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SciExam2
Science 105 IUP
| Question | Answer |
|---|---|
| Caruso is said to have made a crystal chandelier shatter with his voice. This is a demonstration of: | Resonance |
| Thrust a magnet into a coil of wire and the coil: | both of these |
| Your image in a plane mirror is: | virtual |
| Sound waves cannot travel in a: | vacuum |
| A step up transformer has a ratio of one to ten... | 100W |
| Electromagnetic waves from lowest to highest frequency: | Radio, Visible, X-ray, Gamma |
| If you double the frequency of a vibrating object, its period: | halves |
| The natural frequency of an object depends on its: | Shape, size, and elasticity. |
| A node is a position of: | minimum amplitude |
| Most of the waves in the electromagnetic spectrum are: | invisible |
| Like a longitudinal wave, a transverse wave has: | none of the above apply |
| The electric power of a land that carries 2 A at 120 V is: | 240 watts |
| Object and image for a plane mirror lie: | equal distances from the mirror |
| Magnetic domains normally occur in: | iron |
| A "burning glass" used to concentrate sunlight in a tiny spot is a: | converging lens |
| A 10-ohm resistor has a 5-A current in it. What is the voltage across the resistor? | More than 20 V |
| An object that completes 20 vibrations in 10 seconds has a frequency of: | 2 hertz |
| A mixture of yellow and cyan pigments appear: | Green |
| The speed of a sound wave in air depends on: | The air temperature |
| The approximate range of human hearing is: | 20 hertz to 20,000 hertz |
| Suppose a simple pendulum is suspended in an elevator. When the elevator is accelerating upward, the frequency of the pendulum: | Decreases |
| Two charges separated by one meter exert 1-N forces on each other. If the charges are pushed 1/4 meter separation, the force on each charge will be: | 16 N |
| Compared to a single lamp connected to a battery, two identical lamps connected in a series to the same battery will carry: | Less current |
| A 100 Watt lamp glows brighter than a 25 Watt lamp. The electric resistance of the 100 Watt lamp must be: | Less |
| A decibel is a measure of a sounds: | loudness |
| The average speed of light is greatest in: | Red glass |
| Color depends of what characteristic of light? | Its frequency |
| A certain transformer doubles input voltage. If the primary coil has 10 A of current, then the current in the secondary coil is: | 5 A |
| You wish to photograph the image of your little sister, whom is standing 2 meters from a plane mirror. Holding the camera beside her head, you should set the distance: | 4 meters |
| The Doppler Effect is characteristic of: | All of these |
| The main difference between a radio wave and a sound wave is their different: | Modes of travel |
| Modern automobile headlights are connected in: | Parallel |
| The fundamental frequency of a violin strong is 440 hertz. The frequency of its third harmonic is: | None of the above |
| Magenta light is really a mixture of: | Red and blue light |
| A main difference between gravitational and electric force is that electrical forces: | repel or attract |
| Which of the following is fundamentally different from the other? | Sound waves |
| An object that completes 100 vibrations in 5 seconds over a distance of 3 meters has a period of: | None of the above |
| An iron nail is more strongly attracted to the: | North or south pole- no difference really |
| A sheet of red paper will look black when illuminated with: | Cyan light |
| The incident light ray, the reflected light ray, and the normal between them: | lie in the same plane |
| A difference betweet electric forces and gravitational forces is that gravitational forces are not affected by: | Repulsive interaction |
| Magnetic field lines about a current carrying wire: | Circle the wire in closed loops |
| A floating leaf oscillates up and down two complete cycles each second as a water wave passes by. What is the waves frequency? | 2 Hertz |
| A sound source of high frequency emits a high: | None of these |
| Compared to its average speed in the air, the average speed of a beam of light in glass is: | Less |
| Which of the following can be projected onto a viewing screen? | A real image |
| Sound Travels faster in air if the air temperature is: | Warm |
| When two lamps are connected in parallel to a battery, the electrical resistance that the battery senses is: | Less than the resistance of either lamp |
| As a light ray enters or exits a water-air interface at an angle of 15 degrees with the normal, it: | Always bends towards the normal |
Created by:
j.hoffman12
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