1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sesenic [268]
3 years ago
14

Double checking to see if i'm right!

Mathematics
1 answer:
Vinvika [58]3 years ago
4 0

Answer:

Yep! That looks right!

Step-by-step explanation:

You might be interested in
Suppose a force of 30 N is required to stretch and hold a spring 0.1 m from its equilibrium position. a. Assuming the spring obe
AlexFokin [52]

Answer:

a) k = 300\,\frac{N}{m}, b) \Delta U_{k} = 13.5\,J, c) \Delta U_{k} = 6\,J, d) \Delta U_{k} = 4.5\,J

Step-by-step explanation:

a) The spring constant is calculated by using this expression:

k = \frac{F}{x}

k = \frac{30\,N}{0.1\,m}

k = 300\,\frac{N}{m}

b) The work needed to compress the spring from its initial position is:

\Delta U_{k} = \frac{1}{2}\cdot k \cdot (x_{f}^{2}-x_{o}^{2})

\Delta U_{k} = \frac{1}{2}\cdot (300\,\frac{N}{m} )\cdot [(-0.3\,m)^{2}-(0\,m)^{2}]

\Delta U_{k} = 13.5\,J

c) The work needed to stretch the spring is:

\Delta U_{k} = \frac{1}{2}\cdot (300\,\frac{N}{m} )\cdot [(0.2\,m)^{2}-(0\,m)^{2}]

\Delta U_{k} = 6\,J

d) The work need to stretch the spring is:

\Delta U_{k} = \frac{1}{2}\cdot (300\,\frac{N}{m} )\cdot [(0.2\,m)^{2}-(0.1\,m)^{2}]

\Delta U_{k} = 4.5\,J

8 0
4 years ago
Read 2 more answers
A triangle with an area of 3 mm² is dilated by a factor of 6.
tresset_1 [31]
Did you find out the answer
8 0
3 years ago
Read 2 more answers
The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May it cost her $420 to drive 500 mi
djyliett [7]

Answer:

C(d) = \frac{1}{5}d + 320

Step-by-step explanation:

Given

d \to miles

C \to cost

So:

(d_1,C_1) = (500,420) --- May

(d_2,C_2) = (620,444) --- June

Required

Express as a function

Start by calculating the slope (m)

m = \frac{\triangle C}{\triangle d}

m = \frac{444-420}{620-500}

m = \frac{24}{120}

Simplify

m = \frac{1}{5}

The equation is:

C(d) = m(d - d_1) +C_1

C(d) = \frac{1}{5}(d - 500) +420

C(d) = \frac{1}{5}d - 100 +420

Take LCM

C(d) = \frac{1}{5}d + 320

6 0
3 years ago
The sum of the real numbers x and y is 11. Their difference is 5. What is the value of xy
Veseljchak [2.6K]

Answer:

x=6 y=5

Step-by-step explanation:

3 0
3 years ago
Constance is drawing a map of the block on which she lives, using a scale of 1 inch to 160 feet. The actual length of her block
Ivanshal [37]
It would be 11.25 inches because 1800 divided by 160 is 11.25
8 0
3 years ago
Read 2 more answers
Other questions:
  • Li invests money in a savings account. She wants to know the amount of simple interest that she will earn in 6 years at 3.75 per
    12·1 answer
  • What is the are of a triangle (picture provided)
    12·1 answer
  • F(t)=2t−3<br> f(7)=____<br><br> I need some help im not sure what to do here
    9·1 answer
  • Which statement is always true?
    14·2 answers
  • Pls <br> Help!!!!!<br> Directions: Find all missing angles.
    6·1 answer
  • GIVE ME THE ANSWER PLS
    7·2 answers
  • How do I solve this equation using long division?
    6·1 answer
  • Pls help me I’ll make u brainly
    7·1 answer
  • What is the exact value of tan(67.5°) ?
    15·2 answers
  • A home goods store purchased a desk lamp and marked it up 155% from the original cost of $9.12. Then, wanting to make room for s
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!