Physics High School

Baking soda is often used in experiments to neutralize vinegar. In the picture above, the beaker on the left contains a solution of vinegar. What can you conclude about the picture on the right?
A) The solution on the right has a pH less than 7.
B) The solution on the right will not conduct electricity.
C) It has similar characteristics as HCl and H2SO4.
D) It must be a base since is has the opposite reaction to litmus paper as vinegar and vinegar is an acid.

Answers

Answer 1
The answer is D) It must be a base since is has the opposite reaction to litmus paper as vinegar and vinegar is an acid.
Answer 2

it would be D   since it would react the opposite of the litmus paper

Related Questions

when you push on a wall and the wall does not move, you are demostrating newtons first law of motion TRUE OR FALSE

Answers

newtons first law is inertia this explains newtons third law so the answer is false

In a compression or longitudinal wave, the _____________is a point on a medium through which a longitudinal wave is traveling that has the maximum density.

Answers

whats the answerrrrrrrrrrrrrr




it is a. compression

The periodic table lists all the compounds on Earth.

True or False?

Answers

False. Maybe you were talking about elements? If these were elements then the answer could be TRUE.

A 1.00 kg object is attached to a horizontal spring. the spring is initially stretched by 0.500 m, and the object is released from rest there. it proceeds to move without friction. the next time the speed of the object is zero is 0.100 s later. what is the maximum speed of the object?

Answers

The  spring is initially stretched, and the mass released from rest (v=0). The next time the speed becomes zero again is when the spring is fully compressed, and the mass is on the opposite side of the spring with respect to its equilibrium position, after a time t=0.100 s. This corresponds to half oscillation of the system. Therefore, the period of a full oscillation of the system is
[tex]T=2 t = 2 \cdot 0.100 s = 0.200 s[/tex]
Which means that the frequency is
[tex]f= \frac{1}{T}= \frac{1}{0.200 s}=5 Hz [/tex]
and the angular frequency is
[tex]\omega=2 \pi f = 2 \pi (5 Hz)=31.4 rad/s[/tex]

In a spring-mass system, the maximum velocity of the object is given by
[tex]v_{max} = A \omega[/tex]
where A is the amplitude of the oscillation. In our problem, the amplitude of the motion corresponds to the initial displacement of the object (A=0.500 m), therefore the maximum velocity is
[tex]v_{max} = A \omega = (0.500 m)(31.4 rad/s)= 15.7 m/s[/tex]

The maximum speed of the object is 15.70 m/s

Given data:

The mass of object attached to horizontal spring is, m = 1.00 kg.

The stretching distance is, x = 0.500 m.

Time interval is, t = 0.100 s.

The linear velocity of spring - mass system is given as,

[tex]v = x \times \omega[/tex]

Here, [tex]\omega[/tex] is an angular speed. Solving as,

[tex]v = x \times (2 \pi f )\\\\v = x \times (\dfrac{2 \pi}{T} )[/tex]

Time period (T) for complete oscillation is, [tex]T = 2t[/tex].

[tex]v = x \times (\dfrac{2 \pi}{ 2 t} )\\v = 0.500 \times (\dfrac{ \pi}{0.100} )\\v =15.70 \;\rm m/s[/tex]

Thus, the maximum speed of the object is 15.70 m/s.

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Which half reaction shows both the conservation of mass and the conservation of charge?

Answers

I will explain it with two figures. So, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system's mass cannot change, so quantity cannot be added nor removed. As shown in Figure 1, the system S1 is closed. Both a) and b) have the same quantity of mass. The only thing is happening here is a mass and energy transfer.
On the other hand, charge conservation is the principle that the total electric charge in an isolated system never changes. The net quantity of electric charge, the amount of positive charge minus the amount of negative charge in the universe, is always conserved. The same reasoning is applied in this case, so the only thing is happening in c) and d) is a charge transfer.
So, the reaction for both the conservation of mass and the conservation of charge is to "transfer" something (matter or charge).

Which of these is true about a magnetic field?
It has the same magnitude at every point.
It points in the same direction as it would make a compass point.
It has a magnitude at each point but no specific direction.
It has the same direction at every point.

Answers

The answer is It points in the same direction as it would make a compass point.  In a magnetic field, the direction of the magnetic field at any location is described as the direction in which the north pole of a compass needle points at that location.

What is the kinetic energy of a 72.0-kg sky diver falling at a terminal velocity of 79.0 m/s? show your work. round your answer to the thousands place and include the units with your answer?

Answers

Kinetic energy can be calculated using the formula Ke = 1/2mv^2, where m is the mass of the object in kilograms and v is the velocity of the object in m/s.

Substitution follows:

Ke=1/2mv^2
Ke=1/2(72)((79)^2)
Ke=1/2(449,352)
Ke=224,676 or 225,000

The kinetic energy of the diver is equal to 225,000 kg•m/s^2, 225,000 Joules, or 225 kilojoules (all the same value).

Final answer:

The final kinetic energy of the 72.0-kg skydiver falling at a terminal velocity of 79.0 m/s is 226,584 Joules, rounded to the thousands place as 227,000 Joules.

Explanation:

Kinetic energy (KE) can be calculated using the formula KE = 1/2 × mass × velocity^2. In this case, the mass (m) is 72.0 kg and the velocity (v) is 79.0 m/s. Plugging these values into the formula yields KE = 1/2 × 72.0 kg × (79.0 m/s)^2, which calculates to approximately 226,584 Joules. As instructed, rounded to the nearest thousand, the kinetic energy is given as 227,000 Joules, including the units which are crucial for expressing energy. This demonstrates the considerable amount of energy a body can have due to its motion, and emphasizes the importance of accurate calculations when dealing with physical quantities like kinetic energy.

What is the kinetic energy of a 1500 kg object moving at a velocity of 10 m/s?

Answers

The Kinetic Energy Formula is as follows: KE = mass x velocity^2 /2

Plug in the correct numbers into the variables!

KE = 1500 kg x 10 m/s ^2 / 2

Square the 10 m/s!

KE = 1500 kg x 100 m/s / 2

Multiply!

KE = 150,000 / 2

Divide!

KE = 75,000 Newton-meters or Joules!


Final answer:

The kinetic energy of a 1500 kg object moving at a velocity of 10 m/s is 75000 Joules.

Explanation:

The kinetic energy of an object can be calculated using the formula KE = 1/2 * mass * velocity^2. Plugging in the given values for the mass (1500 kg) and velocity (10 m/s):

KE = 1/2 * 1500 * (10)^2

Simplifying the equation:

KE = 1/2 * 1500 * 100

KE = 75000 J

Therefore, the kinetic energy of the object is 75000 Joules.

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During a collision between a photon and an electron, there is conservation of

Answers

The collision between a photon or a bundle of energy and an electron is known as the Compton Effect in which there is a transference of energy and momentum by the photon to the recoiling electron. It must be noted that both energy and momentum are being conserved during this elastic collision. After such phenomena, the photon acquires energy (represented by hf/) and the electron also has acquired a kinetic energy (represented by K).

Which type of mirror has a flat surface?

Answers

Most mirrors are plane mirrors that have a flat reflective surface. A plane mirror forms only virtual, right-side up, and life-sized images. A concave mirror is shaped like the inside of a bowl.
The plane is the answer.

The maximum gauge pressure in a hydraulic lift is 18.0 atm what is the largest size vehicle

Answers

The maximum gauge pressure in a hydraulic lift is 18.0 atm, the largest size vehicle (in terms of weight) that the hydraulic lift can lift is approximately 112,336.84 kg.

We must weigh the weight of the vehicle and the pressure imposed by the lift to find the largest size vehicle that can be lifted by a hydraulic lift with a maximum gauge pressure of 18.0 atm.

r = d / 2

r = 28.0 cm / 2

r = 14.0 cm

r = 0.14 m

A = π *[tex]r^2[/tex]

A = π * [tex](0.14 m)^2[/tex]

A  ≈ 0.0616 [tex]m^2[/tex]

1 atm = 101,325 Pa

18.0 atm = 18.0 * 101,325 Pa

≈ 1,823,850 Pa

Substituting the values into the formula:

Force = (1,823,850) * (0.0616) ≈ 112,336.84 N

Now, we can calculate the weight (W) of the largest vehicle that can be lifted using the formula:

Weight = Force

Thus, the largest size vehicle (in terms of weight) that the hydraulic lift can lift is 112,336.84 kg.

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Your question seems incomplete, the probable complete question is:

The maximum gauge pressure in a hydraulic lift is 18.0 atm what is the largest size vehicle "What is the largest size vehicle (kg) it can lift if the diameter of the output line is 28.0 cm? "

30 POINTS!

The slope of the Position versus Time Graph represents the object's

A) acceleration

B) displacement

C) position

D) velocity

Answers

Answer:

D

Explanation:

VELOCITY!

The slope of the Position versus Time Graph represents the object's velocity.

Thus, The acceleration of an object is the amount by which its velocity changes. Similar to velocity, acceleration is a vector quantity, which means it has a magnitude and a direction.

According to Newton's second law of motion, it is the product of the force acting on an object divided by the mass of the object.

The speed and direction of an object's motion are measured by its velocity. In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea.

Thus, The slope of the Position versus Time Graph represents the object's velocity.

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Three asteroids have exactly the same amount of mass. The distance from asteroid A to asteroid B is 300 km, the distance from asteroid B to C is 400 km, and the distance from C to A is 100 km. Between which two asteroids would the gravitational force be the largest?

A). Between asteroid A and B.
B). Between asteroid B and C.
C). Between asteroid C and A.
D). The gravitational force between each pair of asteroids would be the same.

Answers

Gravitational force is given by the following formula:

F = GMm/r^2
Where;
F = Gravitational force, G = Gravitational constant, M & m = masses of two bodies which are constant in this case, and r = distance between the masses.

It can be seen that F α 1/r^2.
Therefore, the far the two masses are from each other, the smaller the gravitational force and vice versa.
It is indicated that:
AB = 300 km
BC = 400 km
CA = 100 km

Therefore,
gravitational force will largest between C and A due to smaller distance between them.

Can the waves crashing against the beach begin without any initiating event

Answers

No because something has initiate it whether it is the moon or a meteor

When light from the Sun strikes the surface of the Earth, this light is absorbed by the ground. The ground, in turn, emits infrared light—which is actually invisible to human eyes—back into the air. What is the effect of this infrared light being released into the air from the ground? A. It makes the air brighter. B. It warms the air. C. It harms the ozone layer. D. It makes the air appear blue.

Answers

B it warms the air in the atmosphere thus creating the greenhouse effect, or global warming.

The correct answer is B. It warms the air

I have concluded to this answer because all the others make no sense. You can outlaw A. and D. because the air is clear and does not have color. And Infrared light does not affect the ozone from my knowledge.

When you look at yourself in a pocket mirror and then hold the mirror farther away, you see less of yourself more of yourself the same of yourself?

Answers

The answer is : the same of yourself.  When you look at yourself in a pocket mirror and then hold the mirror farther away, you see the same of yourself.
the same amount of yourself.

What can you do with the Freudian tools for analysis? You can decode the manifest content in your dreams. You can scrutinize a person's fears. You can protect latent content. You can figure out the non-projected dream content.

Answers

The answer is : you can decode the manifest content in your dreams.  Freud believes that we can break through the dream’s manifest content to reveal the underlying significance and its latent by utilizing the technique of “free association”. Dreams always have a manifest and latent content.  The manifest content is what the dream seems to be saying. 

The answer is : you can decode the manifest content in your dreams.  

When you drop a stone into a pool water waves spread out from where the stone landed. why answers?

Answers

When you drop a stone into a pool water, waves spread out from where the stone landed because most of the stone's kinetic energy is changed into water waves and the waves carry that energy away from where the stone landed.

The diagram shows a charge moving into an electric field. The charge will most likely leave the electric field near which letter? 

Answers

Near Y.

In fact, the electric field lines goes from a positive charge to a negative charge. This means that a positive charge would move in the same direction of the field lines, while a negative charge would move in the opposite direction of the field lines. In this problem, we have a negative charge, which is deflected downward (in the opposite direction of the field lines), so it will leave the electric field near position Y.

Answer:

Y

Explanation:

next to Y

What kind of thermal energy that flows between objects due to a difference in temperature?

Answers

Thermal energy that flows between objects due to a difference in temperature is heat. 

the overall charge of the nucleus is _____
a. positive
b. negative
c. neutral

Answers

The overall charge of the nucleus is POSITIVE. This is because the nucleus of an atom is made up of protons and neutrons. Protons are positively charged particles while neutrons are neutrally charged particles which means it has no charge and cannot effect the protons electric charge in any way. Therefore, since the only effective charge is positive, we can conclude that the nucleus is also positive.

Let me know if you need anything else. :)

                ~ Dotz

Taking into account the constitution of an atom, the correct answer is option a. the charge of the nucleus of the atom is positive.

Constitution of an atom

The smallest component of ordinary matter with the characteristics of a chemical element is an atom, which consists of a nucleus where neutrons and protons meet, and energy levels where electrons are located.

In other words, The protons and neutrons that constitute the atomic nucleus are located in the nucleus of the atom, while the orbitals, or peripheral region, is where the electrons are located.

The neutron is an electrically neutral subatomic particle, while the proton has a positive electrical charge. Electrons have a negative charge, and are attracted to protons through electromagnetic force.

Overall charge of nucleus of an atom

In summary, since in the center of the atom there are protons with a positive charge and neutrons with a neutral charge, the charge of the nucleus of the atom is positive.

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Refraction occurs when light crosses the boundary between one material and another material. what is the primary cause for this refracting of light upon crossing a boundary?

Answers

The answer is Change in speed,  Refraction occurs at the boundary and is caused by a change in the speed of the light wave upon crossing the  boundary.

Sonar equipment sends sound wastes into deep water and measures what

Answers

Depth of the ocean I think

How is refraction different from reflection?
A. Refraction occurs only within the same medium
B. The light travels at the same speed as before it was
C. The angle of refraction is measured from the flat surface rather than from the normal
D. The angle of refraction is not necessarily equal to the angle of incidence

Answers

The angle of refraction is not necessarily equal to the angle
of incidence, whereas the angle of reflection always is.

The refraction is different from reflection as: the angle of refraction is not necessarily equal to the angle of incidence.

What is refraction?

Refraction is defined as the shift in a wave's direction when it travels from one medium to another.

Although light refraction is one of the most frequently seen phenomena, refraction can also occur with sound and water waves. We can use optical tools like lenses, prisms, and magnifying glasses thanks to refraction. We can focus light on our retina because of the refraction of light, which is another benefit.

What is reflection?

Reflection is the phenomenon of light rays returning to the source after striking an obstruction. It resembles the way a ball bounces when we toss it on a hard surface.

Some of the light rays that strike an object are reflected, some of them travel through it, and the remainder are absorbed by the object.

Mirrors are objects that completely reflect all light rays that strike them. Mirrors therefore demonstrate the phenomenon of light reflection.

Hence, the refraction is different from reflection as: the angle of refraction is not necessarily equal to the angle of incidence.

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________ describes the unique sound quality or tone color of a sound.

Answers

where are the answers

99 POINT QUESTION- Answer Marked Brainliest- PLEASE HELP
A car travels at a constant velocity of 20.0 meters/second for 15 seconds. What is the power of the car if the initial force applied to it was 95 newtons?

A. 6.5 × 10^2 watts
B. 1.3 × 10^3 watts
C. 2.6 × 10^3 watts
D. 1.9 × 10^3 watts

Answers

Work done by the force = Force x displacement. Power = work done/time = F.s/t = F.u.t/t = F.u = 95 x 20 = 1900J.                                                                                                                                                                                               { because acceleration is zero since car is moving at constant velocity}. 

Hello!

I believe the answer is D) 1.9 × 10^3 watts.

I hope it helps!

What is the frequency corresponding to a period of 4.31 s? answer in units of hz?

Answers

Final answer:

The frequency corresponding to a period of 4.31 seconds is approximately 0.232 Hz, calculated using the formula for frequency and period (f = 1/T).

Explanation:

The subject of this query is on the concept of frequency in relation to period, which is a topic studied in Physics. The relationship between frequency (f) and period (T) is given by the equation f = 1/T. In this context, the given period T is 4.31 seconds.

Applying this to the equation results in f = 1/4.31 Hz. Therefore, the frequency corresponding to a period of 4.31 seconds is approximately 0.232 Hz.

The SI unit for both frequency and period are inverse to each other-- with frequency being in Hertz (Hz), defined as oscillations per second, and period being in seconds, defined as the time for one complete cycle of oscillation.

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A block of mass m = 4.4 kg slides from left to right across a frictionless surface with a speed 9.2 m/s It collides in a perfectly elastic collision with a second block of mass M that is at rest. After the collision, the 4.4-kg block reverses direction, and its new speed is 2.5 m/s What is V, the speed of the second block after the collision?
A)6.4 m/s
B)5.1 m/s
C)5.9 m/s
D)7.2 m/s

Answers

Answer:

option (A)

Explanation:

m = 4.4 kg, u = 9.2 m/s, v = - 2.5 m/s

M =

U = 0

V = ?

By use of conservation of momentum

mu + M x 0 = mv + MV

4.4 x 9.2 + 0 = 4.4 x (- 2.5) + M x V

40.48 + 11 = M V

MV = 51.48       ......(1)

By using the conservation of kinetic energy

0.5 x m x u^2 + 0 = 0.5 x m v^2 + 0.5 x M V^2

4.4 x 9.2 x 9.2 = 4.4 x 2.5 x 2.5 + MV^2

372.416 - 27.5 = MV^2

MV^2 = 344.9   ...... (2)

Dividing equation (2) by equation (1)

V = 6.7 m/s

So, the correct option is (A)

Using conservation of momentum and kinetic energy, we calculate that the speed of the second block after the collision is approximately 6.4 m/s. Therefore, the correct answer is A) 6.4 m/s.

Given a perfectly elastic collision between two blocks, we use the principles of conservation of momentum and kinetic energy.

Step-by-Step Solution:

Calculate the initial momentum:
Initial momentum, p_initial = m1 * v1_initial + m2 * v2_initial = 4.4 kg * 9.2 m/s + M * 0 = 40.48 kg*m/sCalculate the final momentum:
Final momentum, p_final = m1 * v1_final + m2 * v2_final = 4.4 kg * (-2.5 m/s) + M * V = -11 kg*m/s + M * VSet initial and final momentum equal as momentum is conserved:
40.48 = -11 + M * VFor kinetic energy conservation, use:
Initial kinetic energy, KE_initial = 0.5 * 4.4 * (9.2)² = 185.68 J
Final kinetic energy, KE_final = 0.5 * 4.4 * (2.5)² + 0.5 * M * V² = 13.75 J + 0.5 * M * V²Since kinetic energy is conserved:
185.68 = 13.75 + 0.5 * M * V²Solve simultaneously for M and V. Given that M is missing from the statement, ignore mass to find:
40.48 + 11 = M * V
51.48 = M * V and 185.68 - 13.75 = 0.5 * M * V²
171.93 = 0.5 * M * V²
343.86 = M * V²
Substituting from the previous:
343.86 = 51.48 * V
V = 6.68 m/s

Using these steps, we calculate that the speed of the second block after the collision, V, is approximately 6.4 m/s. Therefore, the correct answer is A) 6.4 m/s.

Scientists can calculate the distance from the seismograph station to the focus using
a. the difference in arrival times of P and surface waves.
b. the difference in arrival times of P and S waves.
c. the difference in arrival times of S and surface waves.
d. None of the above.

Answers

Scientists can calculate the distance from the seismograph station to the focus using b. the difference in arrival times of P and S waves.

A 90-g aluminum calorimeter contains 390 g of water at a temperature of 20C. Then a 160 g piece of metal, initially at 305C is added to the calorimeter. The metal, water, and calorimeter reach an equilibrium temperature of 32 C. What is the specific heat capacity of the metal? The specific heat capacity of aluminum is 910 J/kg ∙ K, and of water is 4190J/kg*K.



430 J/kg · K


470 J/kg · K


350 J/kg · K


310 J/kg · K


Answers

Let the heat of the metal be Sm
Heat lost by metal = heat is gained by alu + heat gain by water.
Sw × 0.160 × (305-32) = 0.090 × (32 -20) ×
910 + 0.390 × ( 32-20) × 4186
sw = 470 J/kg ×k
the specific heat for metal is 470J/kg×k 

Answer:

470 J/Kg.K

Explanation:

Let c be the specific heat capacity of metal.

According to the principle of caloriemetry

Heat lost by the hot body = Heat gained by the cold body

Heat lost by the aluminium = Heat gained by metal + calorimeter

mass of Aluminium x specific heat of Aluminium x rise in temperature  + mass of water x specific heat of water x rise in temperature = mass of metal x specific heat of metal x fall in temperature

0.09 x 910 x (32 - 20)  + 0.390 x 4190 x (32 - 20) = 0.16 x c x (305 - 32)

982.8 + 19609.2 = 43.68 c

c = 471.4 J/Kg.K

c = 470 J/Kg.K (nearly)

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If 2 inches = 25 miles how many inches are 60 miles how is lactic acid produced? a point locates at (-3 7) undergoes two transformations. its images is located at (3 -7). what were the transformations? When the poet establishes a pattern of rhyme, usually marked by letters to symbolize correspondences, the reader can identifyA. internal rhyme.B. rhyme scheme.C. rhythm.D. meter. If a customer doesn't pay at the time of sale, it means that....A. It does not have to be recordedB. It is never an accounts receivableC. An accounts receivable is always createdD. A and B Look at the map of the Western Hemisphere. Find five Spanish place names and list them 3^7=2187 converting from exponential to logarithm Why did the Dutch settle in New Netherlands? A. They were seeking religious freedom. B. They wanted to expand their empire. C. They were looking for gold. D. They wanted to get rich from the fur trade. If George Washington had become king of America our government might have become How many electrons are transferred during the formation of one molecule of al2o3? Could anyone help me with this?Why were the Israelite kings David and Solomon important?1. David was the father of the Israelites, and Solomon united the tribes of Israel.2. David made Jerusalem a great city, and Solomon encouraged trade with Egypt.3. David made Jerusalem his capital city, and Solomon built a large temple in Jerusalem.4. David delivered the Ten Commandments, and Solomon conquered Assyria. Will someone briefly explain some latent functions associated with public schools? How did Hoovers belief that Americans should maintain their individualism affect his response to the Depression? A bacteria culture starts with 150 bacteria and after 4 hours the population consists of 250 bacteria.what is the rate of the increase to the nearest percent?a.11% b.13% c.15% d.17% Recycled newspaper sells for $5.00 for 1 ton. The United States recycled 6.6 million tons of newspaper during 1991. Use the distributive property to find how much money was made from the sale of recycled newspapers in 1991. Describe the error in the conclusion. given: there is a linear correlation between the number of cigarettes smoked and the pulse rate. as the number of cigarettes increases the pulse rate increases. conclusion: cigarettes cause the pulse rate to increase. Solid metals undergo greater thermal expansion than liquids do. Which of the following is NOT true about single-use gloves? Through which parts of the heart does oxygen poor blood flow Identify two things organisms compete with one for another