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julsineya [31]
3 years ago
9

What is the difference between speed and velocity? A. Velocity takes acceleration into account, while speed does not. B. Speed t

akes acceleration into account, while velocity does not. C. Velocity is an expression of displacement per unit time, while speed is an expression of distance per unit time. D. Speed is an expression of displacement per unit time, while velocity is an expression of distance per unit time.
Physics
1 answer:
nalin [4]3 years ago
5 0
C!

V= displacement/time
Speed= distance/time

Displacement is the space between two points, usually from the first to last point, but doesn't have to be. (Basically, it's the distance between your starting and ending point). With displacement, direction matters, but with speed, direction doesn't.

Speed, on the other hand, is the entire traveled distance as a whole. Unlike displacement, direction doesn't matter.

I hope this helped!
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Sound energy cannot travel through <br> A vacuum,a wooden table,polluted air,pond water
FromTheMoon [43]

Sound energy cannot travel through a vacuum.

Explanation:

Waves are periodic disturbance of the space, which travel carrying energy but not matter.

There are two types of waves:

  1. Mechanical waves: mechanical waves propagate through the vibrations of the particles in a medium. Examples of mechanical waves are sound waves.
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In this problem, we are analyzing sound energy, which is the energy carried by sound waves. Sound waves are mechanical waves, so they need a medium to propagate: therefore, they cannot travel through a vacuum, since there is no medium.

So, sound energy cannot travel through a vacuum.

Learn more about waves:

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6 0
3 years ago
1). An Owl and bat share the same kingdom and phylum; an owl and a cardinal share the same kingdom, phylum, and class. The owl a
kolbaska11 [484]
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7 0
3 years ago
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Shrill sound is of -------------- *
Leona [35]

Answer:

Higher frequency.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.

Mathematically, the speed of a sound is given by the formula:

Speed = wavelength * frequency

Generally, the frequency of a sound wave determines the pitch of the sound that would be heard.

A shrill sound refers to a type of sound that is typically sharp, high pitched and as such has higher frequency.

Hence, shrill sound is of higher frequency.

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Answer:

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Physical development refers to the growth, physical and biological changes that happens in the humans body between birth and till they get to adolescence stage. There is development in brain, senses, they way they talk, physical appearance e.r.c.

Examples of these include, as humans grow, there is an increase in the way they interact with other people.

Babies tend to interact and learn new words even as their sense organs are been developed.

Cognitive development refers to how children develop in knowledge, skills, they way they think, their disposition and problem solving ability. These help children to think and understand their environment better.

Psychosocial development entails psychological and social development and it refers to how human personality is developed, acquiring social attitudes and skills from young age to adult. It entails how humans interact with their environment.

Moral development entails changes that occur in humans from childhood to adulthood by possesing the the skills and ability to know what is right and what is wrong i.e an understanding of morals behavior.

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