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Answers

Answer 1

Answer:

4

Explanation:

the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.


Related Questions

Help me please!!!!!!!​

Answers

Answer:

A) Plasticine

Explanation:

Palestine doesn't take much strain to harden and its strain rate isn't sensitive, therefore making it perfectly plastic.

Answer:
(A) Plasticine

Explanation:
Plasticine is a perfectly plastic material while the other three are nearly plasticble (quartz is elastic).

Perfectly plastic objects are objects that will not regain their initial shape even after the deforming forces are removed.


Hope it helps ⚜

Two balls at the ends of two strings are moving at the same
speed in horizontal circular paths. One string is three times
as long as the other. Compare the magnitudes of the two
centripetal accelerations.

Answers

Answer:

Fc = M v^2 / R       centripetal acceleration

Fc2 / Fc1 = R1 / R2     since M and v are the same for both

If R2 = 3 R1 then the centripetal acceleration for particle 2 will be 1/3 of that of innermost (R1) particle

a
17. When a 50 cm long wooden log has a radius of 7 cm and a mass of 770g, what is
the density of the wood?

Answers

Answer:

The density is 1.1gcm3

A system in which only one particle can move has the potential energy shown in (figure 1). Suppose u1 = 60 j. What is the y-component of the force on the particle at y = 0. 5 m ?.

Answers

The y-component of the force on the particle at the given position is 120 N.

Electric force on the particle

The electric force on the particle is determined by applying Coulomb's law and work-energy theorem as shown below;

Fd = W

Where;

F is the applied forced is the distanceW is potential

F = W/d

F = 60/0.5

F = 120 N

Thus, the y-component of the force on the particle at the given position is 120 N.

Learn more about electric force here: https://brainly.com/question/20880591

how can the change that the molecular scale affect the Lakes Macro scale appearance

Answers

The molecules of water determines  the macro scale appearance of the lake .

What is a lake?

The term lake is used to describe any large body of water that is surrounded by land. We know that water is composed of molecules and the orientation of molecules affect the macro scale appearance of the water.

Hence, as the molecules of water change their orientation, the macro scale appearance of the lake changes likewise.

Learn more about molecules: https://brainly.com/question/19922822

As a bullet shot vertically upward rises, the kinetic energy of the bullet

Answers

The kenitc energy of the bullet lowers as it keeps going up.

Because gravity is pushing the bullet down as the bullet goes up.

I'm pretty sure that the way to put this answer.

A weight lifter pulls on a 225 kg bar with 1600 N of force, but the bar does not move. How much work
is performed? (show your work)
A. 0 J
B. 7.1 J
C. 1375 J
D. 1825 J

Answers

Answer:

A

Explanation:

its A bro trust me ik it is

Which changes would cause an increase in the resistance of a wire? Check all that apply.

Answers

Answer:

The answer is increasing its temperature to longer and thinner.

The amplitude of the electric field component of an electromagnetic wave is increased from e to 3e. What is the corresponding change in the intensity of the wave?.

Answers

When the amplitude electric field increase from e to 3e, the intensity of the wave will increase by a factor of 9.

Intensity and amplitude electric field

The relationship between intensity and amplitude of an electric field given as;

I ∝ E₀²

[tex]\frac{I_1}{E_1_0^2} = \frac{I_2}{E_2_0^2}\\\\I_2 = \frac{I_1E_2_0^2}{E_1_0^2}[/tex]

where;

I is the intensity of the waveE is the amplitude electric fieldWhen the  amplitude electric field increase from e to 3e

[tex]I_2 = \frac{I_1 \times (3e)^2}{(e)^2} \\\\I_2 = 9I_1[/tex]

Thus, when the amplitude electric field increase from e to 3e, the intensity of the wave will increase by a factor of 9.

Learn more about amplitude electric field here: https://brainly.com/question/13885219

A 750 kg roller coaster car drops from rest at a height of 90 m along a frictionless track. What is velocity of the roller coaster at the top of a second hill that is 60 m high? Show work

Answers

The velocity of the roller coaster at the top of the second hill is 24.25 m/s.


What is velocity?

Velocity is the rate of change of displacement. The s.i unit is m/s

To calculate the velocity of the coaster car, we use the formula below.

Formula:

mg(H-h) = mv²/2............... Equation 1

Where:

m = mass of the coaster carH = Height of droph = Height of the second hillv = velocity of the roller coaster.

From the question,

Given:

m = 750 kgH = 90 mh = 60 mg = constant = 9.8 m/s²

Substitute these values into equation 1

750(9.8)(90-60) = 750(v²)/2

Solve for v

375v² = 220500v² = 220500/375v² = 588v = √588v = 24.25 m/s

Hence, The velocity of the roller coaster at the top of the second hill is 24.25 m/s.

Learn more about velocity here: https://brainly.com/question/24445340

A record spins at 33 rpm (revolutions per minute), which is an angular velocity of about 3.46 radians per second. What is the approximate linear velocity of a fly that sits on the record, 12 cm from the center

Answers

Hi there!

We can use the following equation to relate angular velocity to linear velocity.

[tex]v = \omega r[/tex]

v = linear velocity (m/s)

ω = angular velocity (3.46 rad/sec)

r = distance from axis of rotation (.12 m)

Plug in the given values.

[tex]v = (3.46)(.12) = \boxed{.415 \frac{m}{s}}[/tex]

A force of 15 newtons is used to push a box along the floor a distance of 3 meters. How much was done?

Answers

Answer:

[tex]45 J[/tex]

Explanation:

The equation for work is:

[tex]Work=Force*Distance[/tex]

We can substitute the given values into the equation:

[tex]Work=15N*3m\\Work=45Nm\\Work=45J[/tex]

Answer:

45 J

Explanation:

w =fd

w = 15(3)

Consider a system to be one train car moving toward another train car at rest. When the train cars collide, the two cars stick together. What is the total momentum of the system after the collision? 800 kg • m/s 1,600 kg • m/s 2,400 kg • m/s 4,000 kg • m/s.

Answers

The momentum of the body is given by the product of the mass and velocity of the body. The total momentum of the system after the collision is 2400 kgm/sec.

What is the law of conservation of momentum?

According to the law of conservation of momentum, the momentum of the body before the collision is always equal to the momentum of the body after the collision.

The momentum of the body is given by the product of the mass and velocity of the body.

According to the law of conservation of momentum

Momentum before collision =Momentum after collision

The given data in the problem is;

mass of train m₁ = 600

mass of car m₂= 400

the velocity of train = 4 m/sec

velocity of car =0 m/sec (rest)

Momentum after collision;

[tex]\rm M_f=m_1v_1+m_2v_2 \\\\\ \rm M_f=600 \times 4 +400 \times 0 \\\\ \rm M_f=2400\;kgm/sec[/tex]

Hence the total momentum of the system after the collision is 2400 kgm/sec.

To learn more about the law of conservation of momentum refer to;

https://brainly.com/question/1113396

Answer:

2,400 kg • m/s

Explanation:

In some years there are more hurricanes than usual. This is probably because In some years there are more hurricanes than usual. This is probably because there are more windy days than usual. the ocean is warmer than usual. the gravitational pull of the Moon is stronger. the ozone layer is very thin.

Answers

Answer:

the ocean is warmer than usual

Explanation:

When the ocean is warmer than usual, more water precipitates upwards into the formation of rain-heavy clouds. When these clouds cross over land and release this large amount of water, hurricanes can be caused.

hope this helps!

How far does a car go in 30 seconds at a speed of 29 m/s? (The equation for
distance is d = st.)

Answers

d = speed x time

distance = 29 x 30

distance = 870m

please mark as BRAINLIEST

please help me with this work ​

Answers

1) less dense
2) denser
3) convection

1. In a certain wire, 10 C of charge passes through it in 100 seconds. What is
the current in the wire?

Answers

Answer:

the correct answer is 10 wires

Explanation:

So you divide 10x the seconds then you know that 10x10 is 100 and then the answer becomes 10.

A 2 µC charge q1 and a 2 µC charge q2 are 0. 3 m from the x-axis. A 4 µC charge q3 is 0. 4 m from the y-axis. The distances d13 and d23 are 0. 5 m. Find the magnitude and direction of the resulting vector R. Round your answer to the nearest tenth.

Answers

The net force on q₃ is 0.46 N vertically upwards along the +Y axis. The product of the two charges is directly proportional to the force.

What is Coulomb's law?

The electrostatic force is directly proportional to the product of the two charges and inversly proportional to the product of the two charges.

The given data in the problem is;

F is the electric force =?

Q₁ is the charged particle 1 = 2 C

Q₂ is the charged particle 2 = 2 C

d₁₂ is the distance between particles = 0.5 m

The electric force is given by;

[tex]\rm F=\frac{ Kq_1q_2}{r^2} \\\\[/tex]

[tex]\rm F=\frac{ 9\times 10^9 (2\times 10^{-6} \times 4\times10^{-6}}{(0.5)^2} \\\\\rm F=0.288\ N[/tex]

This force is applied on both charges

So the result of the net force is given by;

[tex]\rm F_{net}= 2Fcos \theta \\\\ \rm F_{net}==2 \times 0.288 cos 37^0 \\\\ \rm F_{net}=0.46 \ N[/tex]

Hence the net force on q₃ is 0.46 N vertically upwards along the +Y axis.

To learn more about Coulomb's law refer to the link;

https://brainly.com/question/506926

Answer:

Explanation:

E2020

What is the wavelength of this wave?
Frequency: 2 Hz
Speed: 5 cm/s
2.5 Hz
2.5 cm

Answers

Answer:

2.5 cm

Explanation:

velocity = frequency × wave length

5 = 2 × wave length

wave length = 5÷2 = 2.5 cm not Hz because wave length is distance and measured by cm or m

1. How fast is each cyclist going in units of meters per second*?

2. Which cyclist is going faster? How much faster is this cyclist going compared to the other one?​

Answers

Answer:

1. a = 1m/s

b = 3m/s

2. b is faster by 2m/s

Explanation:

v (speed) = d/t

va (speed for cyclist a) = 5/5

1m/s

vb = 9/3

3m/s

comparison = 3 - 1 = 2

difference = 2m/s

cyclist b is going faster because they cover more distance in a second

Answer and explanation please, much appreciated!! ​

Answers

Answer:

Done

Explanation:

I already answered this problem when you had previously asked for it. Kindly refer that solution.

The input force of 29.3 N acting on the effort arm of a lever moves 1.7 m, which lifts a 1 N weight resting on the load arm a distance of 11.1 m. What is the efficiency of the machine (in %, rounded to the nearest 0.1)?

Answers

Hey this is for high school or middle school

convection is the transfer of energy by the motion of heated particles in a fluid. according to this information,which statement best describes an example of convection

A a shirt heated by an iron

B a puddle heated by the sunlight

C a dark colored car heated by sunlight

D warm air rising

Answers

Answer:D warm air rising

please help
Newton second law of motion is F =ma

Answers

Answer: ma is the formula of Newton's Second Law of Motion. Newton's Second Law of Motion is defined as Force is equal to the rate of change of momentum. For a constant mass, force equals mass times acceleration.

Explanation: Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

Hi there!

Using Newton's Second Law:
[tex]F = ma[/tex]

F = Net Force (60 N)
m = mass (30 kg)
a = acceleration (m/s²)

Solve for acceleration given the other values.

[tex]60 = 30a\\\\a = \frac{60}{30} = \boxed{2 \frac{m}{s^2}}[/tex]

If the net force increases (while the mass is held constant), the acceleration will INCREASE.

If the mass of the object increases (while the net force is held constant), then the acceleration will DECREASE.

FIND A RELATION BETWEEN DIRECTION OF ACCELERATION AND THE APPARENT WEIGHT

Answers

Relation Direction the high court

If a person does 20 J of work on a book in 10 seconds, how powerful was the person while doing the work?

Answers

Answer:

2 W

Explanation:

P = W/t

= 20 J / 10 s

= 2 W

A 200 kg man is stuck, motionless, in the middle of a frictionless ice pond. Because it's cold, he's wearing a coat. He wants to get off the pond. Since he has studied physics and knows about conservation of momentum, he decides to throw his 4 kg coat. If he throws the coat at 50 m/s, what will his speed be

Answers

The speed of the man when he throws the coat is 1 m/s.

Conversion of linear momentum

The speed of the man can be determined by applying the principle of conservation of linear momentum as follows;

m₁v₁ = m₂v₂

v₁ = (m₂v₂)/m₁

v₁ = (50 x 4)/200

v₁ = 1 m/s

Thus, the speed of the man when he throws the coat is 1 m/s.

Learn more about conservation of momentum here: https://brainly.com/question/7538238

You push horizontally on a 120-N box that is initially resting on a horizontal table. The coefficient of static friction between the box and the table is 0.75, and the coefficient of kinetic friction is 0.40. Find the friction force on the box if the push is equal to(a) 84 N; (b) 94 N.​

Answers

(a) When the applied force is 84 N, the friction force on the box is 36.02 N.

(b) When the applied force is 94 N, the friction force on the box is 46.02 N.

Frictional force on the box

The frictional force on the box when it is pushed with a certain force is calculated as follows;

Ff  = μFₙ

F - Ff = ma

Mass of the box is calculated as follows;

W = mg

m = W/g

m = 120/9.8

m = 12.24 kg

Acceleration of the box is calculated as follows;

a = μg

a = 0.4(9.8)

a = 3.92 m/s²

When the applied force is 84 N,

F - Ff = ma

F - ma = Ff

84 - 12.24(3.92) = Ff

36.02 N = Ff

When the applied force is 94 N,

F - Ff = ma

F - ma = Ff

94 - 12.24(3.92) = Ff

46.02 N = Ff

Learn more about frictional force here: https://brainly.com/question/4618599

an airplane maintains a heading (W20N)at an airspeed of 900 km/h. It is flying through a hurricane with winds of 300 km/h, from the northeast.
a) In which direction is the plane moving relative to the ground?
(B) -what is the ground speed
(C)how long would it take the plane to fly from one city to another 500 km away along the path in (b)


Show working!!

Answers

Answer:

tan x = 60/700

x = 4.9 degree east north

v = √(60^2  + 700^2)

v = 702.6 kph

hope this helps

Inelastic collisions do not conserve kinetic energy. Does
this violate the Law of Conservation of Energy?

Answers

Answer:

No. Because undefined amounts of energy are also released in deformation of the objects, heat released, etc.

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