N/A - Exam Exam Answers

Based on the field lines, what is the best description of the charges?

After picking up several staples with the device, what change would enable Tony to drop the staples in the scrap metal bin?

Which statement belongs in the region marked X?

Which shows the motion of the rope at Point P as the wave passes through it?

What is the equivalent resistance of the circuit?

Which best completes the chart?

Which describes the image produced by the lens?

What is the bes t conclusion about the charges that can be made based on the diagram?

Which best describes how the image of the vase will appear?

By which factor is the sound intensity decreased at 3 meters?

A boat moves up and down on a lake as a wave passes by. If the boat oscillates 10 times in 2 seconds, what is the period of the wave?

Force cap f acts between two charges, q sub 1 and q sub 2 , separated by a distance d If q sub 1 is increased to twice its original value and the distance between the charges is also doubled, what is the new force acting between the charges in terms of cap f ?

What is the best description of a wave?

Aluminum has a frequency threshold of 9 point 8 4 6 times 10 to the 14th power Hz Which best explains what will happen when light with a frequency below the frequency threshold strikes aluminum?

Which electromagnetic wave transfers the least amount of energy?

How much time was required? A current of 1 point 8 cap A delivers 2 point 5 cap c of charge.

Which factors affect the strength of a magnetic field around a current-carrying wire? Choose two correct answers.

Which best describes an example of an n-type semiconductor?

Which best explains why infrared waves are ineffective for treating cancer?

The ratio of coils of wire in the primary winding to the secondary winding of a transformer is ratio of 3 to 2 How does the transformer change the voltage of a current applied to the primary winding?

Which fields would most likely make use of spectroscopy techniques? Choose four correct answers.

An 8 point 0 centimeters object is 40 point 0 centimeters from a concave mirror that has a focal length of 10 point 0 centimeters Its image is 16 point 0 centimeters in front of the mirror.

The speed of light in a vacuum is approximately 2.99 meters meters per second , and the speed of light through a piece of glass is approximately 1.97 meters meters per second What is the index of refraction for the piece of glass?

Which statement is part of Dalton's atomic theory?

Which changes in an electric motor will make the motor stronger? Choose three correct answers.

What is the main difference between a permanent magnet and a temporary magnet?

The distance between a charge and the source of an electric field changes from 3 millimeters to 6 millimeters

The electric field between two parallel plates has a magnitude of 180 cap n over cap c The two plates are 2 point 5 centimeters apart. Recall that the magnitude of the charge on an electron is 1 point 6 0 2 times 10 to the negative 19 power cap c How much work is done to move an electron from the positive plate to the negative plate?

The power rating of a clock is 10 cap w , and the cost of electrical energy is 0 point 1 5 dollars per kilowatt-hour. Rounded to the nearest cent, how much does it cost to run the clock for one whole week?

A lightbulb has a resistance of 195 cap omega and carries a current of 0 point 6 2 cap A

A spring has a spring constant of 48 cap n over m The end of the spring hangs 8 m above the ground. How much weight can be placed on the spring so that the end of the spring is 2 m above the ground?

Which describes Einstein’s second postulate about the special theory of relativity?

A bell is rung. What best describes the density of air around the bell?

Which lists the correct steps that occur when using a diffraction grating to bend light?

Which statements describe a fully charged capacitor? Choose three correct answers.

An ideal pendulum is often discussed when studying simple harmonic motion. What are the conditions needed for an ideal pendulum? Choose three correct answers.

A 6 centimeters object is 15 centimeters from a convex lens that has a focal length of 5 centimeters What is the distance of the image from the lens, to the nearest hundredth?

Which are characteristics of a ray when it hits a boundary and reflects, but not when it hits the boundary and refracts? Choose two correct answers.

Karen is running forward at a speed of 9 meters per second She tosses her sweaty headband backward at a speed of 20 meters per second

A car makes sound as it moves toward a stationary observer. What best describes the sound wave heard by the observer compared with the sound heard by the car’s driver?

Which list provides evidence for the general theory of relativity?

A charge of 8 point 4 times 10 to the negative 4 power cap c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6 point 7 times 10 to the negative 3 power T If the magnetic force is 3 point 5 times 10 to the negative 2 power cap n , how fast is the charge moving?

Two identical waves are traveling toward each other in the same medium. One has a positive amplitude, meaning that its peaks only go upward, and the other wave has a negative amplitude, with peaks going downward. What will occur when the waves peak at the same place at the same time?

A negative 0 point 0 6 cap c charge is placed is in a uniform electric field with a strength of 200 cap n over cap c What is the magnitude and direction of the force on the charge?

Which best explains the arrow’s purpose in the diagram?

Which best describes the difference between wave A and wave B?

What is the amplitude of the resulting wave when the two waves meet at point cap x ?

How does the circuit change when the wire is added?

Which statement describes what the hand shows?