2 years ago

One of the signs a chemical reaction is taking place

Physics

1 answer:

ladessa [460]2 years ago

6 0

Answer: One of the signs a chemical reaction is taking place is the presence of bubbles. :)

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A rod 14.0 cm long is uniformly charged and has a total charge of 222.0 mc. determine (a) the magnitude and (b) the direction of

Yuri [45]

Electric field due to a charged rod along its axis is given by

$E = \frac{kQ}{(L+r)(r)}$

here we know that

L = 14 cm

r = distance from end of rod

r = 36 - 7 = 29 cm

Q = 222 mC

now we will have

$E = \frac{(9 \times 10^9)(222 \times 10^{-3})}{(0.29)(0.43)}$

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3 years ago

When a ball is launched from the ground at a 45° angle to the horizontal, it falls back to the ground 50 m from the launch point

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Answer:

Explanation:

Given

angle through which ball is launched $=45^{\circ}$

Range of ball=50 m

Range of projectile is $=\frac{u^2sin2\theta }{g}$

$50=\frac{u^2sin90}{9.8}$

u=22.136 m/s

If ball is thrown straight upward

$v^2-u^2=2as$

$0-(22.136)^2=2(-9.8)s$

$s=\frac{22.136^2}{2\times 9.8}$

s=25 m

(b)For Projectile time of flight is

$t=\frac{2usin\theta }{g}$

$t=\frac{2\times 22.136\times sin45}{9.8}$

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2 years ago

Which of these forces pull or push upward, and which pull or push downward? Explain.

PtichkaEL [24]

Answer:

A force is a push or pull that acts upon an object as a result of that objects interactions

Explanation:

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3 years ago

The electrons that are gained or lost in an ionic bond are called...?

Gala2k [10]

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Explanation:

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melamori03 [73]

Answer:

Explanation:

gravity is a pulling force according to Newton

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2 years ago