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3 years ago

What is the chemical name of SiF4? sulfur fluoride silicon fluoride sulfur tetrafluoride silicon tetrafluoride

Physics

1 answer:

baherus [9]3 years ago

8 0

Answer:

Silicon tetrafluoride

Explanation:

The symbol Si represents the element silicon, as shown in the periodic table.

The are 4 fluorines, so the prefix for fluoride must have tetra-

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(a) A small object with mass 3.75 kg moves counterclockwise with constant speed 1.55 rad/s in a circle of radius 2.55 m centered

Eddi Din [679]

Answer:3.95 m/s

Explanation:

Given

mass of object $m=3.75 kg$

$\omega =1.55 rad/s$

radius of circle $=2.55 m$

initial Position $r=2.55 \hat{i}$

angular displacement $\theta _0=8.95 rad$

8.95 radian can be written as

$1.42 (2\pi )$

i.e. Particle is at first quadrant with $\theta =0.4242\pi \times \frac{180}{\pi }$

$\theta =76.36^{\circ}$

(c)velocity is $v=\omgea \times r$

$v=1.55\times 2.55=3.95 m/s$

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3 years ago

While doing a lab, a student found the density of a piece of pure aluminum to be 2.85 g/cm3. The accepted value for the density

bezimeni [28]

The equation for percent error is

% Error = $100*|Experimental-Theoretical|/Theoretical$

Our experimental is 2.85g/cm^3 and the accepted is 2.7g/cm^3

Thus our % Error = 5.555%

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3 years ago

Please help!

den301095 [7]

Hello there,

It takes 300 newtons of force and a distance of 20 meters for a moving cart to come to a stop. How much kinetic energy did this cart have?

Answer: 6000

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3 years ago

A sinusoidal wave of angular frequency 1,203 rad/s and amplitude 3.1 mm is sent along a cord with linear density 3.9 g/m and ten

kobusy [5.1K]

Answer:

18.7842493212 W

Explanation:

T = Tension = 1871 N

$\mu$ = Linear density = 3.9 g/m

y = Amplitude = 3.1 mm

$\omega$ = Angular frequency = 1203 rad/s

Average rate of energy transfer is given by

$P=\dfrac{1}{2}\sqrt{T\mu}\omega^2y^2\\\Rightarrow P=\dfrac{1}{2}\sqrt{1871\times 3.9\times 10^{-3}}\times 1203^2\times (3.1\times 10^{-3})^2\\\Rightarrow P=18.7842493212\ W$

The average rate at which energy is transported by the wave to the opposite end of the cord is 18.7842493212 W

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3 years ago

The study of charges in motion and their

vredina [299]

Answer:

The study of charges in motion and their interaction with magnetic fields is known as electromagnetism.

Any material with an unequal number of electrons and or protons could generally be termed as ion.

Explanation:

i hope this will help you :)

4 0

3 years ago