + 0 = 3.9 kg m/s$

Part e)

since the system is isolated and there is no external force on it

So here momentum will remain conserved

so here we have

$P_i = P_f$

$3.9 = (m_1 + m_2) v$

$3.9 = (0.3 + 1.2)v$

$v = 2.6 m/s$

so final combined speed will be 2.6 m/s

8 0

3 years ago

Read 2 more answers

Hows does the world spin and we cant feel it

Debora [2.8K]

Because it spin so slow over the course of a whole day.

3 0

3 years ago

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How long in seconds will it take a car traveling at 100 miles/hour to travel the length of an American Football field?

Mrrafil [7]

Answer:

It will take 2.45 seconds.

Explanation:

A football field measured 120 yards, that is arround 0.068 miles, the car is moving with a constant speed so the formula we have to apply for this is:

$t=\frac{x}{v}\\where\\x=distance\\v=speed\\$

$t=\frac{0.068}{100}\\t=0.00068hrs$

in order to obtain the time in seconds:

$tsec=0.00068hr*(\frac{3600sec}{1hr} )\\tsec=2.45 sec$

6 0

3 years ago