A teacher did an experiment to show the movement of particles in solids, liquids, and gases. The experimental set-up is shown be
low:
The dryer speed can be adjusted at low, medium, and high to represent each state of matter. Which combination of the state of matter and the corresponding dryer speed is correct?
A) liquid = low; solid = medium; gas = high.
B) solid = low; liquid = medium; gas = high.
C) liquid = low; gas = medium; solid = high.
D) gas = low; liquid = medium; solid = high.
The dryer speed can be adjusted at low, medium, and high to represent each state of matter. Which combination of the state of matter and the corresponding dryer speed is correct?
A) liquid = low; solid = medium; gas = high.
B) solid = low; liquid = medium; gas = high.
C) liquid = low; gas = medium; solid = high.
D) gas = low; liquid = medium; solid = high.
1 answer:
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Answer:
e. Object X has traveled four times as far as object Y.
Explanation:
The distance covered by an object in uniform accelerated motion is given by:
where
u is the initial velocity
t is the time
a is the acceleration
The two objects in the problem have same initial velocity, u = 0 (since they start from rest), so we can rewrite the equation as
We see that the distance covered is proportional to the square of the time. In this problem, the two objects X and Y have same acceleration, but object X accelerates for twice the time: since , this means that the distance covered by X will be
times higher that the distance covered by object Y.
Answer:
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<h3>a. Let us assume a body has initial velocity 'u' and it is subjected to a uniform acceleration 'a' so that the final velocity 'v' after a time interval 't'. Now, By the definition of acceleration, we have:</h3>It is first equation of motion.
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<h3>b. Let us assume a body moving with an initial velocity 'u'. Let it's final body 'v' after a time interval 't' and the distance travelled by the body becomes 's' then we already have,</h3>Putting the value of v from the equation (i) in equation (ii), we have,
It is third equation of motion.
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<h3>c. Let us assume a body moving with an initial velocity 'u'. Let it's final velocity be 'v' after a time and the distance travelled by the body be 's'. We already have,</h3>Putting the value of t from (i) in the equation (ii)
It is forth equation of motion.
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Hope this helps...
Good luck on your assignment..