Which type of wave requires a medium in which to travel? A) Heat B) Electromagnetic C) Light D) Mechanic

Answers

Answer 1

Answer:

Explanation:

Related Questions

Which of the following most directly shows how physics affects society?A. A car comes equipped with side air bags.B. A business conducts meetings over the Internet.O C. A surgeon performs a heart transplant.D. A singer wins an award for a song she wrote.
two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 206 Hz, and the other trucker hears a frequency of 189 Hz, determine the speed of the trucks. Use the speed of sound as 343 m/s. m/s
Nuclear energy use can negatively impact water quality. Please select the best answer from the choices provideda. True b. False
What occurs when someone places an ice pack on an injured ankle?Conduction causes the ice pack to lose thermal energy. Conduction causes the ankle to gain thermal energy. Cold from the ice pack is transferred to the ankle. Heat from the ankle is transferred to the ice pack.
A radio wave has a frequency of 5.5 × 104 hertz and travels at a speed of 3.0 × 108 meters/second. what is its wavelength? a. 5.5 × 104 meters b. 5.0 × 103 meters c. 5.5 × 103 meters d. 3.0 × 108 meters

Energy is measured in Joules (J). Which other quantity is measured in Joules?a. work
b. force
c. power
d. acceleration

Answers

I think the answer is B so force

Answer:

C. power

Explanation:

What is the slope of the line if the rise of a line on a distance versus-time graph is 900 meters and the run is 3 minutes?

Answers

Slope = (rise) / (run) = (900 meters) / (3 minutes). / / / Slope = 300 meters/minute or 5 meters/sec.

Rise/run so 900/3 which is 300 i am not sure if i am right but i think thats the answer

What is one key physical difference between transition metals and poor metals?

Answers

Answer:

HARDNESS

Explanation:

One key physical difference between transition metals and poor metals is their "" Hardness"" which is

the ability of a material to resist deformation. The test for hardness can be determined by a standard test which is the measurement of surface resistance to indentation. hardness tests are defined the shape and also type of indent.

The poor metals are also referred to as post transition metals. They are elements that are found at the right of the transition metals,they are located in the p-block,Their properties is as a result of their low melting and boiling point compare to other metals.They have high electronegativity and conductivity but softer texture compare to other metals.They are very soft more than the transition metals, but they cannot be cannot be classified as metalloids.

Poor metals includes elements in the periodic table such as; aluminium, gallium, indium, thallium, tin, lead, bismuth, and polonium.

Answer:

Hardness

Explanation:

I got it correct

An upward fold in a rock is called a plateau.
a. True
b. False

Answers

The answer is false because it is called an anticline.

the answer is false

Two factors affect the speed of a sound wave as it travels through a medium

Answers

Answer: The density and the temperature

Explanation:

Sound needs a medium to travel. The medium particles vibrate and transfer energy. Sound travels by compression and rarefaction of the medium particles. Thus, the speed of the sound varies with the density of the medium. If the medium is denser, the particles would be closer and energy would transmitted faster because there would be more rapid collisions which means that speed of the sound will be greater in a denser medium.Thus, speed of sound is fastest in solids than in liquids and is least in gases.

Speed of sound also depends on temperature. Greater the temperature, the particles would vibrate faster which would lead to again more inter particle collisions. Thus, the speed of sound would increase with increase in temperature.

The density of the medium and temperature affect the speed of sound waves.

If NEPA charges 5k per kWh, what is the cost ofoperating for 24 hours a lamp requiring 1A on a
200V line? A. 24K B. 55K C. 40K D. 26K
E. 32K.

Answers

Answer:

24k

Explanation:

We multiply by 200V by 24

Other Questions

1. Coherent beams with wavelengths of 400 nm intersect at points on the screen. What will be observed at these points interference maximum or minimum, if the optical path difference of the beam is in the 1st case A1=20 um and in the 2nd - A2=15 um? Find the order of minimum and maximum. 2. An installation for observing Newton's rings in reflected light is illuminated by monochromatic light incident normally to the plate surface. The distance between the second and fourth dark rings is 5 mm. Find the distance between the eighth and sixteenth light rings. 3. Find the angle between the main planes of the polarizer and the analyzer if the intensity of the natural light passing through the polarizer and the analyzer decreased by 5 times.

When we look into the night sky, we notice that there are stars dotted across the landscape. We also notice that there are regions of darkness. Knowing that there are more stars in the universe than there are grains of sand on Earth, which of the following statements best explains the regions of darkness in our night sky?

Select all the features that can be created by acidic water

Walking converts what type of energy into mechanical energy?