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
schepotkina [342]
3 years ago
13

Paul is running with a KE of 600 J if he starts at rest and his final velocity is 4 m/s what is his mass

Mathematics
1 answer:
gayaneshka [121]3 years ago
4 0
We use the kinetic energy equation and substitute our data solving for the mass:
ke = (1/2)mv^2
m = 2*ke/v^2
m = 2*600/4^2
m = 1200/16
m = 75 kg
we can substitute directly because the units are homogeneus in the SI system: J, m/s, kg
You might be interested in
n your computer store you charge $1012 per computer sold. Your costs are given by the equation C(x) = 4x^2 + 4x - 80 where x is
ella [17]

Answer:

63568 dollars

Step-by-step explanation:

Given that in your computer store you charge $1012 per computer sold. Your costs are given by the equation

C(x) = 4x^2 + 4x - 80

where x is the number of computers sold.

Revenue = sales price *no of computers sold

= 1012x

Profit = Revenue - cost

= 1012x-( 4x^2 + 4x - 80)\\= 1008x-4x^2+80\\

Use derivative test to find maximum profit

C'(x) = 1008-8x \\C''(x)= -x

Equate I derivative to 0

x= 128

i.e. if 128 computers are manufactured and sold profit wouldbemaximum

Profit maximum=1008(128)-4(128)^2+80\\=63568

3 0
3 years ago
A board is 7 feet 9 inches long. How long is it in inches?
Anika [276]
93 inches - 7 times 12 (inches in a foot)is 84 plus 9 is 93 inches.
6 0
3 years ago
Read 2 more answers
Help D: log3 x^6 =12 <br>find x
Zielflug [23.3K]

\log_ab=c\iff a^c=b\qquad(*)\\\\\log_ab^c=c\cdot\log_ab\qquad(**)\\\\---------------------\\\\\log_3x^6=12\qquad\text{use}\ (**)\\\\6\log_3x=12\qquad\text{divide both sides by 6}\\\\\log_3x=2\qquad\text{Use}\ (*)\\\\3^2=x\to\boxed{x=9}

8 0
3 years ago
Does anyone know the answer
vladimir1956 [14]

Answer:

yes me

Step-by-step explanation:

na jp ion know

3 0
3 years ago
Please answer the question on the image attached
belka [17]
Y= -2+21
This is because the slope needs to be the negative reciprocal of 1/2 so the slope is -2 then you take the point (5,11) and plug that an the -2 into y=m(x)+b and you solve for b. In the end you get 21
3 0
3 years ago
Other questions:
  • what is the different of the perimeter of the rectangle if its width has been increase by 7 and its length increase by 5
    13·2 answers
  • I NEED HELP WILL MARK YOU BARIN LISR PLEASE SHOW YOUR WOrk
    13·1 answer
  • Can anyone help me by answering all the unanswered question plzz. it is due tommorow.
    14·1 answer
  • A certain shade of pink is creating by adding 3 cups of red paint to 7 cups of white paint
    6·2 answers
  • Find the probability a random voltage is between 124.1 volts and 124.7 volts.
    11·1 answer
  • An example that disproves a conjecture. a Converse b Counterexample c Inverse d Contrapositive
    5·1 answer
  • What is the probability that a randomly selected candle is orange scented?
    12·1 answer
  • Please help! Correct answer only!
    15·1 answer
  • What gives the value of this expression -20/-4+(-15) (-2)
    9·1 answer
  • Jeremy tracked the temperature as a weather front crossed his region. The temperature rose 12 degrees, fell 27 degrees, and fina
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!