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2 years ago

8

19) Suppose a ball is thrown straight up and experiences no appreciable air resistance. What is its acceleration just before it

reaches its highest point? A) zero B) slightly less than g C) exactly g D) slightly greater than g

1 answer:

Anton [14]2 years ago

7 0

Answer:

C)

Explanation: In freefall motion object always has gravity as its acceleration.

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A person experiencing heat

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Answer:

it will be heavy sweating

Explanation:

because if humans expierment a heavy heat they might be sweating heavly

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3 years ago

Answer the following questions.

Marta_Voda [28]

It's the number of protons that are in an element

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3 years ago

In a series circuit,

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A) Electrons in a series circuit travel in one path, and if the path or wire is broken, the current has no other path to travel, and the circuit does not work. Hope this helps!

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3 years ago

The electric potential in a region of uniform electric field is -1600 V at x = -1.30 m and + 2000 V at x =+ 1.80 m . What is Ex?

Inga [223]

Answer:

-1161.29 V/m

Explanation:

The x component of electric field will be given by

$E_x= -\frac {\triangle V}{\triangle x}$

Here $\triangle V$ is the change in voltage while triangle x is the change in x

$E_x= -\frac {+2000 V--1600V}{\triangle 1.8--1.3}=-\frac {3600}{3.1}=-1161.29 V/m$

6 0

3 years ago

A beam of light passes through a polarizer and then an analyzer. In this process, the intensity of the light transmitted is redu

anygoal [31]

Answer:

71.56°

Explanation:

I₀ = Intensity of unpolarized light

θ = Angle between the axis of the filter and polarization direction

Intensity of polarzied light

$I=I_0cos\theta$

Here, the light that is transmitted is reduced by 10% that means

I=0.1I₀

So,

$0.1I_0=I_0cos^2\theta\\\Rightarrow cos^2\theta =0.1\\\Rightarrow cos\theta =0.316\\\Rightarrow \theta= cos^{-1}0.316\\\Rightarrow \theta=71.56^{\circ}$

∴ The angle between the axes of the polarizer and the analyzer is 71.56°

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3 years ago