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Oduvanchick [21]
3 years ago
13

While John is traveling along a straight interstate

Physics
1 answer:
lora16 [44]3 years ago
7 0

Answi dont know

Explanation:

i dont know

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A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.3 m/s directly upward.
elena-s [515]

Answer:

h=15.27m

Explanation:

Since at maximum height the vertical velocity must be null it's better to use the formula:

v_f^2=v_i^2+2ad

We will use this formula for the vertical direction, choosing the upward direction as the positive one, so we have:

0=v_i^2+2ah

or

h=-\frac{v_i^2}{2a}

which for our values is:

h=-\frac{(17.3m/s)^2}{2(-9.8m/s^2)}=15.27m

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3 years ago
How many moles of MgCl2 are there in 329 g of the compound?<br><br> Your Answer:
Nookie1986 [14]

Answer:3.46

Explanation:

mass=329

molar mass=71

no. of moles=329/71

=3.46

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Which factors could be potential sources of error in the experiment? check all that apply.
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(A)energy lost in the lever due to friction

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(E)position of the fulcrum for the lever affecting transfer of energy

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A referee will toss up the ball between to opponents.what is this called
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This happens in basketball. It is known as "jump ball".
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When electrons in an atom in an excited state fall to lower energy levels, energy is?
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Radiated away as electromagnetic radiation.
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