An object has three forces acting upon it, the first force is 58.2 N to the right and the second force is 14.0 N to the left. What is the magnitude of the third force, such that the object travels at a constant velocity? Answer in units of N and be sure to include all necessary work, as well as a free body diagram.

Help Please!

Answer:

??

Explanation:

Answer:

16 cm

Explanation:

Magnification (M)= v/u

where V = image distance from lens

u = object distance from lens

Given that the object is 5 cm away from the lens

The magnification of the lens is 3.2

image distance from lens (v) = magnification * object distance = 3.2 * 5 =16cm

Answer:

Please mark as Brainliest!!

Explanation:

He will not succeed as it blows the trumpet harder that only increase the amplitude of the sound wave that means the intensity of the sound will increase but the frequency remains the same.

Answer:

he wont

Explanation:

Answer:

48.732

Explanation:

Just move the denominator 3 times for the 0s in 1000.

Answer:

dsfghrtykuyjfcjuktj,ilyk

Explanation:

jgbnm,g bcm

Answer:

D.1.4 hours

Explanation:

[tex]d\ =\ vt[/tex]

[tex]t\ =\ \frac{d}{v}[/tex]

[tex]t\ =\ \frac{100}{70}[/tex]

[tex]t\ =\ 1.42857142857[/tex]

Therefore, the answer is D 1.4 hours

Answer:

1:4

Explanation:

The formula for calculating the maximum height of the ball is expressed as;

H = u²sin²theta/2g

If a ball is thrown vertically upward with a speed v, its maximum height is expressed as;

H = v²sin²90/2g

Since sin90 = 1

H = v²/2g.... 1

If an identical second ball is thrown upward with a speed of 1/2 v, then the maximum height will be expressed as;

H1 = (1/2v)²sin²90/2g

H1 = (v²/4)(1)/2g

H1 = v²/8g ...... 2

Divide both equations

H/H1 = (v²/2g)/(v²/8g)

H/H1 = v²/2g × 8g/v²

H/H1 = 8g/2g

H/H1 = 4

Reciprocate both sides

H1/H = 1/4

H1:H = 1:4

Hence the ratio of the maximum height of the second ball to that of the first ball is 1:4

Answer:

i cant explain well but the answer is letter b

x-5

Explanation:

dont report me or i will report you too

Answer:

x-5 is the answer

Explanation:

pick her as the brainliest

Answer: It represents the whole distance traveled. Hope this helps!

Explanation:

Answer:

conduction.

Explanation:

Hoped I helped! Im Eve btw have a great day and consider marking this brainliest if you do thank you in advanced!

Answer:

D

Explanation:

Answer:

300m

Explanation:

step one

given data

initial speed u= 15m/s

final speed v= 45m/s

time taken to attain final speed= 10seconds

Step two:

Let us first solve for the acceleration

a= Δv/t

a= 45-15/10

a=30/10

a= 3m/s

applying the equation of motion

[tex]v^2=u^2+2as[/tex]

substituting our given data

[tex]45^2+15^2+2*3*s\\\\2025=225+6s\\\\[/tex]

collect like terms

2025-225=6s

1800=6s

divide both sides by 6

s=1800/6

s=300m

Complete Question

An unknown material, m1 = 0.41 kg, at a temperature of T1 = 86 degrees C is added to a Dewer (an insulated container) which contains m2 = 1.7 kg of water at T2 = 22 degrees C. Water has a specific heat of cw = 4186 J/(kg⋅K). After the system comes to equilibrium the final temperature is T = 30.3 degrees C.

Part (a) Input an expression for the specific heat of the unknown material.

Part (b) What is the specific heat in J/(kg⋅K)?

Answer:

a

    [tex]c = \frac{m_2 * c_w (T - T_2)}{m_1 * (T_1 - T) }[/tex]

b

  [tex]c = 2587.14 \ J /(kg \cdot K)[/tex]

Explanation:

From the question we are told that

    The mass of the material is  [tex]m_1 = 0.41 \ kg[/tex]

     The temperature is  [tex]T_1 = 86 ^oC[/tex]

      The mass of water is  [tex]m_2 = 1.7 \ kg[/tex]

      The temperature of water is  [tex]T_2 = 22^oC[/tex]

      The specific heat of water is  [tex]c_w = 4186 \ J/(kg\cdot K)[/tex]

       The temperature of the system is  [tex]T= 30 .3^o C[/tex]

Generally heat lost by the unknown material =  heat gained by water

Generally the heat gained by water is mathematically represented as  

        [tex]Q_2= m_2 * c_w (T - T_2)[/tex]

=>      [tex]Q_2= 1.7 * 4186 (30.3 - 22)[/tex]

=>      [tex]Q_2= 59064.46 \ J[/tex]

Generally the heat lost by the unknown material  is mathematically represented as        

        [tex]Q_1= m_1 * c* (T_1 - T)[/tex]

        [tex]m_2 * c_w (T - T_2) = m_1 * c* (T_1 - T)[/tex]

=>       [tex]c = \frac{m_2 * c_w (T - T_2)}{m_1 * (T_1 - T) }[/tex]

Here  c is the specific heat capacity of the unknown material

=>      [tex]Q_1= 0.41 * c (86 - 30.3)[/tex]

=>      [tex]Q_1= 22.83 c[/tex]        

So

           [tex]59064.46 = 22.83 c[/tex]

=>         [tex]c = \frac{59064.46 }{ 22.83}[/tex]

=>         [tex]c = 2587.14 \ J /(kg \cdot K)[/tex]

Answer:

?????????????????????????

[tex]\huge\fcolorbox{black}{pink}{Answer}[/tex]

Because said machines have to operate in the physical world with constraints caused by the laws of physics. It’s not possible to do useful work without encountering some of these issues. The mains ones are:

[tex]\sf\blue{hope\:it\:helps}[/tex]

Answer:

Gravitational force

Explanation:

Gravitational force is what is making the feather go down. It's pushing the feather down, without the Gravitational force, the feather would have been going up, and not down. Just like us. Gravitational force is what keeps us humans from floating ( unless ur an alien jklol), So yeah Gravitational force is the force that acts upon the feather to fall towards the ground at a constant speed.

Btw, u never listed the forces here just ....

Hope this helped!

A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

When body is falling the net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity  

A feather is falling towards the ground at a constant speed. Forces act upon the feather is gravitational force.

To learn more about force refer to the link:

brainly.com/question/13191643

#SPJ2

Answer:

Explanation:

In a battery charger (for an auto).

As a replacement for any bulb in an auto.

As a lamp in an emergency exit where the power must be shut off.

As a light that illuminates the back of a truck, turned on when loading the truck.

Answer:

The bowling ball has greater kinetic energy.

Explanation:

Kinetic energy is given by:

[tex] K = \frac{1}{2}mv^{2} [/tex]

Where:

m: is the mass

v: is the speed

For the bowling ball we have:

[tex]K = \frac{1}{2}mv^{2} = \frac{1}{2}5 kg*(6 m/s)^{2} = 90 J[/tex]

And for the ship:

[tex]K = \frac{1}{2}mv^{2} = \frac{1}{2}120000 kg*(0.02 m/s)^{2} = 24 J[/tex]

Therefore, the bowling ball has greater kinetic energy.

I hope it helps you!

Answer:

B

Explanation:

In a collision some of the kinetic energy of the object convert into thermal energy and sound. It's not so easy to measure thermal and sound energy. That's why it's difficult to use law of conservation of energy.

Alert: Energy is always conserved.

Answer:

The expansion of the steel bridge is 0.0605 cm

Explanation:

The given length of the steel bridge, L = 5.5 m

The linear expansivity of the steel bridge, [tex]\alpha_ L[/tex] = 0.000011/°C

The rise (change) in the temperature, ΔT = 10°C

Let, ΔL, represent the expansion of the steel bridge

Given that the linear expansivity, [tex]\alpha_ L[/tex], of a material is the change in the length of a material per unit length of the material per unit change in the temperature, we have;

[tex]\alpha_ L[/tex] = ΔL/(L × ΔT)

∴ ΔL = [tex]\alpha_ L[/tex] × L × ΔT = 0.000011 /°C × 5.5 m × 10 °C = 0.000605 meters

ΔL = 0.000605 meters

The expansion of the steel bridge, ΔL = 0.000605 meters = 0.000605 m × 100 cm/m = 0.0605 cm

Answer:

Resistance, resistivity and drift velocity varies with relaxation time which is dependent on temperature.

Number of free electrons in a conductor remains invariant even if its temperature changes.Hence correct option is option D.

Answer:

right answer is number C that is 3.8J since KE=1/2mv²

Answer:

A

Explanation:

paddling a canoe to make the boat move

Answer:

I think it is 10 Hz

Explanation:

Sorry if it's wrong

Answer:

The mass is 22 kilograms

Explanation:

[tex]F=ma[/tex]

[tex]88N = m(4m/s/s)[/tex]

[tex]m=\frac{88N}{4m/s^{2} }[/tex]

[tex]m=22kg[/tex]

Answer:

B.she cannot use it because the credit card is not collareral

Explanation:

sorry if am wrong