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3 years ago

X=3t^2-12t+5 calculate time t=1 and time when velocity zero

1 answer:

4 0

You plug your 1 into all spots where the variable is T. Then after you’ve done this, you simply simplify the problem. Then after simplifying you should have an equation where you are simply adding and subtracting which will give you the final answer of 2.

X=3T^2-12T+5
X=3(1)^2-12(1)+5
X=(3)^2-12+5
X=9-12+5

X=2

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To solve this problem we will apply the concepts related to the Doppler effect. This is understood as the change in apparent frequency of a wave produced by the relative movement of the source with respect to its observer. Mathematically this is given as,

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3 years ago

Calculate the work done by a person who exerts a force of 200.0 N in the horizontal direction on a box that moves 10.0 meters al

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Answer:

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Explanation:

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The following information is given

Force = 200.N

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based on the above information

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$\overset{F}{\rightarrow}. \overset{D}{\rightarrow}\\\\fd cos \theta$

Work done is

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The same is considered and relevant

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4 years ago

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u = Object distance = 2 cm

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$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{f}=\frac{1}{0.02}+\frac{1}{1}\\\Rightarrow \frac{1}{f}=\frac{1.02}{0.02}\\\Rightarrow \frac{1}{f}=51\\\Rightarrow f=\frac{1}{51}$

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$P=\frac{1}{f}\\\Rightarrow P=\frac{1}{\frac{1}{51}}\\\Rightarrow P=51\ D$

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