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Akimi4 [234]
4 years ago
14

Describe at least two ways that you can reduce the friction between two solid surfaces

Physics
1 answer:
Firlakuza [10]4 years ago
8 0
I will try to name as much as I can :

• Magnets
• Butter
• Petroleum
• Using a spherical object leaves the surface with very little surface area, basically using balls will help alot
• Using a hockey table leaves you with not friction at all when on
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An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity
Reil [10]

Answer:

b

Explanation:

When an object is in circular motion, the direction of velocity is in the direction of tangent to the circle and acceleration is always directed towards the radial direction. This means that velocity is always perpendicular to acceleration of the object.

Hence option  (b)-The velocity and acceleration vectors are perpendicular is correct.

3 0
3 years ago
Hiii please help i’ll give brainliest if you give a correct answer please thanks!
ryzh [129]

Answer:

i Guess 1 or 3

Explanation:

yea 1 or 3 or just  guess hard

7 0
3 years ago
Which of the following is not dimensionally correct?<br> E=mc2 B. vf=vi+at<br> S=vt2 D. S=1/2 at2
Elodia [21]

Answer:

s=vt2 just simplify all into metric units first

5 0
3 years ago
Please help me I will give you 20 points !!
nadezda [96]

Answer:

D. The primary source, because it was written by the researcher

Explanation:

One should learn to trust the primary source more because it is the real work of the researcher.

A primary work defines the work of research from his or her experimental findings.

  • The primary source presents experimental data and other subordinates ones to reach a conclusion as seen from the view of the researcher.
  • A secondary source implies someone else documenting their own opinion about the primary experimental set up.
  • This can get dicey in the sense that results can be twisted to serve other ulterior motives.

8 0
3 years ago
(a) Calculate the tension in a vertical strand of spiderweb if a spider of mass 5.00 ✕ 10-5 kg hangs motionless on it.
sertanlavr [38]

a)The tension in the vertical strand will be 0.00049 N.

b))The tension in the horizontal strand will be 0.001284 N.

c)The ratio of tension in the horizontal strand to the tension in the vertical strand will be  2.62.

<h3>What is tension force?</h3>

The tension force is described as the force transferred through a rope, string, or wire as it is pulled by opposing forces.

Given data;

Mass of spiderweb = 5.00 ✕ 10⁻⁵ kg

The tension in a horizontal strand of a spiderweb, Tₓ

The tension in a  vertical strand of a spiderweb, Tₐ

The angle at which the strand sags, Θ = 10.0°

R is the ratio of  tension in the horizontal strand to the tension in the vertical strand

a)

From the FBD,

The tension  in the vertical strand is equal to the weight of the spider;

Tₐ = W

Tₐ = mg

Tₐ= 5 x 10⁻⁵ kg x 9.8 m / s²

Tₐ= 0.00049 N.

(b)

The super's total vertical forces are zero since it is not moving the value of the tension in the horizontal strand;

Tₓ = mg/( 2sinΘ)

Tₓ = 5 x 10⁻⁵ kg x 9.8 m /s² / ( 2 sin 11° )

Tₓ= 0.001284 N.

c)

R is the tension in the vertical strand divided by the tension in the horizontal strand.

R= Tₐ / Tₓ

R= 0.001284 N / 0.00049 N

R= 2.62

Hence, the tension in a vertical strand of a spiderweb, the tension in a horizontal strand of a spiderweb, and the ratio of tension in the horizontal strand to the tension in the vertical strand will be 0.00049 N, 0.001284 N, and 2.62 respectively.

To learn more about the tension force refer to the link;

brainly.com/question/2287912

#SPJ1

6 0
2 years ago
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