Acceleration
What is the rate of change of velocity.
Acceleration
Force x Distance
Work
What is frequency?
The rate at which current changes direction per second.
Can sounds travel in a vaccum?
No
Can light travel in a vaccum?
Yes
When an object moving with positive velocity is slowing down, the acceleration that it experiences is ___________.
Negative
Aiden pulls his little sister in a wagon with a constant force of 50 N over a distance of 100 m. How much work does Aiden do?
5,000 J
Which wave characteristics remains unchanged whenever a wave refracts?
Frequency
When a sound wave passes from air into water, which of the following would not change? Amplitude, Wavelength, Speed, Frequency
Frequency
When light passes through a narrow slit it bends around the edges of the opening. The slit becomes in essence a point source, with light emerging from it in all directions. This phenomenon is called...
Diffraction
If an object is thrown upward on the moon will it take longer or less time than earth?
It will take longer
When you burn oil, you are converting _______ energy to _______energy.
chemicalv -> thermal
If you are using a water tank in an investigation into waves, is a still image or a video a better choice for measuring wavelength?
A still image is better
A laser pointer is shone down into a lake. The light from the laser pointer goes from the air into the water. Which of the following correctly describes the change in the light as it enters the water?
Speed and wavelength both decrease.
Monochromatic light falls upon two slits separated by a distance of 2.0 x 10 −5 m. This results in bright lines appearing on a screen located 2.0 m from the slits. The 1 st order bright line is 6.0 cm away from the central bright line. What is the wavelength of this light?
6.0 x 10 ^(−7) m
A baseball is thrown straight upward and returns to the point from which it was thrown after 5.0 s. Find the baseball’s original speed. The acceleration of the baseball is 9.8 m/s2 downward.
25 m/s
A motorcycle has 10 J of kinetic energy. If its velocity is doubled, how much kinetic energy does it now possess?
40J
A water wave has a frequency of 2 Hz and a wavelength of 1.5 m. What is the speed at which this wave travels?
3 m/s
The length of a certain pipe is 0.70 m and it is open at both ends. What is the lowest frequency tuning fork that will resonate with the pipe? Use speed of sound 350 m/s.
250 Hz
Light of wavelength 555 nm falls upon a grating with 575 lines per millimeter. Determine the angle between the 1st and 2nd order bright lines that occur.
21.1
what equation contains at least one term in which an unknown variable is squared.
Quadratic
If a 14 kg box is raised to a height of 4.0 m on Earth, what is its gravitational potential energy relative to the ground?
550 J
Waves passing from a slow medium into a faster medium undergo refraction. Does the frequency increase or decrease?
It stays the same
A sound wave with amplitude 0.10 mPa and wavelength 2.0 m occurs in the same air as a second sound wave with amplitude 0.30 mPa and wavelength 2.0 m. If the two waves are in phase and travel in the same direction what is the amplitude and wavelength of the superposition?
0.40 mPa, 2.0 m
What travels faster than light?
Nothing!