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
kati45 [8]
3 years ago
9

sledge (including load) weighs 5000 N. It is pulled on level snow by a dog team exerting ahorizontal force on it. The coefficient

of kinetic friction between sledge and snow is 0.05. Howmuch work is done by the dog team pulling the sledge 1000 m at constant speed?
Physics
1 answer:
lara31 [8.8K]3 years ago
6 0

Answer:

2.5 x 10^{5} J

Explanation:

weight = 5,000 N

coefficient of friction = 0.05

distance = 1000 m

how much work is done by the dogs pulling the sledge

work done = force x coefficient of friction x distance

work done = 5000 x 0.05 x 1000 = 2.5 x 10^{5} J

You might be interested in
You look at a barometer and see that the air pressure is getting much higher... How will the weather probably change? *
Murljashka [212]

Answer:

The weather will clear up and get sunnier.

Explanation:As weather forecasters monitor air pressure, falling barometer measurements can signal that bad weather is on the way. In general, if a low pressure system is on its way, be prepared for warmer weather with storms and rain. If a high pressure system is coming, you can expect clear skies and cooler temperatures.

hope this helped:)

Brainliest?

8 0
2 years ago
Read 2 more answers
A car moving with a speed of 35 m/s sees a child standing in the
zlopas [31]

Answer:

2100 N

Explanation:

v = u + at \\ 0 = 35 + a(5) \\ a =  - 7m {s}^{ - 2}  \\ \\ net \: force \:  = ma \\  = (300)(7) \\  = 2100 \: newtons

6 0
2 years ago
What is unique regarding the abdominal muscle when is compared to other muscle in the body?
marissa [1.9K]
Answer:a is the answer
8 0
2 years ago
What are sun spots??????????
babymother [125]
Sunspots<span> are temporary phenomena on the </span>Sun<span>'s photosphere that appear as </span>spots<span> darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. </span>Sunspots<span> usually appear in pairs of opposite magnetic polarity.

</span>
4 0
3 years ago
Read 2 more answers
A linear network has a current input 7.5 cos(10t + 30°) A and a voltage output 120 cos(10t + 75°) V. Determine the associated im
Leona [35]

Answer:

16∠45° Ω

Explanation:

Applying,

Z = V/I................... Equation 1

Where Z = Impedance, V = Voltage output, I = current input.

Given: V = 120cos(10t+75°), = 120∠75°,  I = 7.5cos(10t+30) = 7.5∠30°

Substitute these values into equation 1

Z = 120cos(10t+75°)/7.5cos(10t+30)

Z = 120∠75°/ 7.5∠30°

Z = 16∠(75°-30)

Z = 16∠45° Ω

Hence the impedance of the linear network is 16∠45° Ω

8 0
3 years ago
Other questions:
  • A scientist is subjected to a dose of ionizing radiation in his laboratory. without the help of radiation detection instruments,
    9·1 answer
  • Birds sitting on a single power line don't get shocked. But if they were to place one foot on each of two lines, ___________ wou
    6·2 answers
  • A small car and a large truck are both driving south at 40 km/h. Which of the following is true?
    15·1 answer
  • VR of a single movable Pulley is 2,why?​
    7·1 answer
  • When a rattlesnake strikes, its head accelerates from rest to a speed of 28 m/s in 0.65 seconds. Assume for simplicity that the
    9·1 answer
  • Positive and negative charger objects affect which type of field?
    15·1 answer
  • I NEED THIS ASAP!!<br> Which formula defines the unit for electrical power?
    9·2 answers
  • What is the overall moment?
    5·1 answer
  • What is a quasar made of?
    12·1 answer
  • Magnesium hydroxide is a common ___?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!