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
QveST [7]
3 years ago
9

Methods to reduce the frictional force between the an object and surface which it is in contact.

Physics
1 answer:
telo118 [61]3 years ago
7 0
Use of lubricant
Use of ball bearers
Use of streamlined body
Use of graphite
You might be interested in
What type of system uses a liquid to transmit a force
tankabanditka [31]
It can be transmit in hydraulic machine, exerting a small cross-sectional area can lead to pressure being transmitted
3 0
3 years ago
A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 118 km
ruslelena [56]

Answer:

x component 60.85 m

y component 101.031 m

Explanation:

We have given distance r = 118 km

Angle which makes from ground = 58.9°

(a) X component of distance  is given by r_x=rcos\Theta =118\times cos58.9=118\times 0.5165=118=60.85m

(b) Y component of distance is given by r_Y=rcos\Theta =118\times sin58.9=118\times 0.8562=101.0316m

These are the x and y component of position vector

6 0
3 years ago
To understand the distinction between mass and weight and to be able to calculate the weight of an object from its mass and Newt
Firdavs [7]

Answer: A.E.

Explanation: To understand the distinction between mass and weight and to be able to calculate the weight of an object from its mass and Newton's law of gravitation. The concepts of mass and weight are often confused. In fact, in everyday conversations, the word "weight" often replaces "mass," as in "My weight is seventy-five kilograms"

6 0
3 years ago
Read 2 more answers
Joe runs 10 m north, 20 m south, 9m south, and then 15 m north. What is Joe's<br> displacement?
tresset_1 [31]

Answer:

Joes displacement is 54m

4 0
1 year ago
Estimate how long the sun would last if it were merely a huge fire that was releasing chemical energy. Assume that the sun begin
stepan [7]

Answer:

≅ 17000 years or 1.7 x 10⁴ years

Explanation:

time= total energy/power

=  (10⁸J/kg)(2x10³⁰ kg) / 3.8 x 10²⁶ J/s

 = 526,315,789,473 s

=  16689 years

≅ 17000 years or 1.7 x 10⁴ years

7 0
2 years ago
Other questions:
  • Give a physical description of radio waves and compare and contrast it with the frequency, wavelength, energy and wave speed wit
    6·1 answer
  • A circular wire loop has a radius of 7.50 cm. a sinusoidal electromagnetic plane wave traveling in air passes throughthe loop, w
    7·2 answers
  • The wave speed of sound waves traveling through four different media was measured at a constant temperature. Results are summari
    12·1 answer
  • The height of a cone is increasing at a rate of 10 cm/sec and its radius is decreasing so that its volume remains constant. How
    5·1 answer
  • What is the main structure of lymphatic system?
    10·2 answers
  • In an inertia balance, a body supported against gravity executes simple harmonic oscillations in a horizontal plane under the ac
    12·1 answer
  • Which statement explains how it is possible to carry books to school without changing the kinetic or potential energy of the boo
    12·1 answer
  • What can you infer from the fact that metals are good conductors of electricity?
    12·2 answers
  • Hii please help i’ll give brainliest if you give a correct answer please
    14·1 answer
  • In which type of circuit does charge move in only one direction?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!