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7nadin3 [17]
3 years ago
13

How does the type of medium affect a sound wave?

Physics
1 answer:
Llana [10]3 years ago
7 0

The type of medium affects a sound wave as sound travels with the help of the vibration in particles. As different mediums have different amount and size of particles, for example, the speed of sound is faster through solid than liquid as solids have closely packed particles whereas liquids are loosely packed. Therefore the vibration is quicker in solids than liquids.

Hope it helps you! :)

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A cart moves along a track at a velocity of 3.5 cm/s. When a force is applied to the cart, its velocity increases to 8.2 cm/s. I
Lorico [155]

Answer:

3.13cm/s²

Explanation:

Given

Initial velocity u = 3.5cm/s

Final velocity v = 8.2cm/s

Time t = 1.5secs

Required

Acceleration of the cart a

To get that, we will use the equation of motion

v = u+at

Substitute the given parameters

8.2 = 3.5+1.5a

1.5a = 8.2-3.5

1.5a = 4.7

a = 4.7/1.5

a = 3.13cm/s²

Hence the acceleration to the cart is 3.13cm/s²

3 0
3 years ago
What is the Isotope notation for a Lithium atom?
Serggg [28]
Lithium has five isotopes, and each will have different notation. Lithium-7 is commonly used in salt and nuclear reactors. .ZAX , where X is the atomic symbol for the element, here Li for lithium, Z is the mass number, or the total number of protons and neutrons, and A is the atomic number, or the number of protons
6 0
3 years ago
Compare the momentums of a 50 kg dolphin swimming at 16.4 m/s and a 4100 kg elephant walking 0.20 m/s?
Mamont248 [21]
Their momentum is the same. 
momentum of dolphin=50kg*16.4m/s=820kg*m/s
momentum of elephant=4100kg*0.20m/s=820kg*m/s
6 0
3 years ago
Read 2 more answers
A sprinter runs 50m. You are given a stopwatch. Describe how you would measure: 1. the average speed of the sprinter over the en
Oksanka [162]

Answer:

Explanation:

Distance = 50 m

1. To find the average speed, first start the stop watch as the sprinter starts running and then stop it when he reaches the finish line.

Now note the time taken by the sprinter to run for 50 m.

The average speed of the sprinter is defined as the ratio of total distance covered to the total time taken.

Average speed = total distance / total time

2. To find the instantaneous speed, check the seed of the sprinter as he is at the finish line.

6 0
3 years ago
Using dimensional analysis, show that energy can be calculated from the following energy equations. Hint, in SI, here we want Jo
anyanavicka [17]

Explanation:

1. The kinetic energy of any object is calculated as :

E=\dfrac{1}{2}mv^2...........(1)

Dimensional formula of energy, [E]=[ML^2T^{-2}]

Dimensional formula of mass is [M]

Dimensional formula of velocity, [v]=[LT^{-1}]

[ML^2T^{-2}]=\dfrac{1}{2}[M]([LT^{-1}])^2

So, [ML^2T^{-2}]=[ML^2T^{-2}]

LHS = RHS

2. The potential energy is given by :

E=mgh

Dimensional formula of mass is [M]

Dimensional formula of g is [LT^{-2}]

Dimensional formula of height is [L]

Dimensional formula of energy, [E]=[ML^2T^{-2}]

So, E=[M][LT^{-2}][L]

So, LHS = RHS

Hence, this is the required solution.

7 0
3 years ago
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