All categories

3 years ago

What elements are in NaOH

2 answers:

3 0

Answer: Sodim hydroxide have a formula of NaOH . So the elements present in the compound is sodium,oxygen and hydrogen.

Explanation:

jenyasd209 [6]3 years ago

3 0

Answer: Sodium hydroxide has a formula of NaOH . So the elements present in the compound are sodium,oxygen and hydrogen.

Explanation: I hope this helps!

You might be interested in

The Voyager 1 spacecraft, shown below, completed its space exploration mission in 1980 and has since been traveling away from Ea

aleksklad [387]

I think b hope this helps

4 0

3 years ago

Read 2 more answers

Rays that pass through a lens very close to the principle axis are more sharply focused than those that are very far from the ax

Svetach [21]

Answer: it is easier to read in bright light than dim light.

Explanation:

The ray of light is the direction that is used by light in travelling through a medium. Rays that pass through a lens very close to the principle axis are more sharply focused than those that are very far from the axis.

Because of the fact that the rays are close to the principle axis, the spherical aberration helps us to understand the reason why it is easier for people to read in bright light than readin iin dim light.

3 0

3 years ago

A uniform disk of mass 3.25 kg has a radius of 0.100 m and spins with a frequency of 0.550 rev/s. What is its angular momentum?

shutvik [7]

ANSWER:

0.0562 J

STEP-BY-STEP EXPLANATION:

Angular momentum is expressed in terms of moment of inertia and angular velocity. This is expressed as follows:

$L=I\cdot\omega$

Here, I is the angular momentum and ω is the angular velocity.

Angular momentum is mass time the square of the radius of the object. Moment of inertia for a uniform disk is given as,

$I=\frac{1}{2}m\cdot r^2$

Here, m is the mass of the disk and r is the radius of the disk.

Replacing:

$L=\frac{1}{2}m\cdot r^2\cdot\omega$

Convert the units of angular velocity into rad/s.

$\begin{gathered} \omega=0.55\text{ rev/s}\cdot\frac{2\pi\text{ rad}}{1\text{ rev}} \\ \omega=3.46\text{ rad/s} \end{gathered}$

We replace each data to calculate the angular momentum:

$\begin{gathered} L=\frac{1}{2}\cdot3.25\cdot0.1^2\cdot3.46 \\ L=0.0562 \end{gathered}$

The angular momentum of the uniform disk is 0.0562 J

7 0

1 year ago

In order to generate electricity from mechanical energy, one essential element needed to transform the energy into electrical en

Anettt [7]

Id say your answer is gonna be d

6 0

3 years ago

Read 2 more answers

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. Neglect nonconservative

Semmy [17]

Answer:

1.5 m

Explanation:

Using the law of conservation of energy

Gain in potential energy by the skateboarder= Loss in kinetic energy by the skateboarder

PE=KE where KE represent potential energy, PE represent potential energy

$KE=0.5mv^{2}$ where m is mass of skateboarder and v is velocity of skateboarder

PE=mgh where m is the mass of skateboarder, g is acceleration due to gravity which in this case is taken as $9.81 m/s^{2}$ and h is the highest point reached by the skateboarder. Equating PE=KE we have

$mgh=0.5mv^{2}$ and since m are on both LHS and LHS, the cancel

$gh=0.5v^{2$ } and making h the subject of the above formula

$h=\frac {0.5v^{2}}{g}$

Substituting v with 5.4 m/s and g as $9.81 m/s^{2}$ we obtain

$h=\frac {0.5*(5.4 m/s)^{2}}{9.81}=1.486238532 m$

Rounded off, h=1.5 m

8 0

3 years ago