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
AlladinOne [14]
3 years ago
7

What is the correct answer?

Physics
1 answer:
Anna35 [415]3 years ago
8 0

Answer:3

Explanation:

You might be interested in
A hockey puck is sliding across a frozen pond with an initial speed of 9.5 m/s. It comes to rest after sliding a distance of 37.
Bond [772]

Answer:

<h3>The coefficient of kinetic friction between the puck and the ice is \mu _{k} = 0.12</h3>

Explanation:

Given :

Initial speed  v_{o} = 9.5 \frac{m}{s}

Displacement x = 37.4 m

From the kinematics equation,

  v^{2} - v^{2} _{o}  = 2ax

Where v^{2}   = final velocity, in our example it is zero (v =0), a = acceleration.

   a =- \frac{90.25}{ 2 \times 37.4}

   a =- 1.21 \frac{m}{s^{2} }

From the formula of friction,

  F =- \mu _{k } N

Minus sign represent friction is oppose the motion

Where N = mg ( normal reaction force )

 ma = -\mu _{k}  m g                                                  ( ∵ g = 9.8 \frac{m}{s^{2} } )

So coefficient of friction,

 \mu_{k} = \frac{1.21}{9.8}

 \mu_{k} = 0.12

Therefore, the coefficient of kinetic friction between the puck and the ice is  \mu _{k} = 0.12 .

4 0
3 years ago
If heat is gained from a source, it is __________ from the source.
Strike441 [17]

Answer:

Derived, or expended

4 0
3 years ago
There is an electric field in the region between the two plates. The magnitude of this electric field is ed. This imposes anothe
krok68 [10]

Answer:

it is essential that the charge on the plates are of the same magnitude, but in the opposite direction

Explanation:

The configuration of parallel plates is called a capacitor and is widely used to create constant electric fields inside.

 To obtain this field it is essential that the charge on the plates are of the same magnitude, but in the opposite direction

This is so that the fields created by each plate can be added inside and subtracted from the outside of the plates

5 0
3 years ago
Hello please help i’ll give brainliest
ser-zykov [4K]

The correct answer is B.Antartica and Australia were one landmass millions of years ago.

5 0
3 years ago
Which of these BEST describes the concept of the rock cycle?
choli [55]
D  rocks are continually changing and type of rock mat be transformed into another type of appropriate process.

8 0
3 years ago
Other questions:
  • Can we use copper wire instead of eureka wire
    8·1 answer
  • Superman lived on another planet where the acceleration due to gravity is 23.6 m/s2 . If a woman falls from a building that is 8
    14·1 answer
  • How many grams of nitrogen gas are needed to produce 34 g of ammonia
    9·1 answer
  • How do you study physics?
    6·2 answers
  • Air pollution is a negative effect of using this renewable resource to generate power.
    7·2 answers
  • Two cello strings, with the same tension and length, are played simultaneously. Their fundamental frequencies produce audible be
    6·1 answer
  • Ssooeorkgogogoogkrorooror
    6·1 answer
  • 28. A student notices that when a weight is hung on a spring, the spring stretches. She decides to conduct an experiment to dete
    6·1 answer
  • A wave pulse travels along a stretched string at a speed of 100 cm/s. What will be the speed in cm/s if the string's tension is
    7·1 answer
  • Line segment Q R , Line segment R S and Line segment S Q are midsegments of Î"WXY. Triangle R Q S is inside triangle X Y W. Poin
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!