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
bazaltina [42]
3 years ago
14

Hell Im Fatima berry i need help PLZZ

Physics
1 answer:
irinina [24]3 years ago
7 0

Answer:

static, sliding, rolling, and fluid friction

Explanation:

Static friction acts on objects when they are resting on a surface. For example, if you are hiking in the woods, there is static friction between your shoes and the trail each time you put down your foot

Sliding friction is friction that acts on objects when they are sliding over a surface. For example, you use sliding friction when you write with a pencil. The pencil “lead” slides easily over the paper, but there's just enough friction between the pencil and paper to leave a mark.

Rolling friction is friction that acts on objects when they are rolling over a surface. For example, this explains why most forms of ground transportation use wheels, including bicycles, cars, 4-wheelers, roller skates, scooters, and skateboards.

Fluid friction is friction that acts on objects that are moving through a fluid. For example, the air resistance on a skydiver

You might be interested in
Hey can someone send me the answer to this
bagirrra123 [75]

Cars 'A' and 'C' look like they're moving at the same speed.  If their tracks are parallel, then they're also moving with the same velocity.

5 0
3 years ago
A 2100 g block is pushed by an external force against a spring (with a 22 N/cm spring constant) until the spring is compressed b
Vilka [71]

Answer:

6.5e-4 m

Explanation:

We need to solve this question using law of conservation of energy

Energy at the bottom of the incline= energy at the point where the block will stop

Therefore, Energy at the bottom of the incline consists of the potential energy stored in spring and gravitational potential energy=\frac{1}{2} kx^{2} +PE1

Energy at the point where the block will stop consists of only gravitational potential energy=PE2

Hence from Energy at the bottom of the incline= energy at the point where the block will stop

⇒\frac{1}{2} kx^{2} +PE1=PE2

⇒PE2-PE1=\frac{1}{2} kx^{2}

Also PE2-PE2=mgh

where m is the mass of block

g is acceleration due to gravity=9.8 m/s

h is the difference in height between two positions

⇒mgh=\frac{1}{2} kx^{2}

Given m=2100kg

k=22N/cm=2200N/m

x=11cm=0.11 m

∴2100*9.8*h=\frac{1}{2}*2200*0.11^{2}

⇒20580*h=13.31

⇒h=\frac{13.31}{20580}

⇒h=0.0006467m=6.5e-4

7 0
4 years ago
In which material does the light wave have the larger wavelength?
pochemuha

Answer: in the smaller/ thinner pieces.

8 0
2 years ago
you find a rock in which the grains are arrenged in wavy, parallel bands of white and black crystals. What kind of rock have you
dezoksy [38]
I think your in the wrong section kid. This should be in Earth and Space Science.
7 0
3 years ago
If NEPA charges 5k per kWh, what is the cost of
tiny-mole [99]

Answer:

24k

Explanation:

We multiply by 200V by 24

8 0
3 years ago
Other questions:
  • The liquid electrolyte in the battery typically takes what kind of net charge?
    14·1 answer
  • Which of the following leads to new discoveries and new theories?
    6·2 answers
  • Global Precipitation Measurement (GPM) is a tool scientists use to forecast weather. Which statements describe GPM? Select three
    7·1 answer
  • A 0.35-kgkg cord is stretched between two supports, 7.4 mm apart. When one support is struck by a hammer, a transverse wave trav
    9·1 answer
  • 5
    6·1 answer
  • During a storm, a tree limb breaks off and comes to rest across a barbed wire fence at a point that is not in the middle between
    7·2 answers
  • A bird flies 2km to the south, then 0.2km to the north.What is the displacement of the bird ?
    9·2 answers
  • A 5.50 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the en
    10·1 answer
  • Which element is represented by the atomic model below?
    10·1 answer
  • A loaded wagon of mass 10,000 kg moving with a speed of 15 m/s strikes a stationary wagon of the same mass making a perfect inel
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!