Ask question

Ask question

All categories

2 years ago

12

A _____ provides rapid calculus removal by converting very-high-frequency sound waves into mechanical energy and reduces operato

r hand fatigue.

1 answer:

sveticcg [70]2 years ago

8 0

Answer:

The Ultrasonic Scaler

Explanation:

You might be interested in

Ask Your Teacher In the air over a particular region at an altitude of 500 m above the ground, the electric field is 120 N/C dir

strojnjashka [21]

Answer:

$1.475\times 10^{-13}\ C/m^3$

Explanation:

$\epsilon_0$ = Permittivity of free space = $8.85\times 10^{-12}\ F/m$

A = Area

h = Altitude = 600 m

Electric flux through the top would be

$-110A$ (negative as the electric field is going into the volume)

At the bottom

$120A$

Total flux through the volume

$\phi=120-110\\\Rightarrow \phi=10A$

Electric flux is given by

$\phi=\dfrac{q}{\epsilon_0}\\\Rightarrow q=\phi\epsilon_0\\\Rightarrow q=10A\epsilon_0$

Charge per volume is given by

$\rho=\dfrac{q}{v}\\\Rightarrow \rho=\dfrac{10A\epsilon_0}{Ah}\\\Rightarrow \rho=dfrac{10\epsilon_0}{h}\\\Rightarrow \rho=\dfrac{10\times 8.85\times 10^{-12}}{600}\\\Rightarrow \rho=1.475\times 10^{-13}\ C/m^3$

The volume charge density is $1.475\times 10^{-13}\ C/m^3$

7 0

3 years ago

Which events may occur when ocean salinity increases? Check all that apply.

Pavlova-9 [17]

The answer is number two, number four, and number one

3 0

2 years ago

Read 2 more answers

ball is dropped from rest and hits the ground 1.1 seconds later. What height was the ball released from?

Aleonysh [2.5K]

Height = 1/2 * 9.8 * (1.1^2)

5 0

3 years ago

in the circuit diagram, what does the symbol made of two long lines and two short likes with a positive and a negative sign at e

IrinaVladis [17]

It is a battery (the long and short lines represent 2 cells)

7 0

3 years ago

There is a reflection at the boundary between two materials if there is a change of __________ at the boundary.

melisa1 [442]

<span>The speed of the light in the materials. Hope this helps!!</span>

8 0

3 years ago