what best describes a reference fram?

Answers

Answer 1

Answer:

A reference frame is that frame to which the qualities of an object are related:

For instance - an object may described by - mass, speed, acceleration, size,  etc,

It is important to remember that Newton's Laws of motion do not hold in accelerated reference frames -

Einstein's laws of special relativity are only true in frames that move with contant speed to one another


Related Questions

N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2. 8 v

Answers

The value of inductance, when N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v, is 8.485×10³ H.

What is inductance?

The inductance is the ability or the property of an electric conductor by which it opposes the amount of current flowing from it. It can be calculated with the following formula.

[tex]X_L=\dfrac{V_{rms}}{I_{rms}}[/tex]

Here, V is voltage and I is current value.

N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v. Put the values in the above formula as,

[tex]X_L=\dfrac{V_{rms}}{I_{rms}}\\X_L=\dfrac{2.8}{330\times10^{-6}}\\X_L=8.485\times10^3 \rm \;H[/tex]

Thus, the value of inductance, when N inductor has a peak current of 330 μa when the peak voltage at 44 mhz is 2.8 v, is 8.485×10³ H.

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A metal spoon is put in a cup of hot tea and then put it into the mouth. The spoon is not very hot, but the tea is much hotter. Why?

Answers

It’s hot you’re mouth is cold right

What portion of the electromagnetic spectrum is used for mass spectrometry

Answers

The energy of the electromagnetic spectrum is not used in mass spectrography to make measurements.

What is mass spectrometry?

In physics and chemistry, mass spectrometry refers to statistical analytical techniques that allow scientists to determine the mass distribution of various types of molecules based on their mass on a substance.

The energy of the electromagnetic spectrum is not used in mass spectrography to make measurements. The process of mass spectrometry is primarily based on the interaction of molecules with a beam of electrons (rather than photons) and the subsequent measurement.

Hence the energy of the electromagnetic spectrum is not used in mass spectrography to make measurements.

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The potential energy of an orange on a tree is 6.0 joules. The orange is 5m high. What is the orange's mass?

0.12 kg.

10 kg

100 g

1 kg​

Answers

P.E=6.0. G=10m-2 D= 5m. P.E= kg Times 10 times 5 = 6. = kg50 over 50 ,50 cancel 50 = 6 divided by50 . =0.12 kg.

physics 13

physics geniuses where r u need help!!!
----------------------


pls also check other questions!

Answers

Answer:

Microphone

Explanation:

Microphone is the device which converts sound into electrical energy by electromagnetic induction

Light with a photon energy of 3 ev impinges on the surface of a material with work function 0.6 ev to eject electrons. what is the kinetic energy of the outgoing electrons

Answers

Answer:

KE = incident energy - work function

The maximum KE will be (3 - .6) eV = 2.4 eV

The voltage across two points in an electric circuit is
876 mV. A power source does 1 901 kJ of work
when moving a certain amount of charge between
these two points.
Determine the amount of charge that moved between
between the two points.

Answers

Answer:

V=w/q V= 1.2/0.4* 10 ^-3 V = 3 * 10 ^ 3 V = 3000 v

if its not correct let me know so I can figure it out

Contrast series and parallel circuits in terms of what they look like and how they calculate Equivalent resistance

Answers

In a series circuit the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component.

In a parallel circuit, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.

Let's see

For series connection

[tex]\\ \rm\Rrightarrow R_{eq}=R_1+R_2+R_3\dots[/tex]

For parallel connection

[tex]\\ \rm\Rrightarrow \dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}\dots[/tex]

A mouse eats 20 kJ of energy. The mouse uses 8 kJ of energy moving around. What would most of the leftover energy be turned into? ant is the leftover energy useful or wasted?

Answers

Answer:

to be turned into glycogen not wasted

Explanation:

Since the body has a lot of energy left it will turn that energy into glycogen which is a storage form of glucose which will when neccassary will be converted into glucose from the horomone glucagon and be given to the body to be used as energy so the energy is never wasted

Both a transverse wave and a longitudinal wave have.

Answers

Answer:

Both waves are mechanical waves

A 200g air-track glider is attached to a spring. The glider is pushed in 10cm and released. A student with a stopwatch finds that 10 oscillations take 12. 0s. What is the spring constant?

Answers

The spring constant will be k= 5.5N/m for a 200g air track glider attached to a spring.

What is spring constant?

The spring constant, k, is a measure of the stiffness of the spring. It is different for different springs and materials.

Calculation for What is the spring constant

First step is to calculate the time period

T = 12 second/10

T = 1.2 second

Now let calculate the spring constant using this formula

[tex]k=\dfrac{4\pi ^2m}{T^2}[/tex]

Where,

m=0.2kg

T=1.2second

k represent spring constant=?

Let plug in the formula

[tex]k=\dfrac{4 \pi \times 0.2}{(1.2)^2}[/tex]

[tex]k=\dfrac{39.48\times 0.2}{1.44}[/tex]

[tex]k=\dfrac{7.90}{1.44}[/tex]

k=5.48 N/m

k=5.5 N/m ( Approximately)

Therefore the spring constant will be 5.5 N/m

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Ip three resistors, r1r1r_1 = 11 ωω , r2r2r_2 = 68 ωω , and r3=rr3=r, are connected in series with a 24. 0 vv battery. The total current flowing through the battery is 0. 20 aa

Answers

The three resistances are connected in series, their equivalent is equal to the addition of all the resistances. The unknown value of resistance is 1.74 ohm.

What is resistance?

The resistance is the opposition offered to the flow of current.

Given the value of resistance R₁ is 1 ohm, R₂ is 68 ohm and R₃ is R.

The total current flowing through the battery of voltage 24 V is 0.20 Amperes.

From the ohms law, The equivalent resistance is

[tex]R_{eq}[/tex] = Voltage / Current

The equivalent resistance is

[tex]R_{eq}[/tex] = R₁+ R₂+R₃

24 / 0.20 = 1+68+R

R = 1.74 ohm

The unknown value of resistance is 1.74 ohm.

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please help me

Thermal conductivity is directly proportional to ___________ and inversely proportion to ___________


ALSO WRITE IT,S FORMULA


Answers

Thermal conductivity is directly proportional to the square root of temperature and inversely proportional to the square root of the molar mass.

Formula:

K = (QL)/(AΔT),

Where,
- K is the thermal conductivity in W/m.K
- Q is the amount of heat transferred through the material in Joules/second or Watts.
- L is the distance between the two isothermal planes.
- A is the area of the surface in square meters.
- ΔT is the difference in temperature in Kelvin.

* if air is blown with a speed of 15 m/sec across the top of one side of a u-tube containing water, what will be the difference between the water levels on the two sides?

Answers

if air is blown with a speed of 15 m/sec across the top of one side of a u-tube containing water, the difference between the water levels on the two sides is 1.3 cm.

What is density?

The density is the ratio of the mass and volume of the particular object or liquid.

Applying the Bernoulli's equation across the ends of the tube A and B, we have

[tex]P_{A} = P_{B} - \dfrac{1}{2} \rho Av^{2}[/tex]

Substituting ρ = 1.2 , v = 15 and [tex]P_{B }=P_{0 }[/tex]

[tex]P_{A}= P_{B} -135[/tex]

In the left limb, [tex]P_{A}= P_{C}[/tex]

In the right limb, [tex]P_{D}= P_{o} + \rho g h[/tex]

The pressure at C and D are same.

[tex]P_{D}= P_{C}[/tex]

Substituting from the above equations , we have,

h = -1.3 cm

The height to the left limb is greater.

The difference between the water levels on the two sides is 1.3 cm.

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Where does the greatest atmospheric pressure occur.

Answers

Answer:

The atmospheric pressure is greatest at the bottom of the atmosphere. This is also where the air has its greatest density. Pressure and density decrease with height in the atmosphere. The earth's gravitational field pulls the mass of the atmosphere towards the earth's surface

The transformer in a stereo amplifier has a primary coil with 200 turns and a secondary coil with 40 turns. When the primary coil is supplied with 120-V AC, what voltage does the secondary coil provide

Answers

Answer:

Here is the answer..hope it helps:)

Which of the following is NOT a sign of extreme dehydration:
A. Severe headache
B. Dry chapped lips
C, Sweating excessively
D. Dark yellow urine

Answers

Since dehydration is due to lack of water, sweating excessively is Not a sign of extreme dehydration.

What is dehydration?

Dehydration is a condition in which the body lack a enough water necessary for metabolic activities.

Dehydration results in extreme physical conditions of the body such as fatigue.

Some signs of extreme dehydration include:

Severe headacheDry chapped lipsDark yellow urine

Therefore, sweating excessively is Not a sign of extreme dehydration.

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Explain How did Aristotle's inability to detect parallax lead him to propose a geocentric model of the solar system?​

Answers

Answer:

Aristotle was blind, therefore could not see change in positions. Aristotle could see no detectable change in the positions of the stars, thought Earth was immovable.

Explanation:

calculate the resistance of the 1000 W microwave oven that gets plugged into a 110 v outlet

Answers

The resistance of the 1000 W microwave oven that gets plugged into a 110 v outlet will be 10 ohms.

What is resistance?

Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.

The given data in the problem is;

P is the power= 1000 W

V is the voltage= 110 V

I is the current

R is the resistance

The resistance is found by the formula;

[tex]\rm P = \frac{V^2}{R} \\\\ \rm R = \frac{V^2}{P} \\\\ R = \frac{(100)^2}{10000} \\\\ R= 10\ ohm[/tex]

Hence, the resistance value will be 10 ohms.

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Which is true about natural resources and conflict?

A.Natural resources in the past led to conflict, but not anymore.

B.Nonrenewable resources such as fossil fuels can lead to conflict, but renewable resources such as water will not.

C.Conflict often occurs over natural resources.

D.Expensive resources such as rare minerals can lead to conflict, but relatively inexpensive resources such as water will not.

Answers

Answer:

C.Conflict often occurs over natural resources.

Explanation:

Conflict always occurs if two countries or groups fight over anything that both think is theirs.

UN seems to agree: https://peacekeeping.un.org/en/conflict-and-natural-resources

How much energy is contained in a particle that has a mass of 1x10^-9 kg?

Answers

E = mc²

E = 1 x 10⁻⁹ x (3.10⁸)²

E = 9 x 10⁷ J

Help is appreciated!! :D
Explain the thermodynamics of a heat engine.

Answers

Answer:

See below ~

Explanation:

What is Thermodynamics ?

Thermodynamics is the branch of science which deals with heat and other forms of energy. Main key terms in this topic include : work, temperature, entropy, etc.

===============================================================

Working of a Heat Engine :

The function of a heat engine is to convert heat into mechanical energy.

It does this by bringing a working substance from a higher state temperature to a lower state temperature.

=============================================================

Formula for calculating the efficiency of a heat engine :

[tex]e_{max} = W_{max} / Q_{max}[/tex]

Explain the thermodynamics of a heat engine.

- Thermodynamics can be applied to many physical systems, as long as the exchange of energy with the medium is known, regardless of the details of the interactions in those systems.

How much work done if an object is moving to the right and a force of 75. 0n is applied at 125 degrees to the motion while the object travels 7. 50m

Answers

Answer:

-322.64 J

Explanation:

75 N  * cos 125     *    7.5   =  -322.64 J

an example of inertia is when your body flies forward when you slam on the breaks.

a,true
b,false

help :​

Answers

Answer:

A True ( I Think Its True I'm Not Intirely sure)

Explanation:

Answer:

true

Explanation:

True.....when you apply the brakes to slow down, your body's inertia wants ot keep moving forward

A known volume of ideal gas is contained in a cylinder fitted with a piston and held at constant pressure. If the temperature changes from 25oC to 200 oC, by what factor does the volume change

Answers

Considering the Charles's Law, the volume change by a factor of [tex]\frac{473 }{298 }[/tex] or 1.587.

What is Charles's Law

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain amount of ideal gas, which is maintained at a constant pressure, by means of a proportionality constant that is applied directly.

In other words, Charles' law states that the volume is directly proportional to the temperature of the gas: if the temperature increases, the volume of the gas increases: while if the temperature of the gas decreases, the volume decreases.

Mathematically, Charles's law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Considering an initial state 1 and a final state 2, it is true that:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

This case

In this case, you know:

T1= 25 °C= 298 KT2= 200 °C= 473 K

Replacing in Charles's law:

[tex]\frac{V1}{298 K} =\frac{V2}{473 K}[/tex]

Solving:

V2=[tex]473\frac{V1}{298 K}[/tex]

V2=[tex]\frac{473 K}{298 K}V1[/tex]= 1.587 V1

Finally, the volume change by a factor of [tex]\frac{473 }{298 }[/tex] or 1.587.

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What wave on the electromagnetic spectrum has the highest frequency?

Answers

Answer:

Explanation:

Answer: Gamma rays

Gamma rays have the highest frequency.

What is an electromagnetic wave?

An electromagnetic wave requires no medium for its propagation.

It consists of a spectrum of different wavelengths.

Different wavelengths of rays have different energies and different frequencies.

Higher frequency rays have the highest energies.

What is gamma-ray?

These are ionized radiations.

Gamma radiations are obtained from the decay of the atomic nucleus.

It has the highest frequency which is why it can penetrate through matter.

It has the smallest wavelength and highest energy.

The frequency of gamma rays is more than 10^19 cycles per second and wavelength less than 100 picometers.

Answer:

Gamma Rays

Explanation:

Each part of the electromagnetic (EM) spectrum comprises photons with distinct energy levels, wavelengths, and frequencies. Gamma rays are the most energetic, have the shortest wavelengths, and have the highest frequencies.

The trait for flower color in a plant has red and white alleles. The red color is the dominant trait. What is the phenotypic ratio for a cross between plants with red (Rr) flowers and red (Rr) flowers?

4 red : 0 white
3 red : 1 white
2 red : 2 white
1 red : 1 white

Answers

Answer:

1.4 red : 0 white

Explanation:

Answer: A

Explanation:

Which statement best describes how ultrasound can produce an image?

Answers

Answer:

Choice D

Explanation:

Choice A is incorrect because the sound waves do not form within the body.

Choice B is incorrect because the sound waves echo back, they are not measured on the other side.

Choice C is incorrect because it states that the sound waves bounce off the body. They actually bounce off tissues inside the body, among other things.

it’s d he’s right so yeah

A sample of oxygen gas with a volume of 3.0 m3 is at 100 C. The gas is heated so that
it expands at a constant pressure to a final volume of 6.0m^3 what is the final temperature of the gas?

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

According to Charles law, if pressure remains constant, volume varies directly with temperature. so we can infer that :

[tex] \qquad\sf{\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}} [/tex]

So, we can use this formula to find out the final temperature of the gas ~

Note : Take temperature in Kelvin ( 100°C = 373 K )

[tex]\qquad \sf  \dashrightarrow \: \dfrac{3}{373} = \dfrac{6}{x} [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = \dfrac{6}{3} \times 373 [/tex]

[tex]\qquad \sf  \dashrightarrow \: x = 2 \times 373[/tex]

[tex]\qquad \sf  \dashrightarrow \: x =74 6 \: K[/tex]

Now, convert it to Celsius ~

i.e 746 - 273 = 473° C

So, the final temperature of the gas will be equal to 473° C

An electromagnetic wave has a wavelength of 1.5x10⁻⁵ m. What is its frequency?

Answers

Answer:2x10^13Hz

Expllanation:In the space, c=3x10^8m/s
c=λf
f=c/λ=(3x10^8m/s)/(1.5x10^(-5)m)=2x10^13Hz

Answer:

The frequency is =2⋅10 18 H z

Explanation:

Apply the equation

Frequency

×

Wavelength

=

Speed

f

×

λ

=

c

The wavelength is

λ

=

1.5

10

10

m

The speed is

c

=

3

10

8

m

s

1

The frequency is

f

=

c

λ

=

3

10

8

1.5

10

10

=

2

10

18

H

zApply the equation

Frequency

×

Wavelength

=

Speed

f

×

λ

=

c

The wavelength is

λ

=

1.5

10

10

m

The speed is

c

=

3

10

8

m

s

1

The frequency is

f

=

c

λ

=

3

10

8

1.5

10

10

=

2

10

18

H

z

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