Who was the 1st to use film in intraoral radiography?

Answers

Answer 1

Answer:

The first dental x-ray film was used by Dr. Frank Vanwoert.

Related Questions

Two skaters stand facing each other. One skater's mass is 60 kg, and the other'smass is 75 kg. The two skaters push off each other. After the push, the smallerskater has a velocity of 3.0 m/s. If no other forces are acting on the skaters, whatis the velocity of the larger skater?
with what minimum speed must you toss a 160 g ball straight up to just touch the 13-m-high roof of the gymnasium if you release the ball 1.4 m above the ground? solve this problem using energy.
Suppose you hit a 0.058-kg tennis ball so that the ball then moves with an acceleration of 10 m/s2. if you were to hit a basketball of mass 0.58 kg with the same force, what would the acceleration a of the basketball be? *graph is 4/x if that helps.
What is the effect on Earth's atmosphere of a strong solar flare?
A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 × 10³ kilograms. What is the amount of mechanical work done by the vehicle?

At a temperature of 280k, the gas in a cylinder has a volume of 20.0 liters.If the volume of the gas is decreased to 10.0 liters, what must the temperature be for the gas to remain at a constant pressure?

Answers

Answer:

T = 140 K

Explanation:

As we know by ideal gas law

$PV = nRT$

now if pressure of the gas is constant

then we will have

$V = (nR)/(P) T$

now we have

$V_1 = 20.0 litre$

$T_1 = 280 K$

$V_2 = 10.0 litre$

now from above equation

$(20.0)/(10.0) = (280)/(T)$

$T = 140 K$

Temperature should be 140k to maintain constant pressure

What is the frequency of a sound wave commonly called?

Answers

Frequency of a sound wave is commonly referred to as pitch. That is the specialized name for frequency of a sound wave.

Just remember it as pitch.

A submarine is 46 m below sea level, and it descends 24 m. How far below sea level is it? a. The submarine is 70 m below sea level. b. The submarine is 46 m below sea level. c. The submarine is 24 m below sea level. d. The submarine is 94 m below sea level.

Answers

Answer:70 m below

Explanation:

46 +24= 70

Which one of the following is true a. momentum results in a change of force
B. a force results in a change of momentum

Answers

Answer:

Explanation:

You need a specific force to change the momentum of something.

Hope this helps!

A car moves at 12 m/s for 30.0 seconds. It then accelerates at 1.5 m/s2 for 8.00 seconds. Finally, it continues on at this top speed for another 12.0 seconds. Calculate the net
displacement during the whole time interval.

Answers

Over the first 30.0 s, the undergoes a displacement of

(12 m/s) * (30.0 s) = 360 m

Over the next 8.00 s, the car accelerates from 12 m/s to a top speed of

12 m/s + (1.5 m/s²) * (8.00 s) = 24 m/s

and over this time interval, it is displaced an additional

(12 m/s) * (8.00 s) + 1/2 (1.5 m/s²) * (8.00 s)² = 144 m

For the last 12.0 s, the car moves at a constant speed of 24 m/s to cover a distance of

(24 m/s) * (12.0 s) = 288 m

So the car's net displacement is 360 m + 144 m + 288 m = 792 m. (The net displacement is the same as distance in this case because the car moves in only one direction.)

What is the term used to describe the energy needed to get a reaction started

Answers

Activation Energy is the amount of energy needed to get a reaction started.

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