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Lynna [10]
3 years ago
11

Are these compounds ionic or covalent? CH4 Fe2O3 KNO3 C4 H2O ВеCl2

Physics
1 answer:
3241004551 [841]3 years ago
8 0

Answer: please mark me brainliest

they are covalent compounds.

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Relative motion can best be defined as
creativ13 [48]

Relative motion is the motion of an object relative to another object,
or as it would appear to an observer stuck to the other object and
riding on it.

6 0
3 years ago
what is the wavelength of waves at the beach if they have a frequency of 0.3 Hz and they move at 7.1 m/s?
Reil [10]

Answer:

23.67 m

Explanation:

We are given;

Frequency; f = 0.3 Hz

Speed; v = 7.1 m/s

Now, formula to get the wavelength is from the wave equation which is;

v = fλ

Where λ is wavelength

Making λ the subject, we have;

λ = v/f

λ = 7.1/0.3

λ = 23.67 m

5 0
3 years ago
A 0.3-m-radius automobile tire rotates how many revolutions after starting from rest and accelerating at a constant 2.13 rad/s2
Aloiza [94]

Answer:

The automobile tire rotates 91 revolutions

Explanation:

Given;

angular acceleration of the automobile, α = 2.13 rad/s²

time interval, t = 23.2-s

To calculate the number of revolutions, we apply the first kinematic equation;

\theta = \omega_i  \ + \frac{1}{2} \alpha t^2

the initial angular velocity is zero,

\theta =0\ + \frac{1}{2} (2.13) (23.2)^2\\\\\theta = 573.2256 \ Rad

Find how many revolutions that are in 573.2256 Rad

N = \frac{\theta}{2 \pi} = \frac{573.2256}{2\pi} \\\\N = 91 \ revolutions

Therefore, the automobile tire rotates 91 revolutions

3 0
4 years ago
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5 0
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A microwave oven operates at 2.50 GHzGHz . What is the wavelength of the radiation produced by this appliance? Express the wavel
sattari [20]

Answer:

The wavelength is \lambda  =  1.2  * 10^8 nm

Explanation:

From the question we are told that

   The frequency of operation of the microwave is  f =  2.50 GHz  =  2.50 *10^{9} \ Hz

     Generally the wavelength is mathematically represented as

          \lambda  =  \frac{c}{f}

Here c is the speed of light with value c =  3.0 *10^{8} \  m/s

So  

         \lambda  =  \frac{3.0 *10^{8}}{  2.50 *10^{9}}

=>       \lambda  =  0.12 \  m

converting to nanometer

           \lambda  =  1.2  * 10^8 nm

6 0
4 years ago
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