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
Scilla [17]
3 years ago
8

Manita carries a box of mass 40 kg. What is the weight of the box?( g=9.8m/s)​

Mathematics
1 answer:
Lilit [14]3 years ago
8 0

Explanation:

Mass of boy = 40 kg

Mass of box = 20 kg

Total mass = 60 kg

Initial potential energy = 0 (since height would be 0 initially)

Final potential energy = mgh

Taking g as 10 m/s²,

=> 60 × 10 × 15

= 9,000 J

So, work done = final potential energy - initial potential energy

= 9,000 J

Power = Work/Time

=> Power = 9000/25

=> Power = 360 J/s

or 360 watt.

You might be interested in
How to solve this brainteaser
laila [671]

Answer:

last row equals 333

Step-by-step explanation:

The clock showing time 9:00 should be worth 9 points, and the clock showing 3:00 should be worth 3 points, giving for the first row:

9 + 9 + 3 = 21

the three equal calculators showing 1234 are worth 10 points each:

1+2+3+4 = 10

and 10 + 10 + 10 = 30

the light bulbs should be 15 points each then giving 15 + 15 - 15 = 130 - 15 = 15 Notice also that they all have 5 rays of light coming out (so a 3 points per ray)

Now for the bottom line we have:

9 + (1+2+2+4) times 3 * 12 (only four rays on each bulb thus 4 * 3 = 12)

Notice we added the figures that appear in the calculator.

9 + 9 * 36 = 333

7 0
3 years ago
Colin invest in £5000 into his bank account. He receives 10% per year simple interest. How much will Colin have after 3 years?
pav-90 [236]

Answer:

£6655

Step-by-step explanation:

Given data

Principal=  £5000

Rate= 10%

Time = 3 years

FInal Amount A=???

The expression for the compound interest is given as

A=P(1+r)^t

substitute

A=5000(1+0.1)^3

A=5000(1.1)^3

A=5000*1.331

A= £6655

Hence the final Amount is  £6655

5 0
3 years ago
Write the following expression as a function of a positive acute angle. tan 245
weeeeeb [17]

Answer:

I think it’s A, Good luck!

Step-by-step explanation:

6 0
3 years ago
What statement describes the decimal equivalent of 3/ 8 ?
HACTEHA [7]

Answer:

0.375

Step-by-step explanation: All you need to do is divide 3 and 8

5 0
3 years ago
What were the factor(s), levels, and treatments for this experiment?
wolverine [178]

Step-by-step explanation:

A factor is an independent variable that is manipulated in an experiment.

Every factor has two or more levels, which are different values of the factor.

A combination of factor levels is called a treatment.

There is one factor: number of jumps.

This factor has two levels: sets of 10 and sets of 20.

For a single factor experiment, the levels are also the treatments: Jump 10 program and Jump 20 program.

8 0
3 years ago
Other questions:
  • What does ^ this stand for
    6·2 answers
  • If a given solution has a 10 percent solute concentration, and more solvent is added, the new solute concentration could be:
    9·2 answers
  • A random sample of size n = 60 is selected from a binomial distribution with population proportion p = 0.25.
    14·1 answer
  • What is a good estimate for the solution to the equation x3 = 95 how do you come up with your estimate
    6·1 answer
  • A salesperson earns commission on the sales that she makes each month.
    11·1 answer
  • 10 points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    12·2 answers
  • Amy was looking at a table of conversion from meters to kilometers the table shows that two common meters are equivalent to 2000
    8·1 answer
  • 9x-4y=-17 for y answer it for me plz
    10·2 answers
  • A lorry is travelling at 13.5m/s along a stretch of road​
    11·1 answer
  • 32 The area of a parallelogram is (32 + sqrt(2)) square feetIf the length of the base is (4 + sqrt(2)) feet, find the height of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!