It's mechanics
sometimes: Newton's motion
Answer:
<h3>The answer is option B</h3>
Explanation:
The frequency of a wave can be found by using the formula

where
c is the velocity
From the question
wavelength = 0.39 m
c = 86 m/s
We have

We have the final answer as
<h3>200 Hz</h3>
Hope this helps you
Answer:
Your answer is right, Fiscal policy is basically when a government makes changes to an economy and increasing government spending and decreasing taxes is used when they need to boost the economy, meaning Fiscal Policy in times of a recession.
Explanation:
Answer:
525,000J
Explanation:
Power = work/time
Given
Power = 350 watts
Time = 25 mins = 25 x 60 = 1500 secs
Therefore
350 = work/1500
Cross multiply
Work = 350 x 1500
Work = 525,000J
Answer:
The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.
Explanation:
Brightness of the bulb is given as

since all bulbs are connected in parallel so here voltage across each bulb will remain same and resistance of each bulb is "R"
So here power across each bulb will remain the same always.
So there will be no effect on the power or brightness of bulb.
Now we also know that equivalent resistance is given as


so here equivalent resistance will decrease on adding more resistance in parallel.
so correct answer will be
The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.