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
MAXImum [283]
4 years ago
12

The forklift exerts a 1,500.0 N force on the box and moves it 3.00 m forward to the stack. How much work does the forklift do ag

ainst the force of gravity?
A) 1.50 × 10^3 J

B) 0.00 J

C) 500 J

D) 4.50 × 10^3 J

I think it is D, but I can also justify B, please help!
Physics
1 answer:
Deffense [45]4 years ago
7 0
The answer is D using the work formula
W= F•d but if it was against gravity, it would be 0 if gravity is exerting the same amount, I would pick D using the formula, but I'm not so sure sorry
You might be interested in
Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in se
just olya [345]

Answer:

1.61ohms and 4.39ohms

Explanation:

According to ohm's law which States that the current (I) passing through a metallic conductor at constant temperature is directly proportional to the potential difference (V) across its ends. Mathematically, E = IRt where;

E is the electromotive force

I is the current

Rt is the effective resistance

Let the resistances be R and r

When the resistors are connected in series to a 12.0-V battery and the current from the battery is 2.00 A, the equation becomes;

12 = 2(R+r)

Rt = R+r (connection in series)

6 = R+r ...(1)

If the resistors are connected in parallel to the battery and the total current from the battery is 10.2 A, the equation will become;

12 = 10.2(1/R+1/r)

Since 1/Rt = 1/R+1/r (parallel connection)

Rt = R×r/R+r

12 = 10.2(Rr/R+r)

12(R+r) = 10.2Rr ... (2)

Solving equation 1 and 2 simultaneously to get the resistances. From (1), R = 6-r...(3)

Substituting equation 3 into 2 we have;

12{(6-r)+r} = 10.2(6-r)r

12(6-r+r) = 10.2(6r-r²)

72 = 10.2(6r-r²)

36 = 5.1(6r-r²)

36 = 30.6r-5.1r²

5.1r²-30.6r +36 =

r = 30.6±√30.6²-4(5.1)(36)/2(5.1)

r = 30.6±√936.36-734.4/10.2

r = 30.6±√201.96/10.2

r = 30.6±14.2/10.2

r = 44.8/10.2 and r = 16.4/10.2

r = 4.39 and 1.61ohms

Since R+r = 6

R+1.61 = 6

R = 6-1.61

R = 4.39ohms

Therefore the resistances are 1.61ohms and 4.39ohms

5 0
3 years ago
You stretch a spring by a distance of 0.3 m. The spring has a spring constant of 440 N/m. When you release the spring, it snaps
QveST [7]
The kinetic Energy has to be the same as the Energy with which the spring was stratched:
1/2×m×v^2=1/2×D×s^2
Ekin=1/2×440×0.3^2= 1/2×440×0.09=19.8. ( Of course, the kinetic Energy is normally Not calculated Like this , but in this case both Formulas have the Same solution so you can Wright it Like This)
By the way, if the spring Had Not reached its Natural length yet, you wouldnt be right if you calculate it Like above, because a Part of the Energy is still in the spring : Espring=Ekin+Espring2
3 0
4 years ago
PLSSSS Jenny runs every morning for exercise she takes 25 minutes to run 1,000 m and walk 1,600 m or 20 minutes to run 2,000 m a
ELEN [110]

The running speed of Jenny willl be 2.5 times the velocity she walks.

<h3 /><h3>What is velocity?</h3>

The change of distance concerning to time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.

Condition 1;

She takes 25 minutes to run 1,000 m and walk 1,600 m The total time to run as well as the walk is 25 minutes.

\rm  t = t_r +t_w \\\\ 25 =  t_r +t_w

As we know that;

Distance = speed × time

\rm x_r = v_r \times t_r \\\\ t_r = \frac{x_r}{v_r}

For walking;

\rm t_w = \frac{x_w}{v_w}

\rm  t = t_r +t_w \\\\ 25 = \frac{x_r}{v_r} +\frac{x_w}{v_w} \\\\  25 = \frac{1000 \ m}{v_r} +\frac{1600 \ }{v_w} \\\\ 40 v_w +64 v_r = v_rv_w

Same as for condition 2;

\rm 100 v_w + 40 v_r = v_rv_w

\rm 40 v_w +64 v_r =\rm 100 v_w + 40 v_r \\\\ v_r = 2.5 v_w

Condition 3;

\rm d_w = 800 \ m

\rm d_w = v_w \times t_w

\rm t_w  = \frac{d_w}{v_w } \\\\ \rm t_w  = \frac{800}{v_w } \\\\

Hence their running speed of Jenny willl be 2.5 times the velocity at she walks.

To learn more about the velocity, refer to the link: brainly.com/question/862972.

#SPJ1

5 0
2 years ago
2. What is the least possible error encountered
AlekseyPX

Answer: b 0.5mm

Explanation:

6 0
3 years ago
Read 2 more answers
Gravitational potential energy is proportional to both mass and height above a reference level.
denis23 [38]
The statement is true. gpe= m x g x h
3 0
4 years ago
Other questions:
  • Sam has been working to improve his muscular fitness. He jumps rope and trains with weights. What will most likely be the result
    12·2 answers
  • Sam drives 8 miles west to the store in 10 min. Then he
    5·1 answer
  • 7. Choose the correct reaction type for the following.<br> 2KCl → 2K+ Cl2
    9·1 answer
  • Which sentence describe newton's third law?
    10·1 answer
  • Multiply the following three numbers and report your answer to the correct number of significant figures: 0.020cm x 50cm x 11.1c
    11·1 answer
  • The speed and direction of a moving object referred to as which of the following
    10·1 answer
  • A mass m = 0.6 kg is released from rest at the top edge of a hemispherical bowl with radius = 1.1 meters. The mass then slides w
    12·1 answer
  • a) One of the moons of Jupiter, named Io, has an orbital radius of 4.22 108 m and a period of 1.77 days. Assuming the orbit is c
    15·1 answer
  • PLEASE SOMEONE HELP ME ILL GIVE THE PERSON BRAINLIEST
    11·1 answer
  • What happens when a mixture is separated
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!