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nadezda [96]
3 years ago
6

A copper sphere was moving at 40 m/s when it hit another object. This caused all of the KE to be converted into thermal energy f

or the copper sphere. If the specific heat capacity of copper is 387 J/(kg ⋅ C°), what was the increase in temperature? (2 points)
Group of answer choices

0.23 C°

0.81 C°

1.3 C°

2.1 C°
Mathematics
1 answer:
bogdanovich [222]3 years ago
5 0

Answer:

Step-by-step explanation:

.b

i just answered that question

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A.60 degrees <br> B.35 degrees<br> C.80 degrees <br> D.40 degrees
Romashka-Z-Leto [24]

Answer:

A. 60°

Step-by-step explanation:

There's a very straight-forward explanation for this, thank god! XD

For this type of problem, there's a rule to follow for the outside angle. X and 120 should equal 180, so all you need to do is fill that gap.

180-120 = 60

60 is your answer because it completes the whole angle.

5 0
3 years ago
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A consumer is considering two different purchasing options for the car of their choice. The first option, which is leasing, is d
AVprozaik [17]

Answer:

  • y=250x+4000
  • y=400x+400

Step-by-step explanation:

Given that:

  • x represents the number of months of ownership; and
  • y represents the total paid for the car after ‘x' months.

<u>First Option (Leasing)</u>

250x - y + 4000 = 0

Expressing the equation in the Slope-Intercept Form y=mx+b, we have:

y=250x+4000

<u>Second Option (Financing)</u>

$400 for 0 months of ownership, (0,400), and $4400 for 10 months of ownership, (10, 4400).

First, we determine the slope of the line joining (0,400) and (10,4400)

Slope, m= \dfrac{4400-400}{10-0}= \dfrac{4000}{10}=400

We have:

y=400x+b

When y=400, x=0

400=400(0)+b

b=400

Therefore, the Slope-Intercept Form of the second option is:

y=400x+400

<u>Significance</u>

  • In the first option, there is a down payment of $4000 and a monthly payment of $250.
  • In the second option, there is a down payment of $400 and a monthly payment of $400.

<u>Part B</u>

We notice from the graph that after 24 months, the cost for leasing and financing becomes the same ($10,000). Therefore, a consumer will be better off financing since the downpayment for leasing is higher.

<u>i.e </u>

  • When x=0, y=$4000 for leasing
  • When x=0, y=$400 for financing

4 0
4 years ago
-2b-6+3b-2 simplified
Natalka [10]

Answer:

Step-by-step explanation: b - 8

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faust18 [17]

Answer:

Step-by-step explanation:

4 0
3 years ago
Solve the inequality -2 &lt; 4x -10 &lt; 6
Dahasolnce [82]

Step-by-step explanation:

2<X<4 it may help you to understand.

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