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Alina [70]
3 years ago
12

Erica, James, Stella, and Kim all did an experiment involving an electrically charged object. Who did repeated trials of his or

her experiment? (2 points)
Group of answer choices

Erica

Description Observation
Negatively Charged Balloon + Uncharged Paper The balloon attracts the paper.

Kim

Description Observation
Negatively Charged Balloon + Positively Charged Paper The balloon attracts the paper.

James

Description Observation
Positively Charged PVC Tube + Uncharged Paper The PVC tube attracts the paper.

Stella

Description Observation
Negatively Charged Balloon + Positively Charged PVC Tube The balloon attracts the PVC tube. The balloon attracts the PVC tube. The balloon attracts the PVC tube.
Mathematics
1 answer:
abruzzese [7]3 years ago
6 0

Answer:

D stella I think

Step-by-step explanation:

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When a constant force acts
yan [13]

Answer:

25

Step-by-step explanation:

First expression: A= k/M

when A = 15 and M = 5, k = A×M = 75

therefore, when M = 4, A = 75/3 = 25

7 0
2 years ago
Pls show work?!!!!!!!
Paraphin [41]

Answer: 55.5 (A.)

Step-by-step explanation:

Since angle A = 29 and angle B = 41, angle C must be equal to 110

180 = m<A + m<B + m<C

180 = 29 +41 + m<C

180 = 70 + m<C

110 = m<C

Therefore, side c must be the longest, side b must be the second longest, and side a must be the shortest.

Since side length a, angle A, and angle B are known, one can use the law of sines to solve for side b.

Law of Sines: sinA/a = sinB/b = sinC/c

sinA/a = sinB/b

sin29/41 = sin41/b

b(sin29/41) = sin41

b = 41(sin41)/(sin29)

b = 55.48

b = 55.5

7 0
3 years ago
a hat contains 3 blue and 5 black tickets. if one ticket is chosen at random from the hat what is the probability that it is blu
Nikitich [7]

Answer:

3/8

Step-by-step explanation:

3/(3 + 5) = 3/8

3 0
3 years ago
A tortoise is walking in the desert. It walks for 62.5 meters at a speed of 5 meters per minute.for how many minutes does it wal
iren2701 [21]

divide 62.5 by 5

62.5/5 = 12.5 minutes

6 0
3 years ago
Read 2 more answers
Hunter is 9 years older than 3 times the age of his nephew. Hunter is 33 years old. How old is his nephew?
kondor19780726 [428]

Answer:

8 years old.

(3x+9)

(3(8)+9)=33

7 0
4 years ago
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