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3 years ago

2. How does changing the skater's mass affect the potential energy of the skater?

Mathematics

1 answer:

madam [21]3 years ago

3 0

Answer:

E=MC squared, the greater the mass the more momentum it generates and therefore, more energy

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Find (r-s) (t-s) + (s-r) (s-t) for all numbers r, s, and t. (a) 0 (b) 2 (c) 2rt (d) 2(s-r) (t-s) (e) 2(r-s) (t-s)

lyudmila [28]

Notice that the 2 expressions have 2 common terms.

(r-s) is just (s-r) times (-1)

similarly

(t-s) is just (s-t) times (-1)

this means that :

(r-s) (t-s) + (s-r) (s-t)=-(s-r)[-(s-t)]+(s-r) (s-t)

the 2 minuses in the first multiplication cancel each other so we have:

-(s-r)[-(s-t)]+(s-r) (s-t)=(s-r) (s-t)+(s-r) (s-t)=2(s-r) (s-t)

Answer:

d)<span>2(s-r) (t-s) </span>

3 0

4 years ago

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A school bus has 22 rows of seats, and 4 students can be seated in each row. Students riding in the bus have filled 19 rows of s

Lelu [443]

Answer:

Step-by-step explanation:

total no. of seats = 22 x 4 = 88

total no. of seats occupied = 19 * 4 + (22-19)*4/2 = 76 + 6 = 82

no. of empty seats = 88 -82 = 6

3 0

2 years ago

Which of the following is an example of a non-repeating, non-terminating decimal

ruslelena [56]

Answer:

Step-by-step explanation:

None of the numbers repeat unlike the other decimals

3 0

3 years ago

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Five friends take a maths test

gulaghasi [49]

Answer:

Adam scored 60, Brandon scored 66, Chen scored 74, Damion scored 75, and Erica scored 75.

Step-by-step explanation:

Since five friends took the maths test, and Adam, Brandon, and Chen together together scored 200 marks; Brandon, Chen and Damion together scored 215; Chen, Damion and Erica together scored 224; and Damion and Erica scored more than Chen; While the five of them together scored 350 marks, to determine what are their individual scores the following calculations must be performed:

Adam + Brandon + Chen = 200

Damion + Erica = 150

Brandon + Chen + Damion = 215

Adam + Erica = 135

Chen + Damion + Erica = 224

Adam + Brandon = 126

Adam + Brandon = 126 + Chen = 200

Chen = 200 - 126

Chen = 74

Damion and Erica scored more than Chen

Chen + Damion + Erica = 224

74 + Damion + Erica = 224

Damion + Erica = 150

Damion = 75

Erica = 75

Brandon + Chen + Damion = 215

Brandon + 74 + 75 = 215

Brandon = 215 - 74 - 75

Brandon = 66

Adam = 350 - 75 - 75 - 74 - 66

Adam = 60

Therefore, Adam scored 60, Brandon scored 66, Chen scored 74, Damion scored 75, and Erica scored 75.

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3 years ago

A point is on a circle of the distance from the center of the circle to the point is equal to the

maks197457 [2]

<h3>Answer: Radius</h3>

Let point A be the center of the circle. Point B is somewhere on the circle edge. The distance from A to B is equal to the radius. The radius is half the diameter which spans the whole circle and it goes through the center. The circumference is the curved distance around the whole circle's perimeter.

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4 years ago

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