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AVprozaik [17]
2 years ago
10

Sarah and Maisie are analysing data from their school sports day. Looking at the 1500 m results for Stephen, Maisie believes tha

t Stephen’s displacement from the start line is 1500 m. Sarah says that she is incorrect and that his displacement from the start is actually 0 m. Which of the students is correct? Give reasoning for your answer.
Physics
1 answer:
Dahasolnce [82]2 years ago
4 0

Answer:

Sarah is right

Explanation:

This is an exercise that differentiates between scalars and vectors.

A scalar is a number, instead a vector is a number that represents the module in addition to direction and sense.

In this case, the distance (scalar) traveled is a number, which is why it is worth 1500m, but the displacement is a vector and since the point where it leaves is the same point where the vector's modulus arrives is zero, so the DISPLACEMENT VECTOR is zero

consequently Sarah is right

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2) What must be connected for an electrical current to flow in a simple current?

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Load will provide the resistance to the circuit and help to build the voltage across it

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<em>d.Magnets and conducting wires move near each other </em>

here when magnets move near wires then it will induce the electric current and behaves like generators

7) What do all generators have in common

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8) How can we measure electrical current

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this voltage and number of electrons will help to calculate current

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2 years ago
What does gravity do to objects as they:<br><br> a) are thrown up:<br><br> b) fall toward earth:
tangare [24]

Answer:

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7 0
2 years ago
In general, court in the United States have repeatedly struck down efforts to include creationism or intelligent design in publi
OverLord2011 [107]
Because they are not supported by the results of any legitimate investigation
that's conducted in accordance with the Scientific Method. 

You may say: 
"Well then, teach both lines of reasoning,
and let each student decide for himself." 

This is suggested by the same people who aren't ready to let their
fourth-grader choose his own clothing, dinner menu, or school.
And it sounds reasonable to a vast mass of citizens who have decided
for them selves that the jury is still out on climate change.

What I'm saying is this:

-- The Scientific Method is a METHOD of investigation that's designed
and developed to remove the effects of human prejudice from the
collection and evaluation of evidence, and to be able to tell bogus
conclusions apart from true ones.  It's the most reliable way we have
of asking and answering questions about the natural world.

-- Some questions CAN'T be studied with the Scientific Method,
because experiments generally can't be constructed.  These include
matters of religion and faith.  Nobody can flatly state that those are
right or wrong.  We have no reliable way to say, either way. 
The only way to decide is . . . faith.   

-- It is illegitimate to take the answer to a question of faith that can't be
derived scientifically, and a scientifically derived conclusion, set them
down next to each other on the same table, and pretend that they can be
compared.

-- When you put them next to each other, say that they're equivalent,
and tell people "go ahead and choose one or the other", the situation
is bogus, the comparison is dishonest, and people who are untrained
or uneducated or immature are not qualified to "choose".

That's why.

This is my opinion.  I could be wrong.

Personally, I happen to be a believer.  But I cannot prove anything I believe
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elements of the scientific method.  They're not applicable, and they don't work,
in matters of faith.
8 0
3 years ago
A forest is an ecosystem. There are many plants and animals in the forest. What is true about the plants and animals? The plants
Volgvan

Answer:

The plants depend on animals and animals depend on plants.

Plants depend on animals for nutrients, pollination and seed dispersal. Animals are totally dependent on plants. First of all plants produce oxygen which is vital for life on earth. Then, for many animals plants are their basic food, or if plants don’t make up 100 % of their diet, plants are nevertheless essential in their food supply.

7 0
2 years ago
Read 2 more answers
A 220g mass is on a frictionless horizontal surface at the end of a spring that has a force constant of 7.0N/m The mass is displ
sladkih [1.3K]

Answer:

Explanation:

Your numbers seem wonky, so I'll just assume that the initial displacement is a distance A (Amplitude) from the equilibrium position. Spring constant = k

Initial potential energy is

PE = ½kA²

As potential energy and kinetic energy are constantly exchanging in SHM,

the position x where half of the original spring potential exists is found where

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    x² = ½A²

    x = (√0.5)A

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just plug in your actual starting position A

With A = 5.2 cm

x = 3.67695... 3.7 cm

5 0
2 years ago
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