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Nastasia [14]
3 years ago
11

Which electromagnetic wave is used in dental scans?

Physics
2 answers:
julsineya [31]3 years ago
8 0

Answer:

X-rays are most often used to examine bones and teeth.

Hope this helps!

Darina [25.2K]3 years ago
7 0

Answer:

X-rays are most often used to examine bones and teeth. Magnetic resonance imaging uses radio waves and a magnetic field to create more detailed pictures of the inside of the body. This type of imaging is used to find tumors and other abnormalities in tissues that won't show up in X-rays.

Explanation:

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A 6.2 kg cannonball is fires from a 280 kg cannon. The cannon recoils with a velocity of 4.9 m/s. What is the velocity of the ca
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3 years ago
The electric field everywhere on the surface of a thin, spherical shell of radius 0.770 m is of magnitude 860 N/C and points rad
11111nata11111 [884]

Answer:

(a) Q = 7.28\times 10^{14}

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Explanation:

Gauss’ Law can be used to determine the system.

\int{\vec{E}} \, d\vec{a} = \frac{Q_{enc}}{\epsilon_0}\\E4\pi r^2 = \frac{Q_{enc}}{\epsilon_0}\\(860)4\pi(0.77)^2 = \frac{Q_{enc}}{8.8\times 10^{-12}}\\Q_enc = 7.28\times 10^{14}

This is the net charge inside the sphere which causes the Electric field at the surface of the shell. Since the E-field is constant over the shell, then this charge is at the center and negatively charged because the E-field is radially inward.

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