Answer:
<h2>The answer is 30 s</h2>
Explanation:
The time taken can be found by using the formula
v is the velocity
a is the acceleration
From the question we have
We have the final answer as
<h3>30 s</h3>
Hope this helps you
D. All the three bulbs connected in the series circuit will burn at equal brightness.
<h3>What is series circuit?</h3>
A series circuit comprises a path along which the whole current flows through each component.
A parallel circuit comprises branches so that the current divides and only part of it flows through any branch.
In a series circuit, same current flows in each component of the circuit.
V = I(R₁ + R₂ + R₃)
where;
- R₁ is resistance of bulb 1
- R₂ is resistance of bulb 2
- R₃ is resistance of bulb 3
If all the bulbs have equal resistance, they will burn at equal brightness.
Thus, all the three bulbs connected in the series circuit will burn at equal brightness.
The correct option is D.
Learn more about series circuit here: brainly.com/question/19865219
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The average speed is 8 miles
Answer:
PE=0.29J
Explanation:
According to the description, there is a angle and in point swung upward of 70°
So,
Appling the equation of Potential Energy we have,
Given that the arc length is:
s = ∫ √[1² + (dy/dx)²] dx
<span>So arc length between the two points is then: </span>
<span>s = 2*20sinh(x/20)
= 40sinh(x/20) </span>
<span>The straight distance between the two points is : d = 2x </span>
<span>So, x = d/2.
= 40/2
= 20 m </span>
<span>Plug this into the arc length equation to get:
s = 40sinh[20/20)]
=40* ½ (e - 1/e) </span>
<span> = 47 m</span>