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
Elza [17]
2 years ago
6

Children are sled riding on a hill One little girl pulls her sled back up the hill and does 379.5 joules of work while pulling i

t back up the 173 meter hill What amount of force did she exert on the sled?
Physics
1 answer:
Serggg [28]2 years ago
4 0

Answer:

2.2N

Explanation:

Given parameters:

Work done  = 379.5J

Height  = 173m

Unknown:

Amount of force exerted on the sled  = ?

Solution:

The amount of force she exerted on the sled is the same as her weight.

Work done is the force applied to move a body through a distance.

      Work done  = mgh

m is the mass

g is the acceleration due to gravity

h is the height

     mg  = weight;

        Work done  = weight x h

           379.5 = weight  x  173

           weight  = \frac{379.5}{173}   = 2.2N

You might be interested in
A heat engine uses thermal energy that flows from a heat source with a temperature of 325 K to a cold sink, which has a temperat
Ilya [14]
The answer is "58.5"
5 0
2 years ago
Read 2 more answers
What are the advantages and disadvantages of renewable and non-renewable energy?
bogdanovich [222]

Renewable energy

<u>Advantages :-</u>

1. Easily regenerate

2. Boost economic growth

3. Easily available

4. Support environment

5. Low maintenance cost

<u>Disadvantages :-</u>

1. Weather dependency

2. High installation cost

3. Noise caused by wind energy

4. Fluctuation problem (solar)

5. Intermittency issue (wind)

Non-renewable energy

<u>Advantages :-</u>

1. Concentrated energy source

2. Reliable energy source

3. Can be built anywhere

4. No radioactive waste

<u>Disadvantages :-</u>

1. Produces greenhouse gases

2. Contributes to global warming

3. Produces acid rain

4. Harmful to environment when they are burnt

<em>I hope this helps.....</em>

5 0
3 years ago
in an isolated system, two cars, each with a mass of 1,500 kg, collide. car 1 is initially at rest while car 2 is moving at 5 m/
kirza4 [7]

Answer:2.5 m/s

Explanation:

6 0
2 years ago
6. What disadvantages or pitfalls might be associated with using a fa ce book classroom page? Name at least two and discuss why
Novosadov [1.4K]

Answer:

poultion and canser

Explanation:

4 0
2 years ago
The most common form of angina is _______ angina. A. microvascular B. variant C. stable D. unstable
Paraphin [41]

The most common form of angina is stable angina.

C. stable

8 0
2 years ago
Read 2 more answers
Other questions:
  • Consider a high-speed bus colliding head-on with an innocent bug. The force of impact splatters the unfortunate bug over the win
    14·1 answer
  • A rope of total mass m hnd length L is suspended vertically with an object of mass M suspended from the lower end. Find an expre
    15·1 answer
  • MathPhys Help pls Tysm
    14·2 answers
  • What is a substance?
    6·1 answer
  • In a free fall experimate you determine the value of acceleration due to gravity (g) to be 9.50 m/s2 . The accepted value is 9.8
    9·1 answer
  • You connect a 100-resistor, a 800-mH inductor, and a 10.0-uF capacitor in series across a 60.0-Hz, 120-V (peak) source. The impe
    9·1 answer
  • HELP ME PLSSS I WILL GIVE YOU ANYTHING HELPPPPPPPP MEEEEEEEE
    14·2 answers
  • Sebanyak 80g emas bersuhu 30°C diberi kalor sebesar 1512 J.Jika kalor jenis emas 126 J/kg K,suhu akhir emas setelah diberi kalor
    10·1 answer
  • Which is the graph of the polar equation r = 4 cos3 theta
    5·2 answers
  • A wall (of thermal conductivity 0.98 W/m · â—¦ C) of a building has dimensions of 3.7 m by 15 m. The average inside and outside
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!