Which of the following instruments measures time most accurately?
a. Sundial
b. quartz watch
c. pendulum clock
d. watch with balance wheel

Answers

Answer 1

Answer:

b) Quartz Clock

Explanation:

It's is a very type of clock which uses the vibration of quartz crystals to measure time accurately

Answer 2
B is the answer hope this helps

Related Questions

Help!Yall get brainliest

Answers

Answer:

Explanation:

Good sources include barley, oatmeal, beans, nuts, and fruits such as apples, berries, citrus fruits, and pears. Many foods contain both soluble and insoluble fiber. In general, the more natural and unprocessed the food, the higher it is in fiber. There is no fiber in meat, dairy, or sugar.

Roughage, or fiber, refers to the carbs in plants that your body cannot digest. So meaning false because there is no fiber in meat

In paragraph 3 and paragraph 24, what is meant by the phrase “designer babies”? A. Babies that are bred to be particularly attractive
B. Babies whose DNA has been altered to enhance a specific trait
C. Babies whose DNA has been altered to avoid disease
D. The biological children of genetic researchers

Answers

I think D but. It sure

Question 4 (1 point)
A golf ball is suspended by a cord held in a golfers hand. The reaction to the force of
gravity on the golf ball is the force exerted by

Answers

Answer:

The force of the golf ball on Earth!

Explanation:

Action/Reaction Pairs work like this:

Earth on Golfball, Golfball on Earth.

I got stuck on this question ​

Answers

Answer it 2n

Explanation:

The brakes of a 2000 kg car apply a force of 250 N to slow down a car as it comes off of an exit ramp. What is the acceleration of the car?

Answers

that’s a very good question

I need help please so fast

Answers

Answer:

DUumb

Explanation:

Duumb

that is a difference between a law and a hypothesis?
A law describes how two variables affect each other, but a hypothesis only discusses one variable.
A law must be testable so that it can be proven, but a hypothesis is an untestable explanation.
A hypothesis includes an explanation for why two variables affect each other, but a law only describes how they
affect each other
A hypothesis may or may not be testable, but a law is an untestable explanation of why two variables affect each
other and cannot be proven

Answers

Answer:

A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon.

A law is a statement about an observed phenomenon or a unifying concept, according to Kennesaw State University. ... However, Newton's law doesn't explain what gravity is, or how it works.

hii pls help i’ll give brainliest if you give a correct answer

Answers

Answer: the first option: "the period of revolution of the Moon around Earth"

Answer:

The answer your looking for would be D.

Explanation: The other answers don't make any sense you can cancel them out D is the the answer the period of rotation of the moon around its axis.

Which location, 23 degrees or 48 degrees would experience the same earthquake at stronger intensity?Explain why.​

Answers

Answer:

48 degress

Explanation:

An earthquake causes many different intensities of shaking in the area of the epicenter where it occurs. So the intensity of an earthquake will vary depending on where you are. Sometimes earthquakes are referred to by the maximum intensity they produce. In the United States, we use the Modified Mercalli Scale. Earthquake intensity is a ranking based on the observed effects of an earthquake in each particular place. Therefore, each earthquake produces a range of intensity values, ranging from highest in the epicenter area to zero at a distance from the epicenter.

Two dogs are pulling on a chew toy. One dog pulls the chew toy with 64 N (E) and
the other pulls the chew toy with 31 N [W]. Determine the NET FORCE acting on
the chew toy.

Answers

Answer:

33 N

Explanation:

Given that,

One dog pulls the chew toy with 64 N (E) and  the other pulls the chew toy with 31 N [W].

We need to find the net force acting on the chew toy. Let East be taken positive and west be taken negative. So,

[tex]F_{net}=+64+(-31)\\\\=33\ N[/tex]

So, the net force acting on the chew toy is equal to 33 N.


A box has a mass of 6.0 kg. What is its weight on the mars, where the acceleration due to
gravity is 0.38 times that on Earth? *

Answers

Answer:

The weight of the box is 22.38 N.

Explanation:

The weight (W) of the mass is given by:

[tex] W = mg [/tex]

Where:            

m: is the mass of the box = 6.0 kg

[tex]g_{m}[/tex]: is the acceleration due to gravity of mars

Since the acceleration due to the gravity of mars is 0.38 times that on Earth we have:

[tex]g_{m} = 0.38g_{E} = 0.38*9.81 m/s^{2} = 3.73 m/s^{2} [/tex]

Hence, the weight of the mass is:

[tex] W = mg = 6.0 kg*3.73 m/s^{2} = 22.38 N [/tex]

Therefore, the weight of the box is 22.38 N.

I hope it helps you!      

A police siren has a frequency of 340.0 Hz when the car is stationary and the temperature is 20°C. The police car at point S moves to the right with a speed of 22.0 m/s.
a. What frequency does observer A hear?
b. What frequency does observer B hear?
c. Suppose observer A is moving toward the stationary police car. What is the speed of observer A if the frequency heard is 369 Hz?

Answers

Answer:

a) 361.7 Hz

b) 318.1 Hz

c) 29.3 m/s

Explanation:

a) Speed of sound in 20 degrees celcius is 343 m/s.

Use v=wavelength*frequency to find wavelength.

343=wavelength*340

wavelegth=1.009 meters

Relative speed of waves to observer A = 343+22 = 365 m/s

Plug it back in.

365=1.009*F

F=361.7 Hz

b) Relative speed of waves to observer B = 343-22 = 321 m/s

Plug it back in.

321=1.009*F

F=318.1 Hz

c) STATIONARY CAR, so 369Hz=v/1.009. v=372.3, 372.3-343=29.3m/s!

Some students found this information about an energy saving lamp and a filament lamp that give out almost the same amount of light.
Describe the advantages and disadvantages of each type of lamp.

Answers

Answer:

By replacing your home's five most frequently used light fixtures or bulbs with models that have earned the ENERGY STAR, you can save $75 each year.

Compared to traditional incandescents, energy-efficient lightbulbs such as halogen incandescents, compact fluorescent lamps (CFLs), and light emitting diodes (LEDs) have the following advantages:

Typically use about 25%-80% less energy than traditional incandescents, saving you money

Can last 3-25 times longer.

Which can make 4 covalent bonds? Carbon, Silicon, or both?

Answers

Answer:

I would say both

Explanation:

Each silicon atom has four valence electrons which are shared, forming covalent bonds with the four surrounding Si atoms.

Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules. The simplest organic carbon molecule is methane (CH4), in which four hydrogen atoms bind to a carbon atom (Figure 1).

What happens to the force between charged and uncharged objects as the distance between them decreases?

Answers

Answer:Thus, if each of the charges were reduced by one-half, the repulsion would be reduced to one-quarter of its former value. Also In electrostatics, the electrical force between two charged objects is inversely related to the distance of separation between the two objects. ... And decreasing the separation distance between objects increases the force of attraction or repulsion between the objects.

Hope this helps have a awesome night/day❤️✨

Explanation:

Nothing, until those two objects physically touch each other; contact aligns polarity among the now single shared mass.

(Your question never states if both objects are unique or similar polar charges, so I just assumed they were both neutral objects existing within an electric field.)

So a better question would then be, what is gravity’s relationship with an electric field?

You could solve this with the following: confine the electric field’s volume to a set variable (never increasing nor decreasing in size or shape); density is variable and easily definable. This creates the limit to build upon. This density has to be fluid and has electron mass (full of electrons at rest mass, so with substance but no movement). Within, create a closed system (the hard part in this equation; outside interference like ambient light will eschew results) where each variable of kinetic energy then is accounted for or measurable (including heat and light, and the physical movement of the two objects)

Determine the mass for both objects, calculate gravity for both and each body’s inertia on the other as a sum over distance. record results. Polarity is shared across the masses until there is no longer inertia (one mass or contact).

PLS ANSWER FAST WILL GIVE BRAINLY!!!


When you bounce a ball eventually it will stop bouncing. Where does the energy go?

Answers

Answer:

Into sound and heat energy due to friction.

Calculate the efficiency of a hairdryer that has a total power input of 2000W and a useful power output of 1200W.

Answers

Answer would be 40 w

A woman hikes 2.5 kilometers in 30 minutes, and then 3 kilometers in 20 minutes, and finally 2 kilometers in 10 minutes. What was her average speed?

Answers

Answer:

7.5 kph

Explanation:

2.5+3+2=7.5

aight here's the question:

Homeboy Joe is running at 6.65 m/s while Homegirl Jill is running at -1.10 m/s. Home boy Joe and Homegirl Jill hit each other. Homeboy Joe not wanting to be a stage 5 clinger. he makes sure he doesn't hold onto Homegirl Jill after they collide. If Homeboy Joe's mass is 99.5 kg and Homegirl Jill's mass is 68.8 kg. what is Homegir Jill's velocity after they hit if Homeboy Joe's velocity is 2.35?

***Round to the nearest hundredth***

Correct Answer: 5.12

I can't do PEMDAS to save my life can someone show me the correct way to solve with work? ​

Answers

Answer:

[tex]5.12\:\text{m/s}[/tex]

Explanation:

From the conservation of momentum, the total momentum of the system before and after the collision must be the same. Therefore, let the momentum of Homeboy Joe be [tex]p_b[/tex] and let the mass of Homegirl Jill be [tex]p_j[/tex]. We can write the following equation:

[tex]p_{bi}+p_{ji}=p_{bf}+p_{jf}[/tex], where subscripts [tex]i[/tex] and [tex]f[/tex] represent initial and final momentum respectively.

The momentum of an object is given by [tex]p=mv[/tex].

Therefore, we have:

[tex]m_{b}v_{bi}+m_{j}v_{ji}=m_{b}v_{bf}+m_{b}v_{jf}[/tex] (some messy subscripts but refer to the values being plugged in you're confused what corresponds with what).

Plugging in values, we have:

[tex]99.5\cdot 6.65 + 68.8\cdot (-1.10)=99.5\cdot 2.35+ 68.8\cdot v_{jf}[/tex].

Solving, we get:

[tex]v_{jf}=\frac{99.5\cdot 6.65+68.8\cdot (-1.10)-99.5\cdot2.35}{68.8},\\v_{jf}=5.11875,\\v_{jf}\approx \boxed{5.12\:\text{m/s}}[/tex].

It's important to note that velocity is vector quantity, so the negative velocity assigned to Jill simply implies she is moving at [tex]1.10\:\text{m/s}[/tex] in the opposite of Joe's direction. After the collision, she is now moving [tex]5.12\:\text{m/s}[/tex] in the same direction that Joe was initially moving, due to Joe's relatively large mass and initial velocity.

Features of Elements
Use the periodic table on the next page to complete the following
table. The number in the name indicates the isotope and therefore
the nuclide number
Element and Chemicol Atomic Mass
Number Number
of
of
Hudito
isotope
number
Symbol.
number
notation
profons neutrons
2 4 나
Helium-4
He
Beryllium-9
Nitrogen-14
N
Oxygen 10
0
Phosphorus 32
P
Chlorine-35
Potassium 39
Tungston-150
w
Lead 90
PU

Answers

I agree nuclide number of atomic mass

Which is the correct definition for sea floor spreading

Answers

In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added.


In result, the ocean floors move like conveyor belts, carrying the continents along with them

what's the difference between work and power

Answers

Work is defined as the process of energy transfer to the motion of an object through the application of force. ... Power is defined as the amount of energy transferred in unit time. The SI unit of power is the watt.

You need to have power or energy, to be able to work. When you reach another lesson, you will learn about time, which is the flow of work you have done. You need more work than time for your work to count.

If you need more help, don't hesitate to ask!

May I please have brainliest?

WORK is the amount of energy used to get something done.

POWER is the RATE at which the energy is used and the work is done.

please help!

A proton moves perpendicularly to a magnetic field that has a magnitude of 4.20 x 10-2 T. What is the speed of the particle if the magnitude of the magnetic force on it is 2.40 x 10-14 N?​

Answers

Answer:

V=3.57 × 10^6 m/s

hope it is helpful..

The speed of the proton in the magnetic field is 3.57×10⁶ m/s.

To determine the speed of the proton, we need to know about the magnetic force experienced by a charged particle in a magnetic field.

What is the magnetic force on a charge particle in a magnetic field?From lorentz law, the magnetic force on a charge particle is given as

               F=q×v×B

  where, q= charge of the particle

              v= speed of the particle

              B= magnetic field

What will be the speed of the charge particle, proton, if the magnetic field and force are given?Magnetic force(F)= q×v×B

       v=F/(q×B)

Here, B= 4.20×10⁻²T

                  F=2.40×10⁻¹⁴N

                  q= 1.6×10⁻¹⁹C

       Then, v= 2.40×10⁻¹⁴/ ( 4.20×10⁻²× 1.6×10⁻¹⁹)

                   = 3.57×10⁶ m/s.

Thus, we can conclude that the speed of the proton in the magnetic field is 3.57×10⁶ m/s.

Learn more about the magnetic force here:

https://brainly.com/question/25932320

#SPJ2

What type of tool would best be used to map a section of the ocean floor?

Answers

Echo sounding is the key method scientists use to map,uses sound waves bounced off the ocean bottom.

There are three tools used to map the ocean floor, sonar, satellites, and submersibles.

The cerebellum is part of the
____?

Answers

Explanation:

i think it the central nervous system

What happens to particles of a substance as its temperature increases? A the average kinetic energy increases B the average kinetic energy decreases C the average kinetic energy stays the same D nothing happens

Answers

the answer is A. When the the temperature increases the kinetic energy increases

What is the study of economics?​

Answers

Answer:

Economics is the study of how societies use scarce resources to produce valuable commodities and distribute them among different people.

Explanation:

The ultimate goal of economic science is to improve the living conditions of people in their everyday lives.

Hope this helps!

Answer:

the branch of knowledge concerned with the production, consumption, and transfer of wealth. (basically the study of money and not just banks but how it effects the world)

Explanation:

How much work is required to raise a 0.75 kg flag from shoulder height (1.2m) To the top of the flag pole (4 m)?

Answers

Answer:

20.58J

Explanation:

[tex]W=\Delta E[/tex]

[tex]\Delta E= \Delta U_{g}[/tex]

[tex]\Delta U_{g}=mgh[/tex]

[tex]mgh=(.75kg)(9.8m/s^2)(2.8m)=20.58J[/tex]

Identify the order of The Sun, Moon, and Earth During a solar and lunar eclipse.

Answers

Answer:As the Earth rotates on its axis and revolves around the Sun, day and night and seasons result. When the new moon comes between the Earth and the Sun along the ecliptic, a solar eclipse is produced. When the Earth comes between the full moon and the Sun along the ecliptic, a lunar eclipse occurs.

Explanation:

Consider an alien on a planet with an acceleration of gravity equal to 20 m/sec^2. If the alien's mass is 10 kg, how much does the alien weigh?

Answers

Answer:

the weight of alien is 200 newtons

Explanation:

The computation of the alien weight is shown below:

Given that

Acceleration = 20m/sec^2

And, the mass is 10 kg

So, the weight of alien is

= 20 × 10

= 200 newtons

hence, the weight of alien is 200 newtons

Other Questions
In order to end a filibuster, the Senate must have a 2/3 vote to do so. This is calledO A. ClotureO B. Crying shameO C. ReapportionmentD. Gerrymandering A wire 2.5 meters long was cut in a ratio of 1 : 4, find the measure of the longer part of the wire after cutting? Check Check Match the function to the correct part of the cell. DNA controls the activities of the cell nucleus supports and protects the organelles in the cell cytoplasm contains instructions on how a cell functions Which best describes the mean of a set of data? A. The difference between the lowest and the highest values in a set of data.B. The average of a set of data.C. The value that occurs most frequently in a set of dataD. The middle value in a set of data. Help Easy Question and Brainly. What's the answer????? 12. Tu mam tesalir en la nieve sin gorra o guantes?No, tena que llevar mi abrigo, gorra y guantes cuando haca fro.a. obedecab. ofrecac. permitad. divertia Riddle How many letters are in the ALPHABET? What is the effect of climate on ice?How does ice affect water systems? Which of the following sentences from the paragraph contain a comparative adjective? Choose two that apply. a.The long hatch popped open and there they were.b.We stood stunned, our hearts applauding their arrival with every beat. c.But even though we had the best technology in the universe, a trick of the eye caught us out. d.In the video images, they had appeared to be a bit taller than we are, relative to the things in their environment. e.It appeared, however, that their trees were much, much shorter than ours, because the aliens were much, much shorter than we are. 4. Find the value of x.A) 6 2B) 12 3C) 24 3D) 12 Please help with art questions....I am NOT good with art are questions Which of the two parts of the light microscope magnify image of an object? ANSWER ONE OF THESE QUICK PLEASE!!1.) Which of the following is an example of person versus self conflict?A- the character deals with her own neuroses and self- doubt.B- a girl struggles against a scary witchC- a pig fights for his survival in a world where people eat pigs D- the protagonist contends with marlin ( a big fish ). 2) characterization refers to how the characters in a story are...A- related to one another.B- represented by a symbol C- interpreted by the reader.D- developed by the author. 3) the best definition of an internal conflict is..A- an interaction with the setting and other characters B- a troubling event taking place within two locations C- a conflict occurring between two or more characters.D- a problem that happens within a character. 4) which of the following is an example of internal conflict ?A- Bobby fighting with his brother over sharing a ball.B- Bobby struggling to stay warm during a football game C- Bobby decided wether or not to tell his parents that he broke the lamp. Write a number with one decimal place, that is bigger than 5 1/3but smaller than 5.5 Saginaw Inc. completed its first year of operations with a pretax loss of $692,500. The tax return showed a net operating loss of $884,500, which the company will carry forward. The $192,000 booktax difference results from excess tax depreciation over book depreciation. Management has determined that it should record a valuation allowance equal to the net deferred tax asset. Assuming the current tax expense is zero, prepare the journal entries to record the deferred tax provision and the valuation allowance. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) Please help, I'll give 5 stars and brainliest! Can someone please help me!! A car travles at a speed of 44mph for 15 minutes. Calculate how far it travles. 1.5+4=2.31.2 in decimal form A student lifts her 15-kg backpack from the ground to her shoulder raising it 1.5 meters. Determine the work she does to life the backpack