Chemistry, 18.10.2020 15:01 Sanshine

Direction: Choose the letter of the BEST answer. 1. The method of detecting the presence, position and direction of motion of distant objects by reflecting a beam of sound waves is known as
A. RADAR
B. SONAR
D. CRO
C. MIR

2. When a wave travels through a medium
A. particles are transferred from one place to another
B. energy is transferred in a periodic manner
C. energy is transferred at a constant speed
D. none of the above statements is applicable

3. When sound travels through air, the air particles
A. vibrate along the direction of wave propagation
B. vibrate perpendicular to the direction of wave propagation
C. vibrate perpendicular to the direction of wave propagation
D. do not vibrate

4. Which of the following quantities tells how hot or cold an object is with respect to some standard?
A. Density
B. Mass
C. Pressure
D. Temperature

5. In which of the following water temperature will the movement of particles be
fastest?
B. 50°C of water
C. 70°C of water
A. 30°C of water
D. 90°C of water

6. How would you relate the temperature of the medium with the speed of sound?
A. The higher the temperature, the faster the sound travels.
B. The higher the temperature, the slower the sounds travel.
C. The lower the temperature, the faster the sound travels.
D. none of the above

help please need konapo

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 21.06.2019 13:50

How do the energy differences between the higher energy levels of an atom compare with the energy difference between the lower energy level of the atom

Answers: 1

Answer

Chemistry, 21.06.2019 16:00

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

Answers: 1

Answer

Chemistry, 21.06.2019 22:00

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. for example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g. which of the following sets include two samples with an equal density? which all that apply below 15.4 g gold and 18.7 g silver 15.2 g copper and 50.0 g copper 20.2 g silver and 20.2 g copper 11.2 g gold and 14.9 g gold

Answers: 1

Answer

Chemistry, 22.06.2019 11:30

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

Answers: 3

Answer

You know the right answer?

Direction: Choose the letter of the BEST answer. 1. The method of detecting the presence, position...

Questions