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
levacccp [35]
3 years ago
13

A man weighing 48 newtons climbs a 2.0-meter ladder. How much work is done? 0.0 J 24 J 96 J 124 J

Chemistry
2 answers:
Hoochie [10]3 years ago
5 0

Answer:C) 96 j

explanation:48 N * 2.0 m = 96. Your answer should be C, 96 joules.

oee [108]3 years ago
5 0

<u>Answer:</u> Work done by the man will be 96 J.

<u>Explanation:</u>

Work is defined as the amount of energy that is transferred in order to move an object by an external force. It is expressed in joules.

Mathematically,

W=F\times d

Where,

W = Work done = ? J

F = Force applied = 48 N

d = Displacement of the body = 2 m

Putting values in above equation, we get:

W=48\times 2=96J

Hence, work done by the man will be 96 J.

You might be interested in
What is the purpose of galvanization?​
frutty [35]
Galvanizing protects from rust in a number of ways: It forms a barrier that prevents corrosive substances from reaching the underlying steel or iron. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.
4 0
3 years ago
If an object has 25 newtons of force pushing from the left and 26 newtons of force pushing from the right the object will
IRISSAK [1]

Answer:

C. move left

Explanation:

The object will move towards the left direction due to the unbalanced forces that are acting on it.

 The resultant force on the object will be 1N in the left direction

  • The resultant force on a body is that singular force that will have the same effect as the different forces that acts on a body
  • When forces acts in opposite directions, they are subtracted
  • The object will move in the direction of the one with the greater force

So;

  Resultant force = 26N - 25N  = 1N

The body moves 1N to the left

7 0
2 years ago
If 250.0 g of water at 30.0 °C cool to 5.0 °C, how many kilojoules of energy did the water lose?
Y_Kistochka [10]

Answer:

-26.125 kj

Explanation:

Given data:

Mass of water = 250.0 g

Initial temperature = 30.0°C

Final temperature = 5.0°C

Amount of energy lost = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT = 5.0°C - 30.0°C

ΔT = -25°C

Specific heat of water is 4.18 j/g.°C

Now we will put the values in formula.

Q = m.c. ΔT

Q = 250.0 g × 4.18 j/g.°C × -25°C

Q = -26125 j

J to kJ

-26125 j ×1 kj /1000 j

-26.125 kj

5 0
3 years ago
Look at the image pls. The question is there
ira [324]

Answer:

Look at the image pls. The question is there

:

4 0
2 years ago
When a 0. 1 m aqueous solution of hydrocyanic acid, hcn, reaches equilibrium, the ph is measured to be 5. 20. using this informa
Sav [38]

When a 0. 1 m aqueous solution of hydrocyanic acid, HCN, reaches equilibrium, the ka for hydrocyanic acid is  3.969 x 10⁻¹⁰.

<h3>What is ka value?</h3>

It's the value of equilibrium constant for the dissociation of ions into a solution. The more the Ka value the more will be dissociation.

Ka = [H₃O⁺]² / [HCN] [H₃O⁺]

The pH is 5.20

-log [H₃O⁺] = 5.20

Putting antitlog both side.

The value will be 6.30 x 10⁻⁶

Ka = (6.30 x 10⁻⁶)²  / 0.1 - 6.30 x 10⁻⁶

0.1 - 6.30 x 10⁻⁶ = 0.1

Ka = 3.969 x 10⁻¹⁰

Thus, the Ka value for hydrocyanic acid is 3.969 x 10⁻¹⁰.

To learn more about ka value, refer to the link:

brainly.com/question/2796803

#SPJ4

7 0
1 year ago
Other questions:
  • A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research techni
    13·1 answer
  • What is the product if an atom of Po-209<br> undergoes alpha decay?
    13·1 answer
  • As you move from top to bottom down a group on the periodic table size of an atom will
    12·2 answers
  • Magnesium hydroxide is used as an antacid in milk of magnesia and reacts with hydrogen chlrode in the stomach to form water and
    9·1 answer
  • In which state of matter are the particles least able to move?
    7·1 answer
  • Heat is which of the following???
    7·1 answer
  • Hello, <br><br> So I was wondering if this is correct... Is it?
    10·2 answers
  • Two<br>moin tunetons of carbohydraus​
    15·1 answer
  • Which pair of elements has reactivity that is similar to chlorine, Cl? F. Fluorine and Argon G. Fluorine and Iodine H. Sulfur an
    10·1 answer
  • Write the balanced equation fr this chemical reaction _Mg + _O2 -&gt; _MgO​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!