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sasho [114]
3 years ago
10

An owl has a mass of 4.00 kg. It dives to catch a mouse, losing 800.00 J of its GPE. What was the starting height of the owl, in

meters?
Physics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

height =20m

Explanation:

gpe=mgh

800=4×10×x

40x=800

x=20

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If the resultant of two velocity vectors of equal magnitude is also of the same magnitude, then which statement must be correct?
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The correct option is C) The angle between the vectors is 120°.

Why?

We can solve the problem and find the correct option using the Law of Cosine.

Let A and B, the given two sides and R the resultant (sum),

Then,

R=A=B

So, using the law of cosines, we have:

R^{2}=A^{2}+B^{2}+2ABCos(\alpha)\\ \\A^{2}=A^{2}+A^{2}+2*A*A*Cos(\alpha)\\\\0=A^{2}+2*A^{2}*Cos(\alpha)\\\\Cos(\alpha)=-\frac{A^{2}}{2*A^{2}}=-\frac{1}{2}\\\\\alpha =Cos(-\frac{1}{2})^{-1}=120\°

Hence, we have that the angle between the vectors is 120°. The correct option is C) The angle between the vectors is 120°

Have a nice day!

4 0
3 years ago
I NEED HELP ASAP!!!
Savatey [412]
I think option C is correct..hope it helps
3 0
2 years ago
Read 2 more answers
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attashe74 [19]

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3. A bicycle has a momentum of 25.00 kg* m/s and a velocity of 2.5 m/s . What is the bicycle's
Anna35 [415]

Answer:

10 kg

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The question is most likely asking for the mass of the bicycle.

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Where p = momentum

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v = velocity

Hence, mass is:

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Mass is:

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In case the question requires the Kinetic energy of the bicycle, it can be gotten by using the formula

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Answer:

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Explanation:

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