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
mestny [16]
3 years ago
8

3. Write any two types of force.​

Physics
1 answer:
Lerok [7]3 years ago
8 0

Answer:

An <u>applied force</u> is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.

A <u>friction force</u> is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object. For example, if a book slides across the surface of a desk, then the desk exerts a friction force in the opposite direction of its motion. Friction results from the two surfaces being pressed together closely, causing intermolecular attractive forces between molecules of different surfaces. As such, friction depends upon the nature of the two surfaces and upon the degree to which they are pressed together. The maximum amount of friction force that a surface can exert upon an object can be calculated using the formula below:

F_{frict} = µ • F_{norm}

You might be interested in
Boats use echo sounders. Pulses of sound waves are reflected by the sea bed and
Sati [7]

Answer: depth = 3.75 m

Explanation:

Taken the speed of the sound in sea to be V = 1500 m/s

The time between an echo sounder sending and receiving a pulse is 0.005 s. That is,

Total time T = 0.005

Formula for echo is:

V = 2X/T

Where X = distance covered

Substitute V and T into the formula

1500 = 2X/0.005

Cross multiply

7.5 = 2X

Make X the subject of formula

X = 7.5/2

X = 3.75 m

Therefore, the depth of the sea is 3.75 m

4 0
3 years ago
Most photographs will be made using a shutter speed of 1/60 or faster.
kari74 [83]
True

Most photographs will be made using a shutter speed of 1/60 or faster.
5 0
3 years ago
Read 2 more answers
Two bar magnets are labeled A and B. The ends of each magnet are numbered 1 or 2, but the poles are not labeled. When A1 is brou
olga2289 [7]

The conclusion that is best supported by the data is;

D) A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

3 0
3 years ago
Read 2 more answers
Is the maximum displacement of a point on a vibrating body or wave.
Georgia [21]
The correct answer is amplitude
7 0
3 years ago
What three sources does the human body use to provide energy for moderate physical activities​
Mazyrski [523]

Answer:

Carbohydrate, Fat and Protein

Explanation:

3 0
3 years ago
Other questions:
  • What word can I use instead of saying "each time"
    7·1 answer
  • Which of the following phrases best describes the term "magnetic flux"?
    11·1 answer
  • Visible light travels at a speed 3.0 × 108 of m/s. If red light has a wavelength of 6.5 × 10–7 m, what the frequency of this lig
    11·2 answers
  • A spring-loaded pellet gun is designed to fi re 3.00-g projectiles horizontally at a speed of 45.0 m/s. (a) If the spring is com
    5·1 answer
  • What is the temperature used for the extension step?
    12·1 answer
  • What is the key point from the kennedy-nixon debate​
    5·1 answer
  • Which of the following is a mixture?
    13·1 answer
  • Two metal bricks are held off the edge of a balcony from the same height above the ground. The bricks are the same size but one
    10·1 answer
  • Easy Guided Online Tutorial A special electronic sensor is embedded in the seat of a car that takes riders around a circular loo
    6·1 answer
  • A car is stopped at a red light. When the light turns green, it accelerates up
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!