3 years ago

Glass pitcher metal spoon pencil

Physics

1 answer:

DanielleElmas [232]3 years ago

3 0

If the question is which one will magnetize
then the answer is metal spoon.

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tigry1 [53]

Answer:

Vy = 26 m/s sin 30 = 13 m/s vertical speed

t = Vy / a = 13 m/s / 9.80 m/s^2 = 1.33 sec time to reach Vy = 0

H = Vy t + 1/2 g t^2

H = 13 m/s * 1.33 sec - 1.33^2 * 9.8 / 2 m = 8.62 m

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1 year ago

If |v|= 11, |w|= 23, |v-w|= 30, find |v+w|

GenaCL600 [577]

Answer:

$|v+w|=20$

Explanation:

We are given that

|v|=11

|w|=23

|v-w|=30

We have to find the value of |v+w|

|a-b|^2=(a+b)\cdot (a+b)=a^2+b^2-2|a||b|cos\theta

Using the formula

$(30)^2=(11)^2+(23)^2-2(11)(23)cos\theta$

$900=121+529-506cos\theta$

$900-121-529=-506cos\theta$

$250=-506cos\theta$

$cos\theta=-\frac{250}{506}$

$|a+b|^2=|a|^2+|b|^2+2a\cdot bcos\theta$

Using the formula

$|v+w|^2=(11)^2+(23)^2+2(11)(23)\times (-\frac{250}{506})$

$|v+w|^2=400$

$|v+w|^2=(20)^2$

$|v+w|=20$

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3 years ago

Please HELP!!!!!!!!!!!!

Lunna [17]

Answer:

<em>If it served you, give me 5 stars please, thank you! </em>

<u>Muzzle velocity 300 m/s</u> corresponds to the .38 special

Thus, the shooter is Janice Jackson with .38 special.

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3 years ago

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hram777 [196]

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The net force on the object is zero.

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3 years ago

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forsale [732]

Answer:

Phase changes can be reversed

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