P2 problem solving

The intensity is 40 units at 2 m. What will the intensity be at 1 m?

80 Units

A string instrument generates vibrations at a frequency of 3.0 Hz. How many minutes will it take for 540 wave crests to pass a point of observation to occur?

3.0 Minutes

General relativity is mainly associated with:

Gravity and the curvature of spacetime

What is the frequency of radiation with a wavelength of 100 nm?

3.0 x 10^16 Hz

Increasing the atomic number of the anode target will result in which of the following to the X-ray spectrum?

Increase Quantity, Increase Quality

Characteristic radiation is produced when:

An outer-shell electron fills an inner-shell vacancy

Calculate the energy equivalent of 1.0 kg of mass using E = mc^2.

9.0 x 10^16 J

This region of electromagnetic energy has relatively low energy and relatively very long wavelength.

Radiowaves

Bremsstrahlung radiation is produced primarily when a projectile electron:

Is slowed or deflected near a target nucleus

Which statement about photons is correct?

They travel at the speed of light in a vacuum

An exposure taken at 100 kVp would have a discrete emission spectrum with a maximum energy of approximately ____ keV.

69

A medical diagnostic X-ray machine produces photons with a frequency of 1.20 x 10^19 Hz. What is the energy of a single photon in keV?

49.6

Which of the following is NOT an equivalent of the Speed of Light?

186,000 km/s

What is the energy equivalent of 0.001 kg of mass?

9.0 x 10^13 J

Which is a consequence of special relativity?

Time dilation

An ultrasound transducer used in medical imaging emits sound waves with a frequency of 2.5 MHz. If the speed of sound in human soft tissue is approximately 1,540 m/s, what is the wavelength of these ultrasound waves in millimeters?

0.616 mm

It is a type of ionizing radiation that is emitted from the electron cloud.

X-rays

A mass of 2 kg is completely converted into energy. What is the energy produced?

1.8 x 10^17 J

This phenomenon is when photons interact with matter most easily when matter is approximately the same size as the photon wavelength

Wave-Particle duality

A wave machine produces water waves at a constant frequency of 0.50 Hz. How many wave crests pass a marker in 1.5 minutes?

45 Crests

A photon has a wavelength of 1.0 x 10^-9 m. Calculate its frequency.

3.0 x 10^17 Hz

The intensity of light from a desk lamp is 360 millilumens at a distance of 2 meters. What is the intensity of this light at 6 meters

40 mlm

Which factor primarily controls X-ray photon energy/quality

Tube voltage

A photon has a frequency of 5.0 x 10^14 Hz. What is its approximate wavelength?

600 nm

A diagnostic X-ray photon is generated with an energy of 62,000 eV. What is its wavelength in meters

2.0 x 10^-11 m

A photon has a frequency of 5.0 x 10^14 Hz. What is its energy?

3.32 x 10^-19 J

A photon has a wavelength of 600 nm. What is its frequency?

5.0 x 10^14 Hz

If an observer uses a stopwatch and counts 120 wave crests passing a pier in 2.0 minutes, what is the frequency of the waves in Hertz?

1.0 Hz

Which factor primarily controls X-ray quantity?

Tube current

Most of the kinetic energy of projectile electrons becomes:

Heat

Time dilation means:

Time can pass at different rates for observers in relative motion

What is the main purpose of a rotating anode?

Spread heat over a larger area

A photon has a frequency of 3.0 x 10^17 Hz. What is its wavelength?

1 nm

Increasing the atomic number of the target generally increases:

X-ray production efficiency

Which statement is most accurate regarding E = mc^2?

It establishes the equivalence between mass and energy

An X-ray source produces an intensity of 90 units at 1 m. What is the intensity at 3 m?

10 units

Which type of X-ray radiation produces a continuous spectrum?

Bremsstrahlung radiation

Length contraction occurs when an object:

Moves at speeds approaching the speed of light

Calculate the frequency of radiation with a wavelength of 300 nm.

1.0 x 10^15 Hz

A mobile radiographic unit is being utilized in a trauma ward. The technical factors set by the radiologic technologist produce an exposure of 0.50 mGy at a distance of 100 cm. For radiation safety compliance, the restricted area where the exposure intensity is greater than 0.02 mGy must be cordoned off. How far from the X-ray tube will this restricted area extend?

500 cm

It refers to the range of types or values of any quantity such as X-rays.

X-ray emission spectrum

Which type of relativity deals primarily with objects moving at constant velocity and high speeds?

Special relativity

At least how much energy is required to ionize an L-shell electron of a Tungsten Atom?

69.5 keV

This type of electromagnetic energy interacts with metal rods or wires called antennas.

Radiowaves

Accounting for Planck's Constant, what is the frequency of a 150 keV X-ray?

3.63 x 10^19 Hz

If the distance from a radiation source is doubled, the intensity becomes:

One-fourth as much

Which relationship between wavelength and frequency is correct?

Inversely proportional

A mass of 0.01 kg is converted completely into energy. What is the energy equivalent?

9.0 x 10^14 J

What is the function of the stator?

Creates a rotating magnetic field that causes the anode to rotate

These are variations of electric and magnetic fields as the photon travels with velocity

Sine waves

What is the energy equivalent of 5 g of mass?

4.5 x 10^14 J

Most of the kinetic energy of the projectile electrons is converted into:

Heat

If the intensity of an X-ray beam is 80 mR/min at 1 meter, what is the intensity at 2 meters?

20 mR/min

An X-ray photon has a wavelength of 0.075 nm. What is its frequency?

4.00 x 10^18 Hz

The maximum energy of a Characteristic X-ray spectrum occurs when:

An electron from the L-shell fills a vacancy in the K-shell

A photon has an energy of 3.315 x 10^-15 J. What is its wavelength?

0.060 nm

The exposure from an X-ray tube operated at 85 kVp, 100 mAs is 8 mGy at 100 centimeters. What will the exposure be if the distance is changed to 2 meters?

2 mGy

An L-shell electron is removed from a tungsten atom and is replaced by an M-shell electron. What is the energy of the characteristic x-ray that is transmitted

9 keV

The exposure from an x-ray tube operated at 80 kVp, 150 mAs is 5 mGy at 120 cm. At what distance will the exposure be 1.25 mGy?

240 cm

A student timing ripples in a water tray notes that the 1st crest passes a marker at t = 0 s and the 16th crest passes at 5.0 seconds. What is the frequency of the ripples?

3.20 Hz

At 100 kVp, the maximum possible photon energy of the continuous spectrum is:

100 keV

A photon has a frequency of 1.0 x 10^16 Hz. Calculate its wavelength.

30 nm

The exposure is 12 mGya at 100 cm. What will the exposure be at 200 cm?

3 mGya

A photon has a frequency of 2.0 x 10^15 Hz. What is its energy?

1.33 x 10^-18 J

Within the EM spectrum, which increases as frequency increases?

Energy

A photon has a frequency of 1.0 x 10^18 Hz. Calculate its energy.

6.63 x 10^-16 J

Calculate the energy of a photon with a frequency of 3.0 x 10^16 Hz.

1.99 x 10^-17 J

An exposure taken at 100 kVp would have a continuous emission spectrum with a maximum energy of _____ keV.

100

According to special relativity, the speed of light in a vacuum is:

Constant for all inertial observers

It is the process of adding together the total number of X-rays emitted at each spectrum to get the total number of X-rays emitted from an X-ray tube

Integration