Answer:
Step-by-step explanation:
x = 0.6 m
F = 78 N
Let k be the spring constant.
F = k x
78 = 0.6 k
k = 130 N/m
(a)
x = 5.5 m
W = 0.5 kx²
W = 0.5 x 130 x 5.5 x 5.5
W = 7865 J
(B) x = 1.5 m
W = 0.5 kx²
W = 0.5 x 130 x 1.5 x 1.5
W = 146.25 J
62 - .40 × 62 = 37.20
37.20 + 37.20 × .08 = 40.18
Answer:
which questions
Step-by-step explanation:
a or b or c
Answer:
1. a
2. c
3. e
Step-by-step explanation:
1. a because she ran 5 miles on friday and ran x miles before friday. we know she had ran a total of 20 miles so we have x+5=20
2. there is a total of 20 clubs andre's school, 5 times more than is cousin's school. we have 20 =5x
3. 20 cats get 5 cups of food. each got an x amount. we get 5 =20x