How do bearings help reduce friction?​

Answers

Answer 1
bearings reduce friction by means of rolling motion (reduces friction more than the « plain bearing »). sliding motion allows a greater decrease in the amount of energy consumption during rotation.
Answer 2

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Bearings are constrained elements used to reduce the friction of certain moving parts in a machine or device. This is done by replacing sliding friction with rolling friction. Bearings are used to provide better linear motion or rotation around a fixed axis.Roller bearings are typically cylinders similar to free rollers, except that they are constrained in their motion. Ball bearings are spheres that are held in a track.

Related Questions

An electrostatic force of 9.0 N ??

Answers

Answer:-

[tex]\longrightarrow \sf D) 9.0 \times 10^6 N/C [/tex]

Solution:-

Given -

force,F = 9.0 NCharge,q = +1.0[tex]\mu[/tex]

Force,F on any charge q in electric field,E is given by -

[tex]\green{ \underline { \boxed{ \sf{F = qE}}}}[/tex]

[tex]\therefore \sf E = \dfrac{F}{q} [/tex]

Putting Values -

[tex]\begin{gathered}\\\implies\quad \sf \dfrac{9}{1 \times 10^{-6}} \quad(1\mu = 10^{-6}) \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf 9 \times 10^{6} N/C \\\end{gathered} [/tex]

The answer is D.9.0x106 N/C








Explanation: it’s just d

A boy pushes a 54kg cart with a force of 81N. What is the cart's acceleration?

Answers

Explanation:

maturity also get disorganised

Electroconvulsive therapy has been most successful in the treatment of:.

Answers

Given what we know, we can confirm that electroconvulsive therapy has been most successful in the treatment of major depression.

What is Electroconvulsive therapy?

This is a relatively new procedure. It involves the intentional triggering of brief seizures in the brain. This is done while the patient is under the effects of anesthesia and is therefore painless. These seizures cause a dynamic shift in the brain chemistry of the patients, leading to greatly reduced symptoms in over 80% of patients.

Therefore, we can confirm that electroconvulsive therapy has been most successful in the treatment of major depression.

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Billy pushes a supermarket cart with a constant force F. Every time he adds groceries to the cart, the weight of the cart increases. Billy adds groceries until the cart is filled. How do the groceries affect the carts acceleration if the force billy used to push the filled cart is the same force he used to push the empty cart?

Answers

Answer:

The groceries will decrease the cart's acceleration.

Explanation:

more force is required to push the full cart than the empty cart.

someone please answer this, ill give you brainliest and your earning 50 points.

Answers

All of the following are non-renewable resources except

O natural gas

O oil

O minerals

O water ✓

Water is a renewable source because evaporation and condensation takes place everytime on our planet

Answer:

water

Explanation:

There are two types of resources

RenewableNon renewable

The resources which cant be created back again are called nonrenewable.

The resources which can be created back are called renewable

At what point is the speed at a maximum? .
A. Just before the skater reaches the very bottom
B. At the exact bottom
C. A little bit after reaching the bottom

Answers

Answer:

B. At the exact bottom

Explanation:

This is because his acceleration is at its max, which means his speed is at a max. HOPE THIS HELPS!

Answer:

B, At the exact bottom

Explanation:

i got it right

Friends I need the answer for this ?

Answers

Answer:

[tex]\small\color{aqua}\tt{{a}}[/tex]

hope it's help

A capacitor has a capacitance of 0. 40 µF at a voltage of 9. 0 V. What is the charge on each plate of the capacitor? µC.

Answers

The capacitor is a device that can store electrical energy. It is a two-conductor configuration. The charge on each plate of the capacitor will be 3.6 µC.

What is a capacitor?

A capacitor is a device that can store electrical energy. It is a two-conductor configuration separated by an insulating medium that carries charges of equal size and opposite sign.

An electric insulator or vacuum, such as glass, paper, air, or a semi-conductor termed a dielectric, can be used as the non-conductive zone.

The given data in the problem is;

C is the capicitence of capicitor= 0. 40 µF

V is the  voltage = 9. 0 V

Q is a charge on each plate of the capacitor=?µC.

The formula for the capacitor is given as;

[tex]\rm Q=CV \\\\ \rm Q=0. 40 \times 9. 0 \\\\ \rm Q=3.6 \ \mu C.[/tex]

Hence the charge on each plate of the capacitor will be 3.6 µC.

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Answer:

3.6

Explanation:

On a warm summer day when the relative humidity is high, it may seem even warmer than the actual temperature. Why do we feel so uncomfortable on these muggy days?

Answers

Evaporation, our bodies produce sweat which regulates our body temperature, however that only works if the sweat evaporates. Which doesn’t happen or at least as much on high humidity days which is the reasons we feel muggy and uncomfortable.

Answer:

Condensing

Explanation:

Water density in the air is too high for condensation to occur and so you feel warm, sweaty, and sticky due to the added moisture on your body.

Yellow light (600 nm) passes

through a diffraction grating. Its first

order (m = 1) maximum occurs at

an angle of 21. 2°. What is the slit

separation d?

[?] x 10-6 m

HELP PLSS!!!

Answers

This question involves the concept of the grating equation.

The slit separation is "1.66 x 10⁻⁶ m".

Grating Equation

The grating equation is used to derive a relationship between the wavelength of the light falling on the grating and the slit separation for a given order and angle of diffraction. Mathematically, the grating equation is written as follows:

[tex]m\lambda = dSin\theta\\\\d=\frac{m\lambda}{Sin\theta}[/tex]

where,

d = slit separation = ?m = order = 1λ = wavelength of the yellow light = 600 nm = 6 x 10⁻⁷ mθ = angle of diffraction = 21.2°

Therefore, using the given values in the formula, we get:

[tex]d=\frac{(1)(6\ x\ 10^{-7}\ m)}{Sin(21.2^o)}\\\\[/tex]

d = 1.66 x 10⁻⁶ m

Learn more about the grating equation here:

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Answer:

1.66

Explanation:

someone please answer this, ill give you brainliest and your getting 100 points.

Answers

Answer:

Option B is correct

Explanation:

A is denoted to lithosphere followed by B -asthenosphere .

Which is covered by lava of E(Mantal section)

What is the heat source for convection currents in layer E?

O A

O B✓

When a volcano (present on lithosphere) erruputs, the molten material which goes down (Asthenosphere) ,results in the heating effects in the mantle .

O C

O D

6. What is the GPE of a 500g box of chocolates 2 m above the ground?

Answers

GPE = mgh
m = mass=500g = 0.5kg
h= height = 2m
g = gravitational field strength, 9.8 near surface of earth
therefore GPE = 0.5*9.8*2 ( 0.5*2=1 so they cancel out), GPE = 9.8J

What is the change in the momentum of a 1,600 kg car if its velocity goes
from 20 m/s to 0 m/s?

Answers

Answer:

1) 22,240kg m/s

2) 9.26

Explanation:

1) Mass × Velocity

2) 22,240 ÷ 2400

4. Which of the following is NOT a running/jogging drill?
A. Rope climb
B. Wind Sprints
C. Zigzag drill
D. Agility latter drill

5. A zigzag drill is done by alternately stepping one foot in front of and behind the other foot.
True or False

6. Select the correct answer.
Speed and agility work together for athletes to have an advantage over the opponents in only a few sports.
True or False

Answers

Answer:

4. A. rope climb

5. True

6. True

Explanation:

hope it's help

what do we need to know in order to make motion safe for all?

Answers

Answer:

motion changes with time of the position or orientation of a body. Motion that changes the orientation of a body is called rotation.

Explanation:

A 26.5 kg crate is pushed with a force of 1,893 N, moving the crate a distance of 13.0 m. 579 W of power was used. For how much time was the force applied

Answers

Explanation:

[tex]t = \frac{f \times d}{p} [/tex]

t = ?

f = 1893N

d = 13m

P = 579W

t = { 1893×13}/(579)

t = 42.5secs

How is thermal equilibrium reached? Question 3 options: When both objects have the same temperature When objects have the same mass When objects are both in the same state of matter (solid, liquid, or gas) When objects have different temperatures.

Answers

In the thermal equilibrium, the change in temperature is said to be zero in between the bodies. Thermal equilibrium is reached when both objects have the same temperature.

What is thermal equilibrium?

Thermal equilibrium is easily explained by the zeroth law of thermodynamics. If any two-body is at thermal equilibrium there is no change in the temperature of the body.

According to zeroth law if body A is in thermal equilibrium with body B and body B is in thermal equilibrium with C . So body A and C are also in thermal equilibrium.

In the thermal equilibrium, the net heat transfer is said to be zero in between the bodies.

Hence option A IS RIGHT. Thermal equilibrium is reached when both objects have the same temperature

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witch two conditions would result in the weakness electric force between objects

Answers

Answer: the greater the electric force.  distance between the charges.

Explanation:

The greater the charge, the greater the electric force. The second factor is the distance between the charges.

What is the mass of an object if a force of 48 Newtons produces an acceleration of 6 m/s2?

Answers

Answer:

m = 8 kg

Explanation:

According to Newton's second law of motion, F = ma.

Solving for m using algebra:

m = F ÷ a

m = 48 N ÷ 6 m/s² = 8 kg

A tennis ball has 10 J of energy when it is 1 m above the floor.

Name the store associated with this
energy.

Answers

The store associated with the energy when a ball has 10 J of energy when it is 1 m above the floor is gravitational potential energy

What is gravitational potential energy?

Gravitational potential energy is the energy of a body by virtue of its position in the gravitational field.

From the question, If a tennis ball has 10 J of energy when it is 1 m above the floor, first, a work of 10 J was done against gravity to lift the tennis from the floor to a height of 1 m. At the height of 1 m, the work of 10 J is converted to the gravitational potential energy of the tennis ball which is stored in the ball.

Hence, The energy associated when a tennis ball has 10 J of energy and it is 1 m above the floor is gravitational potential energy.

Learn more about gravitational potential energy here:  https://brainly.com/question/15896499

4.
Sound waves and ultraviolet light waves both share the property of being able
a. Move through empty space
c. Carry energy
b. Travel at 300,000 m/s
d. Proprogate through rock

Answers

Carry energy

- - - - - - - - - - - - - - - - - - - - - - -

Hope this helped :)

~pinetree

What is the solubility of NaCI at 20 degrees?

Answers

Answer:

The solubility of sodium chloride in water is 36.0 g per 100 g water at 20°C. The temperature must be specified because solubility varies with temperature. Or 36.0 g per 100 g

Explanation:

Dr. Cronbach wants to be sure that his assessment of neuroticism measures the same way each time he uses it. Which aspect of assessment is Dr. Cronbach primarily concerned with?

Answers

The aspect of assessment that Dr. Cronbach is primarily concerned with is the internal consistency.

Reliability assessment

A reliability assessment is a tool that is used to evaluate the consistent performance of an individual or an instrument.

When this assessment is carried out in such a way that the instrument gives the same result each time it is used, the internal consistency is being considered.

Therefore, the aspect of assessment that Dr. Cronbach is primarily concerned with is the internal consistency.

Learn more about reliability assessment here:

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[tex]\huge\pink{\boxed{{\colorbox{black}{PLS HELP}}}}[/tex]

Suppose that 100 g of metal gained 110 cal of heat when the temperature is increased form 60°C to 70°C. What is the specific heat of metal?​

Answers

q=mcΔt

110=100.c.(70-60)

c=0.11

Answer:

110 cal kg⁻¹°C⁻¹

Explanation:

Formula to find the specific heat capacity is :

Q = m c Θ

Here,

Q = heat energy

m = mass

c = specific heat capacity

Θ = change in temperature

Now let us find the specific heat capacity now.

Q = m c Θ

110cal = 1kg × c × (70 - 60 ) °C

110cal= 0.1kg × c × 10°C

110 =  1 c

Divide both sides by 1.

c = 110 cal kg⁻¹°C⁻¹

PLEASE HELP ME WITH THIS ONE QUESTION

An engine is 34% efficient. What ratio of work to heat input is possible?

Answers

Answer:

it would be 19/56 i believe !

Explanation:

Answered it correct on a test :)

If we add 50 Joules of thermal energy to a heat engine, and that heat engine does 30 Joules of work, how much thermal energy is left over?

20 Joules

10

None

All of it

Answers

Answer:

The correct answer should be

A. 20 Joules

Explanation:

I'm taking the K12 Unit Test: Energy - Part 1 right now

A star is moving away from an observer. Toward which end of the spectrum does its visible light shift?.

Answers

Answer:

Redshift, or lower power

Explanation:

doppler effect

waves get stretched when you are moving away from something, and squished when you are moving towards it. Imagine you have a long, bent wire. if you stretch out the wire, the wavelength becomes longer. This also applies to sound.

6) If Bam was hit by the hand with a force of 1200N. If he has a mass of 81kg, what acceleration did
Bam feel?

Answers

Answer:

14.81 m/s^2

Explanation:

f=m×a

1200=81×a

a=1200/81

a=14.81

If two objects of the different masses are pushed with the same force; which will travel faster?

Answers

The smaller mass would travel faster.

Using the formula force = mass*acceleration, you can plug in different variables to test out which mass has a greater acceleration:

F=ma

Small mass: m1=1 kg
Large mass: m2=2 kg
Force: F=3 N

Acceleration for small mass:
3=1a
a=3 m/s^2

Acceleration for large mass :
3=2a
a=1.5 3m/s^2

Since the large mass has a lesser acceleration, the small mass (with a greater acceleration) would travel faster.

Four spheres with positive and negative charges hang from strings.

Which illustration correctly shows how the spheres will behave?

A

B

C

D

Answers

The charges may be positive or negative. However, the behavior of the charges depend on the position of like charges and unlike charges.

What is a charge?

An electrical charge may be positive or negative. We must recall that a charge may attract or repel another charge. According to the first law of electrostatics, like charges repel while unlike charges attract.

The image is not shown here however, the behavior of the charges depend on the position of like charges and unlike charges.

Learn more about charges:https://brainly.com/question/2697602

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