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. copper and dr. brand were on miller’s planet for approximately _____ years. this means that the total time dr. mann went without human contact is: _____ years.

Ionizing radiation: Gamma rays, X-Rays

Nonionizing radiation: Microwaves, Radio frequencies, Infrared radiation from an electric heater or remote control

Ionizing radiation refers to radiation with sufficient energy to remove tightly bound electrons from atoms, causing ionization. Gamma rays and X-rays fall into this category as they have high energy levels capable of ionizing atoms and molecules.

Nonionizing radiation refers to radiation with lower energy levels that do not have enough energy to ionize atoms. Microwaves, radio frequencies, and infrared radiation from an electric heater or remote control are examples of nonionizing radiation. While they can still have heating or electromagnetic effects, they do not possess enough energy to cause ionization of atoms or molecules.

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The intensity of sound can be calculated using the formula: Intensity (I) = Power (P) / Area (A).Plugging in the given values, we have: Intensity (I) = 8.8 × 10^-4 W / 5.0 m^2.

Calculating this expression gives us an intensity of 1.76 × 10^-4 W/m^2.

Therefore, the correct answer is: 1.6 × 10^-4 W/m^2.

The intensity of sound represents the amount of power per unit area. It is calculated by dividing the power of the sound wave by the area through which it is passing. In this case, the given power is 8.8 × 10^-4 W, and the area is 5.0 m^2. Dividing the power by the area gives us an intensity of 1.76 × 10^-4 W/m^2.

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Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

To estimate the distance you can travel in 4 hours and 50 minutes at an average speed of 41 miles per hour, we need to convert the time to hours.

4 hours and 50 minutes is equivalent to 4.83 hours (since 50 minutes is 50÷60 = 0.83 hours).

Now, we can calculate the distance traveled using the formula: distance = speed × time.

Distance = 41 miles/hour × 4.83 hours

Distance ≈ 198.03 miles

Rounding to the nearest mile, the estimated distance you can travel is approximately 198 miles.

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There are three states of matter.

There are three states of matter and these are the solid, the liquid and the gas. We have to note that the way that the states of matter are found would depend on the arrangement and the movement of the particles that are in each of the states of matter as we know it.

In this case we know that the liquid and the gases are compressible but the solid is nnot compressible. The sold has a fixed shape but the liquid and the gas does not. The liquid and the solid have a definite volume but the gas does not.

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The depth of penetration of the 100kg projectile into the ground is 5.09 meters.

How does the height of release affect the depth of penetration?

The height of release affects the depth of penetration in that a higher release point will result in a higher initial velocity for the projectile. This in turn will cause a deeper penetration into the ground upon impact.

The depth of penetration of the 100kg projectile into the ground can be calculated using the following formula:

d = (v^2)/(2g), where v is the velocity upon impact and g is the acceleration due to gravity.

Assuming no air resistance, the velocity upon impact can be calculated as v = √(2gh) = √(2 * 9.8 * 100) = 44.72 m/s.

Plugging in this value into the formula gives d = (44.72^2)/(2 * 9.8) = 508.57 cm or 5.09 meters.

However, the exact depth will also depend on other factors such as the mass of the projectile and the resistance of the ground.

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Answer:

a. V = (a - b)d/2ε₀ b. 2ε₀A/d

Explanation:

a. The potential difference between the plates

Using Gauss' law, we first find the electric field between the plates

ε₀∫E.dA = Q where Q = charge enclosed, E = electric field

Now Q = [a +(-b)]A = (a - b)A where + a and -b are the surface charge densities of the plates and A is the area of the plates.

ε₀∫E.dA = Q

ε₀∫EdAcos0 + ε₀∫EdAcos0 = (a - b)A

ε₀E∫dA + ε₀E∫dA = (a -b)A

ε₀EA + ε₀EA = (a -b)A

2ε₀EA = (a -b)A

E = (a - b)/2ε₀

We now find the potential difference, V between the plates from

V = ∫E.dl

V =E∫dl

V = Ed  where ∫dl = d the distance between the plates.

V = (a - b)d/2ε₀

b. The capacitance between them

Capacitance C = Q/V

= (a - b)A ÷ (a - b)d/2ε₀

= 2ε₀A/d

The force that causes the protons in an atom to be attracted to one another is Strong nuclear.

Nuclear force is a force that acts between the protons and neutrons of atoms.

Neutrons and protons, both nucleons, are affected by the nuclear force almost identically and it is responsible for the attraction of protons in an atoms.

Thus, the force that causes the protons in an atom to be attracted to one another is Strong nuclear.

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Answer:

When insulating materials rub against each other, they may become electrically charged . The material that gains electrons becomes negatively charged The material that loses electrons is left with a positive charge

Explanation:

If the instantaneous power waveform for a circuit has unequal positive and negative areas, it indicates that energy is being transferred back and forth between the circuit components.

The positive area of the waveform represents energy being transferred into the circuit, while the negative area represents energy being transferred out of the circuit. If the positive and negative areas are unequal, it means that more energy is being transferred in one direction than the other, and this can have implications for the operation of the circuit and its components.

This unequal transfer of energy can indicate a number of things, such as an unbalanced load, a misaligned phase in a three-phase system, or a problem with the efficiency of the circuit components.

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Answer:

at max height you potential energy is highest

Explanation

At your maximum height, your potential energy is highest.  

And at your exact peak, your kinetic energy is zero, which is the lowest it can ever be.

Answer:

152,155 J

Explanation:

115,333 + 36,822 = 152,155J

Answer:

Loyalty-Being loyal is important to being a good citizen because it shows that you acknowledge the effort others have put in to what you are doing and it shows that you enjoy what you are doing. Loyalty is important to a productive community because it promotes good work and effort

Explanation:

Answer:

Several cm of lead

Explanation:

The heat lost by water is equal to the heat gained by ice here. The heat lost from water for a temperature change of 25 to 10 degree Celsius is 12300 J.

Calorimetry is an analytical technique used to determine the heat energy absorbed or evolved by a system. The calorimetric equation relating the heat energy q with the mass m, specific heat c and the temperature difference ΔT is :

q = m c ΔT

Here, the heat energy gained by the dry ice is equal to the heat lost from water.

temperature difference for water = 25- 10 °C = 15°C

thus, 15°C is lost from water.

mass of water = 200 g

q =200 g × 4.12 J/°C g × 10°C = 12300 J

Therefore, the heat energy lost from water is 12300 J.

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Destructive interference occurs when two waves with opposite amplitudes meet and cancel each other out, resulting in a wave with zero amplitude. This statement is true.

In this scenario, a pulse with an amplitude of +5 units meets a pulse with an amplitude of -5 units. When these two pulses interfere, they will create destructive interference, causing the resulting wave to have zero amplitude.
Therefore, the statement "destructive interference occurs when a pulse with an amplitude of +5 units interferes with a pulse with an amplitude of -5 units" is true.
Destructive interference is a phenomenon that occurs when two waves meet and their amplitudes are opposite. In this case, we have two pulses, one with an amplitude of +5 units and another with an amplitude of -5 units. When these pulses meet, they will interfere with each other.
The interference of two waves can be either constructive or destructive. Constructive interference occurs when two waves meet and their amplitudes are in the same direction, resulting in a wave with an amplitude that is greater than either of the individual waves.

In contrast, destructive interference occurs when two waves meet and their amplitudes are in opposite directions, resulting in a wave with an amplitude of zero.
In the scenario presented in the question, the pulse with an amplitude of +5 units meets the pulse with an amplitude of -5 units. These two pulses have opposite amplitudes, which means they will interfere destructively. This destructive interference will result in a wave with zero amplitude.
he statement "destructive interference occurs when a pulse with an amplitude of +5 units interferes with a pulse with an amplitude of -5 units" is true.

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Answer:

20mA

Explanation:

because it is connected in series with the ammeter

The current through the 40Ω resistor in the given circuit is 20mA, which is explained below.

The volate across resistor R is 1V, as indicated by the voltmeter.

Since the potential of the battery is 3V, according to Kirchoff's voltage law, the voltage drop across 20Ω resistors must be 1V each since they are indentical.

Let a total current I passes through 20Ω resistor as it is connected to the battery in series. From Ohm's law:

20Ω × I = 1V

I = 50mA

Now the current indicated by the ammeter is 20mA which splits according to the reistors of 15Ω and 30Ω which are connected in parallel. Then again the current adds up to 20mA when leaving the set of parallel resistors, through the 40Ω resistor.

So the current through the 40Ω resistor is 20mA

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Explanation:

distance = speed x time

a- d= 350 m/s x 30s

   d= 10500m

b- 5 mins = 300 sec

    d= 350 m/s x 300s

    d= 105000 m

c-  30 mins = 1800 sec

    d= 350 m/s x 1800 s

   d=  630000 m

The vast majority of pulsars are known only from their pulses in radio waves. While pulsars emit radiation across the electromagnetic spectrum, it is primarily the radio waves that have been widely used for their detection.

Pulsars are highly magnetized, rotating neutron stars that emit beams of electromagnetic radiation, including radio waves, X-rays, and gamma rays. These beams of radiation are detected on Earth as regular, periodic pulses, giving pulsars their name.

While pulsars emit radiation across the electromagnetic spectrum, it is primarily the radio waves that have been widely used for their detection. Radio telescopes are sensitive to the long-wavelength radio emissions from pulsars, allowing astronomers to observe and study their pulsating signals.

The detection and identification of pulsars are primarily based on the analysis of their radio wave pulses. Astronomers search for periodic signals in the radio data, looking for distinctive patterns that indicate the presence of a pulsar. By analyzing the timing and characteristics of the pulses, astronomers can determine various properties of the pulsar, such as its rotation period, magnetic field strength, and sometimes even its motion and distance.

Therefore, the vast majority of pulsars are known only from their pulses in radio waves, as these have been the most commonly observed and studied emissions from pulsars.

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The mass of the object would be 58.4 kg.

The problem can be solved using Newton's second law of motion, which states that the net force (F_net) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a):

F_net = m*a

We are given that the net force acting on the object is 328 N, and we know the object's acceleration from the change in velocity over time:

a = (final velocity - initial velocity) / time

a = (18 m/s - 0 m/s) / 3.2 s

a = 5.625 m/s^2

Substituting these values into the equation for Newton's second law, we get:

328 N = m * 5.625 m/s^2

Solving for m, we get:

m = 328 N / 5.625 m/s^2

m ≈ 58.4 kg

Therefore, the mass of the object is approximately 58.4 kg.

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Answer:

time bc speed uses time

Explanation:

hope it helps♡ ;)

An object is accelerating if there is a change in speed and there is a change in direction, therefore the correct answer is option A.

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

Even if the magnitude of the velocity not changing even the change in the direction would lead to acceleration,

uniform circular motion is one of the best examples where the speed is constant but the direction is changing continuously

Thus, An object is accelerating if there is a change in speed and there is a change in direction, therefore the correct answer is option A.

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ANSWER:

39.21 km

STEP-BY-STEP EXPLANATION:

To determine the answer we track each move just like this:

Coordinates at the start (city A): (0, 0)

Coordinates after going 30 km north: (0, 30)

Coordinates after going 50 km west: (-50, 30)

Southeast is a move down and to the right of 45°, so we calculate at each coordinate, like this:

We calculate the distance between both points as follows:

The distance between both cities is 39.21 km

Answer:

The answer is 2,500 * 45 = 112500kgm/s

If a person weighs 670 N on Earth, their weight on the surface of a neutron star that has the same mass as our sun and a diameter of 16.0 km would be 9.26 x 10^12 N.

To find out, we'll need to use the formula for surface gravity: g = (GM)/r²

where: g is surface gravity in N/kg, G is gravitational constant in Nm²/kg², M is the mass in kilograms, r is the radius in meters.

First, we'll need to find the mass of the neutron star using the mass of the sun, which is Ms = 1.989 x 10³⁰ kg.

M = Ms = 1.989 x 10³⁰ kg

The radius of the neutron star is 16.0 km or 16,000 m. r = 16,000 m

Now we can plug these values into the surface gravity formula:

g = (GM)/r²g = [(6.674 x 10^-11 Nm²/kg²)(1.989 x 10³⁰ kg)]/(16,000 m)²g = 1.15 x 10^12 N/kg

Finally, to find the weight of the person on the surface of the neutron star, we'll multiply their mass by the surface gravity:

weight = mgweight = (670 N)/(9.81 m/s²)weight = 68.27 kg

weight on neutron star = (68.27 kg)(1.15 x 10^12 N/kg)

weight on neutron star = 9.26 x 10^12 N

Therefore, the weight of the person on the surface of a neutron star that has the same mass as our sun and a diameter of 16.0 km would be 9.26 x 10^12 N.

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Answer:

The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization.

Answer:

temperature inside the balloon so it is warmer than the surrounding air

Explanation:

For the balloon to get an uplift , it should be lighter than air . That means the density of the gas inside should be less than the density of air outside . only then ,  weight of the balloon plus the weight of the air inside balloon  will become less than the weight of displaced air outside . This can be achieved by warming up the air inside. Its temperature must exceed that of outside air.

The option that best explain how the pilot can make the balloon rise is option D. The pilot can increase the temperature inside the balloon so it is warmer than the surrounding air

An object will float in air when the density of the object is lower than the density of the air.

Increase in temperature of a gas decreases the density of the gas.

For the pilot to make the balloon rise, he must find a way to make the balloon more lighter than air. To do this, he has to increase the temperature of the balloon.

In this question, the pilot can increase the temperature inside the balloon so it is warmer than the surrounding air in order for the balloon to quickly rise several feet higher above some trees in distance.

Therefore, option D best explain how the pilot can make the balloon rise.

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The term mechanical advantage has to do with the ratio of the load to the effort.

The term mechanical advantage has to do with the ratio of the load to the effort. There is a mechanical advantage when the effort applied is less than the load.

Hence, the task is made easier because the force needed to move the piano up the plane was less than the force needed to lift it straight up into the van, but the distance over which the piano moved was greater.

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They are because they don't know if viruses are alive and have a mind of its own or its just humans spreading it all around. Another reason is if they do find out they are alive or not they need to find solutions to kill them or to slow/stop the spreading.

Answer:

1. Mechanics: Mechanic deals with the motion of objects. In real life, mechanic is used in determine the speed of an object a car in motion, a rocket projected into space, a jogging or walking man, etc.

2. Heat: Heat is a form of energy transferred due to the difference in temperature of two bodies. Heat flows from the hotter to the colder body always. The study of heat as been useful in the ares of cooking, power generation, energy derived from the food we eat etc.

3. Sound: Sound is due to vibrations of molecules. Sound energy travel in the form of waves through a medium from one body to another. The study of sound in physics is called acoustic physics, and it has been employed in the media houses like theaters and cinemas, and is also used in medical aids that assists hearing. Other real life phenomena include been able to hear myself type on my keyboard right now, and our ability to talk to and hear each other.

4. Light: Light is a form of energy, transmitted as an electromagnetic wave. Light wave has its unique wavelength in the e-m wave spectrum. Light helps us see things that we see by bouncing off of those things into our eyes. The eye is the only body organ that can be used to detect light. Study of light is useful in lighting technologies used at home and in other places. Light is very important in our daily lives.

5. Electricity and magnetism: Electricity is a phenomenon that results from the movement or flow of electrons through or from one body to another due to the presence of electric field around the body. Magnetism is an interaction between bodies is produced by a magnetic field around these bodies. These two phenomena has been known to be reversible and can each produce the other. Electricity is obviously used in our homes to power almost everything, generate magnetism, heat our homes etc. Magnetism is used in lifting in metal industries, used in generating electricity and is even used in our speakers to produce sound.

6. Atomic physics: Atomic physics studies atoms as an isolated system of electrons and an atomic nucleus. It studies the arrangement of electrons around the nucleus and the change brought about with changes to this arrangement. The study of atomic physic is most importantly utilized in the medical field for advanced diagnostic machines like the MRI.

7. Nuclear physics: This branch of physics studies the activities within the nucleus of an atom. It also studies the structures within the nucleus and the activities that produce these changes and the effect of these changes. The generation of electricity and the production of nuclear and atomic weapons are all thanks to nuclear physics.

8. Plasma physic: Plasma physics studies plasma, a state of matter comprised of charged particles. Plasmas are usually created by heating a gas until the electrons become detached from their parent atom or molecule. Plasma physics assisted with the understanding of some activities within our atmosphere like lightning and other phenomena like the northern and southern sky lights.

9. Geophysics: Geophysics studies physical activities within the earth's crust. Geophysics has been instrumental in deep earth mineral exploration for mining and petroleum industries, and also has been vital for the generation of electricity by geothermal means.