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
katrin2010 [14]
3 years ago
15

if you push a box a distance of 2000 meters with a force of 1 newton, how many calories have you used

Physics
1 answer:
kap26 [50]3 years ago
4 0
Note that
1 J = 0.239 cal

By definition,
Work = Force x Distance

Therefore work done is
W = (1 N)*(2000 m) = 2000 J

In calories,
W = (2000 J)*(0.239 cal/J) = 478 cal

Answer: 478 calories

You might be interested in
An automobile manufacturer claims that its
Vsevolod [243]

Answer:

uncle

Explanation:why not

4 0
3 years ago
Lenz’s law states that an induced magnetic field in a conductorA. Opposes the change in flux through the conductor.B. Opposes th
Paha777 [63]

Answer:

D. Opposes the applied flux through the conductor.

Explanation:

  • <em><u>According to the Lenz's law, the direction of induced e.m.f is such that it generates a current which in turn produces a magnetic field that would oppose the change causing it.</u></em>
  • In other words, the direction of any magnetic induction effect is such that it opposes the cause of the effect.
  • Therefore; an induced magnetic field in a conductor, opposes the applied flux through the conductor.
7 0
3 years ago
Read 2 more answers
The mass at time t of a radioactive substance is m(t)=m(0)ekt, where m(0) is the initial mass and k=−0.000135. The mean life M o
belka [17]

Answer:

7407.4 units

Explanation:

m(t) = m(0) e^kt

Here, k = - 0.000135

So, the above equation becomes

m(t) = m(0) e^(-0.000135 t)

Compare with the standard equation of radioactivity

m(t) = m(0) e^-λt

Where, λ be the decay constant

So. λ = 0.000135

The relation between the decay constant and the mean life is

ζ = 1 / λ

Where, ζ is the mean life

So, ζ = 1 / 0.000135 = 7407.4 units

4 0
4 years ago
Jose pushes a cart with a force of 12 N to the right. Lucy also pushes the cart with a force of 5 N to the right. John pushes th
cricket20 [7]

So, <u>their net force on the cart is 10 N to the right</u>.

<h3>Introduction</h3>

Hi ! Here, I will help you with the net forces (results of forces) acting on a two-dimensional area and in opposite directions. Steps that can be taken are as follows :

  1. Determine where the force will go, the important thing is that you are consistent until the end.
  2. Count the values of the force acting, the force against the direction of your mind in number 1 is given a negative sign.
  3. Look at the results, if it's marked (-), then choose the opposite direction from your thoughts at number 1.

The equation for calculating the net force from this two-dimensional straight line is as follows:

\boxed{\sf{\bold{\sum F = F_1 + F_2 + ... + F_n}}}

With the following condition :

  • \sf{\sum F} = net force (N)
  • \sf{F_1} = first force and its direction (N)
  • \sf{F_2} = second force and its direction (N)
  • \sf{... + F_n} = You can add up the force values as many times as the question (N).

<h3>Problem Solving</h3>

We know that :

In my mind, I determined that the force will go to the right. So :

  • \sf{F_1} = Jose's force = 12 N >> Because he already walk to the right.
  • \sf{F_2} = Lucy's force = 5 N >> Because she already walk to the right.
  • \sf{F_3} = John's force = -7 N >> Because he is walked to the left.

What was asked :

  • \sf{\sum F} = net force = ... N

Step by step :

\sf{\sum F = F_1 + F_2 + F_3}

\sf{\sum F = 12 + 5 + (-7)}

\sf{\sum F = 17 - 7}

\boxed{\sf{\sum F = 10 \: N \: to \: the \: right}}

<h3>Conclusion</h3>

The movement of the cart is to the right because the net force value that I calculated is not opposite (with negative sign) to the right direction. So, their net force on the cart is 10 N to the right.

5 0
2 years ago
A car accelerates at a rate of 4 m/s in 5 s. Calculate the change of velocity PLS HELP
garri49 [273]

Answer:

Explanation:

a=Δv/Δt

Δv=a*Δt

a=4 m/s2

t=5 s

Δv=4*5

Δv=20 m/s

6 0
4 years ago
Other questions:
  • When four people with a combined mass of 320 kg
    15·1 answer
  • Jamie rolls a ball along the floor in a straight line. Even though no one touches the ball, it eventually stops moving.
    6·2 answers
  • When an inclined plane is used, A. the mechanical advantage increases as the height increases. B. a smaller force is exerted ove
    10·1 answer
  • Which would be the most reliable source of information about the weather?
    7·2 answers
  • Sort the statements about heat transfer into the correct columns.
    14·2 answers
  • Does science support the idea that humans have influenced global warming? Provide specific examples that show how two knowledgea
    12·1 answer
  • Any five physics problems
    9·1 answer
  • A 20 kg mass is moving at 10 m/s and collides with a stationary 5 kg mass, transferring all its momentum in the collision, what
    7·1 answer
  • PLZZZZ HELPPPPPP MEEEEEE!!!!!! ASAP!!! ILL GIVE 20 POINTS AND BRAINLIEST!!!<br> :'(
    5·1 answer
  • Round your decimal answer to the nearest hundredth.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!