Answer:
B. The speed of sound in stone is slower than in wool.
Explanation:
A. All materials can transmit sound. True
Solids, liquids and gases can transmit sound even though the degree of transmission varies.
C. Sounds cannot move in vacuum. True
Sound cannot transmit in space. You can prove it using the "bell jar" experiment.
D. Sound loses its energy as it travels. True
Answer:
25J
Explanation:
Given parameters:
Mass of the dog = 10kg
Speed of the dog = 5m/s
Unknown:
The minimum energy required to stop the dog = ?
Solution:
The dog is moving with a kinetic energy and to stop the dog, an equal amount of kinetic energy generated must be applied to the dog.
To find the kinetic energy;
K.E = m v²
m is the mass
v is the velocity
Now insert the parameters and solve;
K.E = x 10 x 5 = 25J
The type of circuit which have been made is the series circuit in this scenario.
<h3>
What is a Series circuit?</h3>
This is a complete path which involves the whole electric current flowing through the various parts such as resistor etc..
There is only one path of current in which it does not undergo any form of split during motion.
Read more about Circuit here brainly.com/question/2969220
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