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
hjlf
3 years ago
15

Leah is using a 3.4-meter ladder to paint the exterior of her house. Leah has a mass of 50 kilograms. The acceleration due to gr

avity is equal to 9.8 meters per second squared. What force, in Newton’s, does Leah exert on the ladder when standing on it?
Physics
2 answers:
allsm [11]3 years ago
3 0
The equation is Force = mass times acceleration so:
50 x 9.8 = 490 N
ExtremeBDS [4]3 years ago
3 0

Answer: 490 Newton.

The length of ladder is, <em>l</em> = 3.4 m.

The mass of leah is,m = 50 kg.

The acceleration due to gravity is, <em>g</em> = 9.8 m/s².

When Leah stand on the ladder the force exerted by her on the ladder is equal to her weight.F = W

Weight of leah is,

W=mg=50 \text k \text g \times 9.8 \text m / \text s^2 = 490 \text N


You might be interested in
Which graph shows the relationship between temperature, X, and kinetic energy, Y?
strojnjashka [21]
Answer: see the graph attached (straight line, passing through the origin and positive slope).


Justification:

1) Kinetic energy and temperature are in direct proportion. That means:

i)  Being kinetic energy y and temperature x: y α x

ii) That implies: y = kx,where k is the constant of proportionality.

iii) The graph is a line that passes through the origin and has positive slope k (k = y / x).

2) The proportional relationship between kinetic energy (KE) and temperature (T) is shown by the Boltzman law, which states:

Average KE = [3 / 2] KT, where K is Boltzman's constant, whose graph is of the form shown in the figure attached.

5 0
3 years ago
Read 2 more answers
If you wanted to learn more about what it was like to work in a family of scientists, whose life would you research?
Schach [20]

Answer:

Stephen hawking if his family were scientists

6 0
3 years ago
Read 2 more answers
Which best describes how combustion works?
jekas [21]
The answer is A, it breaks down and releases thermal energy. 
3 0
3 years ago
Read 2 more answers
why does diving 30m below sea level affect our bodies more than being in a building 30m above sea level
Genrish500 [490]
Imagine you are in a swimming pool 30m deep. Assuming you know that water is denser than air, you would know that the 30m of water above you will carry more weight, and press down on your body. Say you were in a swimming pool 60m deep, you would be sandwiched between 30m of water pressing down on you, and the upthrust created by the 30m of water below you.

In a building 30m up, the pressure will be regulated, as you are in a building. The floor will be strong enough to support the weight of the body, and the body will not recoil into itself.
5 0
2 years ago
William WangHomework #33 Regents Review (3)0989Assignment Mode : Open (Time On Task) 9 of 25 ListenDuring a collision, an 84-kil
Lemur [1.5K]

Answer:

1.7\cdot 10^3 N

Explanation:

The impulse theorem states that the product between the force and the time interval of the collision is equal to the change in momentum:

F \Delta t = m \Delta v

where

F is the force

\Delta t is the time interval

m is the mass

\Delta v is the change in velocity

Here we have

m = 84 kg

\Delta t = 1.2 s

\Delta v = 24 m/s

So we can solve the equation to find the force:

F= \frac{m \Delta v}{\Delta t }=\frac{(84 kg)(24 m/s)}{1.2 s}=1680 N \sim 1.7\cdot 10^3 N

4 0
3 years ago
Other questions:
  • Can someone explain what ice jacking is and how it can cause structures to fail?
    7·1 answer
  • Consider f(x) = -4x2 + 24x + 3. Determine whether the function has a maximum or minimum value. Then find the
    6·1 answer
  • Would electromagnetic waves exist if changing magnetic fields could produce electric fields but changing electric fields could n
    11·1 answer
  • Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed
    9·1 answer
  • Calculate the impulse of a 0.140 kg baseball that starts at rest on a tee and reaches a final velocity of 20 m/s after being str
    12·2 answers
  • How can you break open a coconut without ANY tools, only your hands, that means no rocks, no hammers, no special tools, and don'
    13·1 answer
  • If a green ball has a greater momentum than an orange ball and both balls are moving at the same velocity, then _________.
    13·2 answers
  • Calculate ine gravitational potential energy of the ball using pe=m×g×h.(use g=9.8 n/kg)
    15·1 answer
  • Which statements best describe displacement? Check all that apply.
    15·2 answers
  • Which can lead scientists to change a theory that has already been accepted? Check all that apply.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!