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
mina [271]
2 years ago
5

A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the

loaded sled with its rider has a mass of 210 kg. (a) Calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185 N backward on the snow. (b) What is the magnitude of the acceleration once the sled starts to move
Physics
1 answer:
liberstina [14]2 years ago
8 0

Answer

given,

number of dog = 8

mass of each dog= 19 Kg

mass of sled = 210 Kg

average force = 185 Nss

a) writing all the horizontal force

   force acting by dog - friction force = (M + 8m) a

   8 F_d - μ m g = (M + 8m) a

assuming coefficient of friction of snow be μ = 0.14

    8 x 185 - 0.14 x 210 x 9.8 = (210 + 8 x 19 ) x a

               a = 3.29 m/s²

b)  the kinetic friction of coefficient is less than static friction

 hence, we can suggest that acceleration of the sled will increase once the sled start to move.

                a > 3.29 m/s²

You might be interested in
The number ocean waves that pass a buoy in one second is _ of the wave
mr_godi [17]
The number of ocean waves that pass a buoy in one second is the frequency of the <span>wave. The crest of a transverse wave is its highest point. </span>
7 0
2 years ago
Read 2 more answers
What electrical force dies a Uranium nucleus exert on one of its inner electrons, located at a distance of 175 picometers (= 1.7
AlekseyPX

Answer:

correct option is d) 7.0 x 10^-7 N

Explanation:

given data

distance = 175 picometers = 1.75 × 10^{-10}  m

to find out

electrical force

solution

we know atomic no of uranium is 92

and charge on electron is = 1.6 × 10^{-19} C

and electrical force is express as

electrical force = \frac{1}{4 \pi \epsilon _o} \frac{q1q2}{r^2}    .............1

put here value we get

electrical force = 9*10^9 \frac{92*(1.6*10^{-19})^2}{(1.75*10^{-10})^2}

electrical force =  6.921 × 10^{-7} N

so correct option is d) 7.0 x 10^-7 N

5 0
3 years ago
Read 2 more answers
A small car and a large heavier bus are traveling at the same speed. Which has more momentum?
lions [1.4K]

Answer:

small car since they weigh less than a bus

Explanation:

7 0
2 years ago
A physical quantity is defined as mass per uint volume .what is its si unit.​
Artist 52 [7]
A physical quantity is defined as mass per uint volume .what is its si unit.


A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit. A physical quantity possesses at least two characteristics in common, one is numerical magnitude and other is the unit in which it is measured.
8 0
2 years ago
Which most likely appear in the central nervous system only?
zalisa [80]

Answer:  Only neurons will appear in the nervous system

9 0
2 years ago
Read 2 more answers
Other questions:
  • A coin dropped from the top of a precipice (cliff) takes 2.42 to hit the ground. How highis the precipice (cliff)? .
    9·1 answer
  • What carved the sharp features of this mountain
    9·2 answers
  • Thr frequency of a wave traveling throught the air of a hot, dry desert is 1,200 hertz. Its wavelength is 0.300 meters. What is
    13·1 answer
  • Two protons are 0.00500 m apart. Find the force between them.
    8·1 answer
  • 6. In the reaction C+02 → C02, 18 g of carbon react with oxygen to produce 72 g of carbon
    11·1 answer
  • Which statement correctly describes protons? They have no charge and are present in the nucleus of an atom. They have a negative
    7·2 answers
  • Three forces act on a particle that moves with a constant velocity. Two of these forces are: F1 = 2.0i + 4.0j - 2.0k and F2 = -8
    5·1 answer
  • True or false, question in picture,
    10·2 answers
  • Please Help lol. <br> just trying to get up the character count lol
    13·1 answer
  • If the average density of the Universe is small compared with the critical density, the expansion of the Universe described by H
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!