Answer:
The roof and walls of the auditorium or cinema hall are generally covered with sound absorbent materials like draperies or compressed fibreboard to reduce reverberation. These materials reduce the formation of echoes by absorbing sound waves.
hope it helps!
Answer:
B. 3 m/s
Explanation:
We can solve the problem by using the law of conservation of momentum; in fact, the total momentum before and after the collision must be conserved. So we can write:
where:
m1 = 150 kg is the mass of spaceship 1
m2 = 150 kg is the mass of spaceship 2
u1 = 0 m/s is the initial velocity of spaceship 1
u2 = 6 m/s is the initial velocity of spaceship 2
v is the velocity of the two ships after they collide and stick together
Solving for v, we find:
The convection currents in the student’s model different from the convection currents in Earth’s atmosphere and oceans, The sun. Because heats is obtained from the sun, is transferred to the Earth's atmosphere and seas.
<h3 /><h3>What is an experiment?</h3>
An experiment is a technique used to prove or disprove a theory, or to test the efficacy or probability of something that has never been done before.
The burner underneath the kettle is the source of heat in this experiment. On Earth, however, this is not the case since the source of heat is the Sun, which heats us from above rather than below.
Convection currents continue to flow in the same direction because when the sun heats air particles on the Earth's surface,
They ascend, but cool as they continue to climb. This causes them to descend, where they are heated up once more.
Hence,heats is obtained from the sun, is transferred to the Earth's atmosphere and seas.
To learn more about the experiment, refer to the link;
brainly.com/question/11256472
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K= (1/2) m v^2
so 0.5*0.145*<span>1281.64=92.92J of KE</span>
The rotational speed of the two children is the same.
In fact, it is defined as
where
is the angle covered in the time
. As it can be seen, this quantity does not depend on the distance from the centre, so the rotational speed is 4.0 revolutions per minute for both children.