Visitor activity

grim

Public contributions from visitors who posted under the name grim.

Questions 643
Answers 0

Recent questions

Latest questions from grim

Choose the correct term to complete the sentence. The Doppler effect is the change in of a wave due to the motion of the source and/or receiver.
1 answer
What would happen to the speed of a sound wave if it moved from ocean water to air? What would happen to the speed of a sound wave if it moved from a cooler room to a warmer one?
1 answer
Use the image to answer the question. A horizontal spring with rings far apart, then close together and then far apart again labeled sound wave. Which of these objects would be most likely to create this sound wave? an e...
1 answer
Humans can typically perceive frequencies that range from 20 Hz–20 kHz. Dogs can hear sounds up to 45 kHz. Dog whistles produce sound waves that range from 23–54 kHz; therefore, they cannot be heard by the human ear. Whi...
1 answer
Which statements accurately describe sound waves? Check all that apply. Sound waves are transverse waves. Sound waves require a medium to transfer energy. Sound is heard when a vibration strikes the ear. Sound waves can...
1 answer
The speed of sound in ice, water, and steam is shown. A 3 column by 4 row table. Column 1 is titled Medium and includes the following entries: Ice, Water, Steam. Column 2 is titled Temperature (degrees Celsius) and inclu...
1 answer
As Aubrey watches this merry-go-round for a total of 2 minutes, she notices the black horse pass by 15 times. What is the period of the black horse? seconds
1 answer
Illustrations of 5 waves labeled red, violet, green, blue and orange. The wavelengths from shortest to longest are violet, blue, green, orange and red. Rank the colored waves in order of highest frequency to lowest frequ...
1 answer
Two illustrations of transverse waves. The one with shorter crests is labeled A. The wave with taller crests is labeled B. Which wave, A or B, has higher energy? A, because it has a higher amplitude B, because it has a h...
1 answer
Which statement correctly describes the relationship between frequency and wavelength? As the frequency of a wave increases, the wavelength increases. As the frequency of a wave increases, the wavelength decreases. As th...
1 answer
An illustration of a horizontal spring. In the spring are areas where the rings are closer together and areas where the rings are further apart. Two areas where the rings are closer together are labeled A, two areas wher...
1 answer
An illustration of a transverse wave with the high point of the wave labeled A, the low point of the wave labeled C, the height of the wave was labeled B and the distance between two adjacent low points labeled D. Label...
1 answer
What best describes a possible transfer of energy? A mechanical wave transfers energy through matter. A longitudinal wave transfers energy perpendicular to wave motion. A transverse wave transfers energy parallel to wave...
1 answer
Two waves are shown. Each wave has the same frequency and velocity. However, Wave B carries more energy. An illustration of two waves. Wave A has a smaller amplitude but the same wavelength of wave B. Wave A has a veloci...
1 answer
If a storm is 7.5 kilometers away, how much time is expected between observations of lightning and thunder? Round your answer to one decimal place. seconds
1 answer
An illustration of a ringing bell and dots representing air molecules. The dots are close together, then far apart and close together again representing a longitudinal mechanical wave of sound going from the bell to an e...
1 answer
Which statements accurately describe mechanical waves? Check all that apply. Energy is transferred through vibrating particles. A mechanical wave does not carry energy through matter. A longitudinal wave is a type of mec...
1 answer
Hands held around a burning candle. What facts about energy can be inferred from the image? Check all that apply. The candle is giving off light. Thermal energy flows from the hands to the candle. The candle is doing wor...
1 answer
Use the drop-down menus to complete each sentence. To run the experiment, you will alter the total mass in creating momentum of the carts. This total mass of the carts is the variable. Final velocity of the carts after t...
1 answer
Write a hypothesis about the effect of increasing the total mass of the carts on the final velocity after an inelastic collision. Use the "if . . . then . . . because . . ." format and be sure to answer the lesson questi...
1 answer
Use the drop-down menus to complete each sentence. To run the simulation, you will alter mass in creating momentum of the carts. The total mass of the carts in the collision is the variable. The velocity of the combined...
1 answer
A 4 column table with 3 rows. The first column is unlabeled with entries, Object 1, Object 2, Object 1 + Object 2. The second column is labeled m in kilograms with entries 2.0, 6.0, 8.0. The third column is labeled v in...
1 answer
Choose the person who best completes each statement. The outbreak and spread of epidemic diseases, such as swine flu, are tracked by a(n) . The person who would use equipment to show an image of a baby before birth is a(...
1 answer
Franklin has a new Ph.D in wildlife biology. His studies focused on the transmission of diseases in trees in the national forests. What kinds of workplaces would most likely be interested in hiring Franklin? Check all th...
1 answer
Which government agency worked with the US Army to get samples of the penicillin mold?
1 answer

Recent answers

Latest answers from grim

No public answers found for this visitor name.