The speed of sound is SLOWEST in (air/ water/ steel).

Answers

Answer 1

Answer:

In air

The speed of sound is slowest in air because sound depends on the medium it goes through and it is made from the vibrations passed on by particles in the medium to the next. In the air, the particles are the most far apart compared to the other two medium.

hope this helps! Giving me brainliest answer would be appreciated

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An object is dropped from the edge of a cliff and is moving at 26.5 m/s just before it hits the ground. How high is the cliff?11.0 m

260 m

35.8 m

848 m

Answers

Answer:

35.8 m

Explanation:

An appropriate formula is ...

$V_f^2-V_i^2=2ad$

The initial velocity is 0, and the acceleration due to gravity is 9.8 m/s², so the distance, d, is ...

$d=(26.5^2)/(2\cdot 9.8)\approx 35.8 \quad\text{m/s}$

A large container of water is sitting on a balance. The weight of the container plus the water is 10 newtons. An object the weight of 7 newtons hanging from a forcemeter is lowered towards the surface of the water . what reading on the force meter would you expect?

Answers

Answer:

Explanation:

Note that when an object is immersed in water it weighs less.

This means the weight seen is the apparent weight.

Now in water there is upthrust and is a counter force acting on the object and this force is opposite to the weight of the fluid alongside the container 10N

The apparent weight is the real weight - the upthrust

7N-10 = -3N

The essence of the negative sign is to show that this force is acting in opposite direction to the weight.

Note: the upthrust is 10N and it's opposite to the weight of the fluid and the tube on which the object on the force meter is subjected to.

If a ball is rolling with 5 pounds of force, how much force will be needed to stop the ball from rolling and why? A It would take 25 pounds of force to stop the ball from rolling becae it takes five times as much force to stop as object. B It would take 2.5 pounds of force to stop the ball from rolling becae it takes half of the amount of force to stop an object. C It would take 10 pounds of force to stop the ball from rolling becae it takes double the amount of force to stop an object. D It would take 5 pounds of force to stop the ball from rolling becae the same amount of force mt be ed to stop the object.

Answers

The answer is D, have a good day

Passengers fall forward when a bus suddenly stops. Using your knowledge of Newton's First Law and Inertia, explain why this phenomenon happens.

Answers

Answer:

The people on the bus fall forward because Newton's Law of Inertia states that and object in motion with stay in motion or an object at rest will stay at rest unless acted in by another force. The force of the bus stopping suddenly caused the passengers to fall forward because they were at rest position.

Which type of environment results from an equal amount of solute and solvent in and out of the cell?A. hypertonic environment
B. isotonic environment
C. hypotonic environment
D. flaccid

A molecule that moves across a cell membrane without using the cell's energy tends to move
A. away from the area of equilibrium.
B. away from the area where it is less concentrated.
C. away from the area where it is more concentrated.
D. toward the area where it is more concentrated.

Answers

Answer: The correct answer for first question is- B) Isotonic enviroment.

Isotonic environment is created in and outside a cell when the concentration of solute ( like salt) and solvent ( like water) are same on both the sides ( that is inside and outside the cell).

In other words, it represents the same osmolarity.

The correct answer for second question is- C) Away from the area where it is more concentrated.

When a molecule moves across a cell membrane without using energy, it represents passive transport. In this transport, molecules move from an area where their concentration is high to an area of lower concenteration.

Thus, option C) is the right answer.

The answer to the first question is C isotonic environment. To help me learn this I memorized that isotonic is equal hypotonic is over hydrated while hypertonic is dehydrated. And for the second question is they move from high to low so C

A snail can move approximately 0.30 meters per minute. How many meters can the snail cover in 15 minutes?

Answers

A snail can move approximately 0.30 meters per minute then it would cover 4.5 meters in 15 minutes.

What is speed?

The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object. The unit of speed is a meter/second. The generally considered unit for speed is a meter per second.

As given in the problem a snail can move approximately 0.30 meters per minute and we have to calculate the distance covered in 15 minutes.

speed of the snail = 0.30 meters per minute

time = 15 minutes

distance covered by the snail = speed ×time

distance covered by the snail = 0.30 ×15

distance covered by the snail = 4.5 meters

Thus, the distance covered by the snail in the 15 minutes would be 4.5 meters.

Learn more about speed from here,refer to the link ;

brainly.com/question/7359669

#SPJ2

distance = velocity (or speed) x time
so, distance = 0.30 meters.min x 15 mins
distance = 4.5 meters

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