Which of the following describes the effect of beam filtration on the x-ray spectrum? It increases the number of low-energy photons It decreases the average energy of the beam It increases the average energy of the beam It increases patient dose
33. What are the two ways that light quality can be characterized? direct or indirect light bright and dim light hard and soft light round and curved light
Hydroplaning is when __ you utilize water driving techniques in the rain to drift your wheels lose traction on the road and your car skids you engage your brakes over the water and drift your car glides over shallow water
The rays from the Sun that tan our skin are called __ infrared rays visible light ultraviolet rays gamma rays
As an electromagnetic wave travels through vacuum, it __ reduces in speed releases photons propagates as a transverse wave loses energy
Why are some EMR types invisible to human eyes? They travel faster Their wavelengths are too long or short They reflect light They absorb sunlight
What is the change in atomic number when an atom undergoes beta emission? Increases by 1 Decreases by 1 Increases by 2 Decreases by 2
What is the rest position of particles in a wave called? Crest Trough Equilibrium position Peak
Only __ nuclei disintegrate on their own, giving out radiation. stable unstable irregular spherical
Which of the following is a mechanical wave? Light wave Sound wave Radio wave Gamma wave
Convert 810 mmHg to kPa. 6.16E5 kPa 760 kPa 1.14 kPa 107.9 kPa
Which one is Newton's second law of motion? The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. The acceleration of an object as produced by a net force is inversely proportional to the magnitude of the net force, in the same direction as the net force, and directly proportional to the mass of the object. $F=\frac {m}{a}(\frac {m}{s^{2}})$ $F=\frac {a}{m}(N)$
What is the best estimale of the mass of a cupcoke? A 80 pounds 80 grams C 80 tons kiloaroms
Describe how voltage, current and resistance behave in a parallel circuit. Edit View Insert Format Tools Table $\square $
A lead ball has a mass of 55 .0 grams and a density of $11.4g/cm^{3}$ What is the volume of the ball? 4.82 mL 0.207 L 4.82 L 0.207 mL none of the above
Question 3. Three unmarked bar magnets are tested in pairs at their ends. The following observations are made: - Magnet A and Magnet B attract each other. - Magnet A and Magnet C repel each other. - Magnet B and Magnet C repel each other. Which of the following statements can be determined from these results alone? A. Magnets A and B have like poles near each other. B. Magnets A and C have like poles near each other. C. Magnets B and C have unlike poles near each other. D. All three magnets have the same pole at one end.
black holes? Gravity Normal Friction Applied What do we call the center of a black hole? Accretion Disc Event Horizon Singularity Black Point What force of physics causes nebulas to turn into stars, and later stars into 1 point 1 point
How was viscosity measured in the "Viscosity" lab? directly with a spring scale directly with a viscosity meter indirectly by measuring the distance a liquid flowed in a given time indirectly by measuring the volume of honey
You're driving down a highway late one night at $20m/s$ when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the breaks is 0.50 s, and the maximum deceleration of your car is $10m/s^{2}$ How much distance is between you and the deer when you come to a stop? 10 m Om 5.0 m 35 m 30 m
Match the items. a. Disturbance moves perpendicular to the direction of the wave b. Ocean Wave c. Sound d. Light e. Disturbance moves in the same direction as the wave 1. Surface Wave 2. Mechanical Wave 3. Electromagnetic Wave 4. Longitudinal Wave 5. Transverse Wave
