Which option best describes electromagnetic waves that have enough energy to change atoms or molecules into ions?

A. Waves with low frequency
B. Ionizing radiation
C. Waves with long wavelength
D. Non-ionizing radiation​

Answer:

Temporary, permanent and Electromagnet.

Explanation:

The three type of magnets are:

Answer:

Normative social influence

Explanation:

:Normative social influence

The period of the simple harmonic oscillator is 2.00 s, the frequency is 0.500 Hz, and the corresponding angular velocity is 3.14 rad/s. The motion of a person swinging on a swing can be modelled as a simple harmonic oscillator.

The period, frequency, and angular velocity of the simple harmonic oscillator can be determined from the length of the swing and the acceleration due to gravity.

Let's calculate the period, frequency, and angular velocity of the simple harmonic oscillator in this problem. The period of a simple harmonic oscillator can be calculated using the following formula:

\(T = 2π√(l/g)\), where l is the length of the pendulum and g is the acceleration due to gravity.

The length of the pendulum can be determined as follows: Length of pendulum = Distance from pivot point to center of gravity of the person= 2.00 m. The acceleration due to gravity is approximately 9.81 m/s^2, so the period of the simple harmonic oscillator is

:\(T = 2π√(l/g)\)

= 2π√(2.00/9.81) = 2.00 s

The frequency of the simple harmonic oscillator is given by:

f = 1/T

= 1/2.00

= 0.500 Hz (correct to 3 significant figures)

The corresponding angular velocity is given by:

ω = 2πf

= 2π(0.500)

= 2π(0.500)

= 3.14 rad/s (correct to 3 significant figures)

Therefore, the period of the simple harmonic oscillator is 2.00 s, the frequency is 0.500 Hz, and the corresponding angular velocity is 3.14 rad/s.

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Answer:

Explanation:

mass, m = 500 kg

initial velocity, u = 36 km/h = 10 m/s

final velocity, v = 0

distance, s = 40 m

\(v^{2} = u^{2} + 2as\)

\(0^{2} = 10 ^{2} +\) 2 × a × 40

0 = 100 + 80 a

- 80a = 100 - 0

-80a = 100

a = -100 / 80

a = -1.25 m/\(s^{2}\)

force, f = ?

mass = 500 kg

acceleration = -1.25 m/s^2

f = ma

= 500 × -1.25

= -625 N

Hope this helps

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Mass= spring constant× elongation/acceleration due to gravity.

As part a asks how one can find out unknown masses if one has a spring of known spring constant then it can be done by initially measuring the original length of spring and then connecting to spring to the weight whose mass is to be calculated.

The spring will elongate due to the weight and we have to carefully measure elongated length of spring. Since this is a part where human error chances are very high so it is preffered for one to take multiple measurements to get as accurate value as possible.

Then the difference is to be taken between the elongated length of spring and the original length of spring. This difference is called elongation. And the formula to measure mass of the weight used will be,

Mass= spring constant× elongation/acceleration due to gravity.

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The observations of the aurora borealis and the alignment of the compass needle indicate that Earth has a magnetic field, which is likely generated by the presence of a molten iron outer core.

The given information about the aurora borealis (northern lights) and the compass needle aligning itself to Earth's magnetic poles can provide some insights into Earth's interior.

Aurora Borealis: The aurora borealis is a natural light display that occurs in the polar regions, predominantly in the Arctic. It is caused by the interaction between charged particles from the Sun and Earth's magnetic field.

This phenomenon suggests that Earth has a magnetic field surrounding it, which is crucial in deflecting the charged particles and causing them to interact with the atmosphere, resulting in the beautiful display of lights. The presence of the magnetic field indicates the existence of a molten iron outer core within Earth's interior.

Compass Needle: The compass needle aligns itself with Earth's magnetic poles, pointing towards the North and South magnetic poles. This indicates the presence of a magnetic field that is generated within Earth.

The behavior of the compass needle suggests the existence of a magnetic dynamo process in Earth's core. This dynamo process is thought to be driven by the movement of molten iron in the outer core. It generates electric currents, which, in turn, create Earth's magnetic field.

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Answer:

Explanation:

The density of gold is 19.3 g/cm³. Thus, you can determine the density of the unknown cube by doing the following. Get a measuring cylinder (marked in cm³) that contains a certain volume of water (preferably above average but not close to been filled up). Get a weighing balance (that can read in grams) also.

Measure the mass of the unknown stone (using the weighing balance) and record. Take the initial volume of the water in the measuring cylinder and record (in cm³) and then drop the unknown stone inside the measuring cylinder gently (avoid splashes). Record the final volume of the cylinder after the unknown stone was dropped.

Then calculate the density of the stone by using the formula; mass ÷ change in volume

The change in volume can be determined by; Final volume - initial volume

If the answer obtained from the calculation (of the density of the stone) is not around 19.3 g/cm³ (say 19.3 ± 0.2), then the stone is not gold but if it is around 19.3 g/cm³, then the stone is gold.

Answer:

Correct Answer: Option B

Explanation:

Explanation

P1/T1 = P2/T2

80/(273+47) = P1/(273+27) = 75Nm-2

Answer: 75.0 Nm^-2

Explanation:

P1/T1 = P2/T2 80/(273+47) = P1/(273+27) = 75Nm-2

The given statement is false because the direction of the electric field indicates the direction of the force on a positive test charge, not its motion.

The given statement is actually false. The direction of the electric field e with a rightwards arrow on top indicates the direction in which a positive test charge would move if it was placed at that point in space. This is because the electric field is defined as the force per unit charge that a test charge would experience if it was placed at that point in space.

The direction of the electric field is therefore the direction of the force that a positive test charge would experience if it was placed at that point in space.

The direction of the electric field is not necessarily perpendicular to the direction of motion of a positive test charge. This depends on the direction of the electric field and the direction of motion of the test charge.

The motion of a positive test charge is determined by the direction and magnitude of the force acting on it, which is proportional to the electric field and the charge of the test charge.

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A student is creating an electromagnet for an investigation, and the one feature of the electromagnet that will have the least influence on the magnetic force is the brand of the battery, which is the last option.

The magnetic force of an electromagnet is determined by a number of factors, such as the material of the core and the number of wire coils, and the size of the power source but the brand of the battery don't have an effect on the magnetic force of the electromagnet as long as the battery provides the necessary voltage and current to power the electromagnet.

Hence, the one feature of the electromagnet that will have the least influence on the magnetic force is the brand of the battery, which is the last option.

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Answer:

eu acho que ê a B

uma bela noite abençoada

Answer:

The answer is "B" table salt

Good look

Explanation:

Answer:

Explanat      Enthalpy of Vaporizationion:

Interstellar is a movie about the human race being faced with a

civilization ending blight. A small group of brave individuals explore

possible new habitable worlds for humans. The following questions

will help guide you through the movie and hopefully get you

thinking about the future.

1. The Cooper family hijacks a UAV (Unmanned Aerial Vehicle).

What do you know about UAVs and how they are used today?

2. While at the parent-teacher conference, Murphy’s teacher

mentions that the Apollo program -- the same program that

landed humans on the Moon -- was just propaganda to

convince the Soviet Union to bankrupt themselves trying to do

the same. The reason for this was to encourage children to

take care of their own planet, rather than wasting precious

resources day dreaming of leaving it. Which side of the fence

would you sit on? Would you look for ways to save Earth and

our ability to stay there, or would you look to the sky, and find

a new planet to live on? Why?

3. A) What natural disaster(s) is Earth suffering from in the beginning of Interstellar?

B) If one of these happened now what actions would you take to protect yourself?

4. Cooper, Doyle, Romilly, and Dr. Brand (female) rendezvous with the Endurance in orbit around Earth. Once

onboard, they begin to spin the Endurance. Why? (Think about the physics happening here!) Draw a diagram.

5. Why or why isn’t space exploration important for the people in the movie interstellar? Why or why isn’t

space exploration important in today’s society? Defend your answers.

6. Explain time dilation as best as you can.

7. A) Estimate how long Dr. Mann went without human contact while on the ice planet:

The Lazarus mission was __________ years ago. It takes _______ years to get to Saturn from Earth. Cooper

and Dr. Brand were on Miller’s planet for approximately __________ years. This means the total time Dr.

Mann went without human contact is: ___________ years.

B) Consider the longest time away from human contact you've experienced. What did you do to keep yourself

occupied?

Useful Vocabulary

Blight: A specific symptom affecting plants in

response to infection by a pathogenic organism. The

potato famine of Ireland was caused by blight.

Event horizon: Is a point in which not even light can

escape the gravitational influence of the black hole.

Maroon: The intentional action of leaving someone

in a remote area such as an inhabitable island.

Rendezvous: When two objects meet and typically

dock together while in space.

Time dilation: A difference of elapsed time between

two events as measured by observers either moving

relative to each other or differently situated from

gravitational masses.

UAV: Unmanned Aerial Vehicles are remote

controlled or autonomous flying vehicles.

Unmanned aerial vehicles (UAVs) are typically used for a variety of purposes such as:

An unmanned aerial vehicle (UAV) is also referred to as a drone and it can be defined as an aircraft that is designed and developed to be piloted or controlled by a remote control (ground-based controller) and on-board computer systems.

This ultimately implies that, an unmanned aerial vehicle (UAV) is a class of aircrafts that can fly without any human pilot, cabin crew, or passengers on board.

In conclusion, unmanned aerial vehicles (UAVs) carries no human pilot and are typically used for a variety of purposes such as:

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The time period of most time drafts ranges from 10 days to 60 days. So option b is correct.

Time drafts are a type of short-term credit used to finance international transactions. The buyer is given a certain amount of time to pay for the goods, usually between 10 and 60 days. This gives the buyer time to sell the goods and generate the cash to pay for them.

The other options are not as common for time drafts. A time draft of 1 year to 5 years would be considered a long-term loan, and a time draft of 2 weeks to 52 weeks would be considered a regular invoice.Therefore option b is correct.

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With a temperature change of 31°C, the mercury column's height changes by 0.0106 cm.

As the temperature rises, the mercury will expand in the capillary tube, increasing its volume. V = VT = (1.8*10-4 (oC)-1)(0.100 cm3)(20 oC) = 3.6*10-4 cm3 = 0.36 mm3, or the formula V = VT.

\(A1 * h1 = A2 * h2\)

\(A1 = πr1^2 = π(0.005 cm/2)^2 = 7.85 × 10^-5 cm^2\)

The cross-sectional area of the bulb is:

\(A2 = πr2^2 = π(0.31 cm/2)^2 = 0.0755 cm^2\)

\(ΔV = V0 * β * ΔT\)

\(V0 = A1 * h1\)

\(h2 = (A1/A2) * h1 + (ΔV/A2)\)

\(h2 = (7.85 × 10^-5 cm^2)/(0.0755 cm^2) * h1 + (0.000182 (°C)^-1 * 31°C *\) 7.85 × \(10^-5 cm^2)/(0.0755 cm^2)\)

\(h2 = 0.0106 h1 + 0.00000122 cm\)

\(Δh = h2 - h1 = 0.0106 h1 + 0.00000122 cm - h1 = 0.0106 cm\)

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Answer:

It means that 400 J of heat is the required amount to raise or lower thh temperature of a 1kg piece of copper

Explanation:

390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C

From the given information,

The specific heat capacity of copper is 390 J/Kg °C. To determine what this means, we will define the term specific heat capacity.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kg of the substance by 1 °C.

Therefore, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

Hence, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

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The "weight" of an object can be determined by multiplying its mass by the acceleration due to gravity of the Earth. The acceleration due to gravity on Earth is around 9.81 m/s².

Therefore, the weight of the space lander on Earth would be:Weight = Mass x Acceleration due to gravity= 600 kg x 9.81 m/s²= 5886 N (newtons)What is the "weight" of this space vehicle on Venus itself?The weight of the space lander on Venus can be determined using Newton's Law of Gravitation. Newton's Law of Gravitation states that every point mass in the universe attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. F = G x (m₁m₂/d²)where F is the force of gravity G is the gravitational constant (6.67 x 10^-11 Nm²/kg²)m₁ is the mass of the first objectm₂ is the mass of the second objectd is the distance between the centers of the two objects Using the given values;Mass of space lander, m₁ = 600 kg

Mass of Venus, m₂ = 4.867 x 10²⁴ kg Diameter of Venus = 12,100 km or 1.21 x 10^7 meters (distance between the centers of the two objects)G = 6.67 x 10^-11 Nm²/kg²

F = ((m₁m₂)/d²) x G= (600 x 4.867 x 10²⁴)/(1.21 x 10^7)² x 6.67 x 10^-11

= 2364.19 N

Therefore, the weight of the space lander on Venus would be approximately 2364.19 N (newtons).

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The length of a simple pendulum is 0.760 m, the pendulum bob has a mass of 365 grams, and it is released at an angle of 12.0 degree to the vertical. The frequency of vibration is approximately 0.364 Hz. The speed of the pendulum bob at the lowest point is not directly provided in the given information, but the total energy stored in the oscillation is approximately 0.394 J.

To determine the frequency of vibration, speed at the lowest point, and total energy stored in the oscillation of the pendulum, we can use the given information and formulas related to pendulum motion.

Given:

Length of the pendulum (L) = 0.760 m

Mass of the pendulum bob (m) = 365 grams = 0.365 kg

Angle to the vertical (θ) = 12.0 degrees

   Frequency of Vibration:

   The frequency of vibration (f) of a simple pendulum can be calculated using the formula:

f = 1 / T

where T is the period of oscillation. The period can be determined using the formula:

T = 2π√(L/g)

where g is the acceleration due to gravity (approximately 9.8 m/s^2).

Plugging in the values:

T = 2π√(0.760 m / 9.8 m/s^2)

T ≈ 2.746 seconds

Now, calculating the frequency:

f = 1 / 2.746 seconds

f ≈ 0.364 Hz

Therefore, the frequency of vibration is approximately 0.364 Hz.

   Speed at the Lowest Point:

   The speed (v) of the pendulum bob at the lowest point of its swing can be determined using the conservation of mechanical energy. At the lowest point, all of the potential energy is converted into kinetic energy.

The potential energy at the highest point (when the pendulum is released) is given by:

PE = mgh

where h is the vertical distance from the highest point to the lowest point.

Since the pendulum bob is released at an angle of 12.0 degrees to the vertical, the vertical distance is h = L(1 - cos θ), where θ is the angle.

Plugging in the values:

h = 0.760 m(1 - cos 12.0 degrees)

h ≈ 0.056 m

PE = (0.365 kg)(9.8 m/s^2)(0.056 m)

PE ≈ 0.197 J

The kinetic energy (KE) at the lowest point is equal to the potential energy:

KE = 0.197 J

The total mechanical energy (E) is the sum of potential and kinetic energy:

E = PE + KE

E = 0.197 J + 0.197 J

E ≈ 0.394 J

Therefore, the speed of the pendulum bob at the lowest point is not directly provided in the given information, but the total energy stored in the oscillation is approximately 0.394 J.

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D. The efficiency of the ramp is 54.6 %.

V.R = distance moved by effort/distance moved by load = L/h

V.R = (6.12)/(1.53) = 4

M.A = Load/Effort

M.A = (451 x 9.8)/(2025)

M.A = 2.183

E = (M.A / V.R) x 100%

E = (2.183 / 4) x 100%

E = 54.6 %

Thus, the efficiency of the ramp is 54.6 %.

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The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:1. Width of the slit. 2. Distance between slits. 3. Distance between slits and screen. 4. Wavelength of the incident light. 5. Refractive index of the medium.

The factors that can change the pattern observed on a screen during Young's double-slit experiment are given below:

1. Width of the slit. The width of the slit can influence the diffraction pattern that is observed on a screen. When the width of the slit decreases, the central maximum of the diffraction pattern becomes broader, and the intensity of the secondary maxima reduces.

2. Distance between slits. The distance between the slits in the double-slit experiment also affects the pattern on the screen. The distance between the slits is equal to the spacing between the maxima. If the spacing between the slits decreases, the distance between the maxima decreases, and vice versa.

3. Distance between slits and screen. The distance between the slits and the screen is also a factor that can affect the diffraction pattern. When the distance increases, the spacing between the maxima becomes wider, and the intensity of the maxima decreases.

4. Wavelength of the incident light. The wavelength of the incident light is another factor that affects the diffraction pattern on the screen. When the wavelength increases, the spacing between the maxima increases, and vice versa.

5. Refractive index of the medium. The refractive index of the medium in which the light travels can also influence the diffraction pattern observed on a screen.

When the refractive index of the medium changes, the position of the maxima changes as well. These are the factors that can change the pattern observed on a screen during Young's double-slit experiment.

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Answer:

4

Explanation:

because when u have 5 then take 1 away u have 4

In a low-pressure chiller, air and other non-condensable gases can collect in the upper portion of the chiller, typically in the condenser.

Non-condensable gases are gases that are not able to be condensed into a liquid state under normal operating conditions. These non-condensable gases can have a negative impact on the performance of the chiller. They can reduce the cooling capacity of the chiller, increase energy consumption, and cause corrosion in the system.

Therefore, it is important to regularly remove non-condensable gases from the chiller to maintain optimal performance and prevent damage to the system. This is typically done through a process called purging, which involves removing the non-condensable gases from the chiller and replacing them with the proper refrigerant.

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When Albert has an impulse of 29-newton seconds and an impact time of 12 seconds. then the force experienced is 2.4166 N

The product of the average applied force and the time for which it is exerted is known as an impulse.

the mathematical relation for impulse is

Impulse  = F * Δt

where F represents the force applied and Δt represents the time for which the force is applied

As given in the problem Albert has an impulse of 29-newton seconds and an impact time of 12 seconds

By using the formula for impulse

Impulse  = F * Δt

By substituting the respective values in the formula

29 = F×12

F = 2.4166 N

Thus, when Albert has a 29-newton-second impulse and a 12-second impact time. then 2.4166 N of force was applied.

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Answer:

yes Compression and rarefaction are commonly used with longitudinal waves. And Crests and trough are commonly used with transverse waves!

Explanation:

Answer:

A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).

Explanation:

Answer:

10:30am ........................

Answer:

maybe around 10:30 I would say

Answer:

it gravitional pull on earth will increased becauste it is compress to a form of moon which is comperatively smaller so the gravitonal pull on per cm of earth will incrased so we can say that there will be change in acceleration due to gravity

a ) When they reach the ground, rock B has greater velocity.

b ) Both rocks have the same acceleration

c ) Rock A and Rock B arrives at the same time

According to law of conservation of energy,

1 / 2 m u² + m g hi = 1 / 2 m v² + m g hf

u = 0

hf = 0

m g hi = 1 / 2 m v²

v = √ ( 2 g / m ) √ hi

v ∝ √ hi

a ) hi of rock A will be higher because it reaches a certain height above the ground which will be considered as initial height for rock A. So, the final velocity of rock A is higher.

b ) Both the rock are affected by only the force of gravity. So they will have the same acceleration of 9.8 m / s²

c ) If air resistance is ignored,

s = u t + 1 / 2 at²

For an object that is dropped,

u = 0

a = g

s = at² / 2

t = √ ( 2 s / g )

It can clearly be seen that no matter what height an object might be dropped from, if air resistance is ignore they will fall at the same time.

Therefore,

a ) When they reach the ground, rock B has greater velocity.

b ) Both rocks have the same acceleration

c ) Rock A and Rock B arrives at the same time

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