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
zalisa [80]
3 years ago
4

Any external force that acts against movement is called __________. A. Gravity B. Efficiency C. Resistance D. Momentum Please se

lect the best answer from the choices provided. A B C D.
Physics
2 answers:
Nezavi [6.7K]3 years ago
8 0

Resistance is any external force that acts against movement.

RESISTANCE:

  • Resistance is a force that acts in opposition to movement. Hence, it can be said that if movement is resisted, it is opposed.

  • A very good example of resistance is the force of friction, which acts against relative motion or tendency to such motion of two bodies in contact.

  • Therefore, according to this question, any external force that acts against movement is called resistance.

Learn more about resistance at: brainly.com/question/14023824?referrer=searchResults

qaws [65]3 years ago
6 0

Answer:

c

Explanation:

You might be interested in
A car with speed v and an identical car with speed 2v both travel the same circular section of an unbanked road. If the friction
yawa3891 [41]

Answer:

F'=\dfrac{F}{4}

Explanation:

Let m is the mass of both cars. The first car is moving with speed v and the other car is moving with speed 2v. The only force acting on both cars is the centripetal force.

For faster car on the road,

F=\dfrac{mv^2}{r}

v = 2v

F=\dfrac{m(2v)^2}{r}

F=4\dfrac{m(v)^2}{r}..........(1)

For the slower car on the road,

F'=\dfrac{mv^2}{r}............(2)

Equation (1) becomes,

F=4F'

F'=\dfrac{F}{4}

So, the frictional force required to keep the slower car on the road without skidding is one fourth of the faster car.

8 0
4 years ago
A small boat is moving at a velocity of 1.93 m/s when it is accelerated by a river current perpendicular to the initial directio
olasank [31]

Answer:

16.405m/s

Explanation:

Given, initial velocity = u = 1.93m/s, acceleration = a = 0.750m/s2, time = t = 19.3s, final velocity = v= ?

Using the first equation of linear motion,

v = u + at

v = 1.93 + 0.750 x 19.3

v = 1.93 + 14.475

v = 16.405m/s

7 0
3 years ago
Read 2 more answers
A car is a compound machine true or false
Viktor [21]
True is the answer. I believe
6 0
3 years ago
What is the function of eye lens of the human eye<br>​
Artyom0805 [142]

Answer:

Lens of the human Eye is a important and one of that most complex sense organ.

Explanation:

Lens of the human eye it helps that in visualizing light and color perception and objects , glance on the human eye structure and function.

Sense organs are much pretty similar to the camera they  help us see the objects clear.

A human eye is the 2.3 cm in diameter and all filled some fluid, and there are following parts in eye:-  cornea,  Retina , Lens ,Pupil , optic nerves.

cornea :- the cornea is the first transparent part of is called cornea, enters the light through the cornea.

Retina :-it is light sensitive layer that consists of nerve cells,then transmitted to the brain through nerves.

Lens:- behind the pupil there is a transparent structure called lens,it shape focus light on the retina.

Pupil:-it control the value of light that enters the human eye.

Optic nerves is are the two types :- (1) cones (2) Rods .

7 0
3 years ago
Explain the range of effectiveness of each fundamental force by describing the distance that each force influence nearby matter
Bas_tet [7]

Answer:

Actually, gravity is the weakest of the four fundamental forces. Ordered from strongest to weakest, the forces are 1) the strong nuclear force, 2) the electromagnetic force, 3) the weak nuclear force, and 4) gravity.

6 0
3 years ago
Other questions:
  • ____________ are atoms with the same number of protons , but differing numbers of neutrons .
    14·1 answer
  • Help with this q? i got the first answer already
    5·1 answer
  • A hot object and a cold object are placed in thermal contact and the combination is isolated. They transfer energy until they re
    5·1 answer
  • Brianna weighs 425 N. She climbs a flight of stairs to a height of 8 m. It takes her 6 seconds.
    6·1 answer
  • What type of star has a low temperture but a high luminosity?
    10·1 answer
  • What factors affect work done? Explain
    14·1 answer
  • A badger is running at a speed of 1 m/s. If the badger moves that was for 2600 seconds, how far will the badger travel?
    12·1 answer
  • If a small child swallowed a safety pin, why
    9·2 answers
  • The charge of a proton is?<br> A. positive (+1)<br> B. negative -<br> C. neutral (zero)
    5·1 answer
  • The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The 2 kg block lie
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!