hows a 170 g hamster sitting on an 830 g wedge-shaped block. The block, in turn, rests on a spring scale. An extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down. Friction between the block and the scale is large enough that the block does not slip on the scale.

According to Newton's law of cooling the temperature of a body that is colling down is related to time by the following formula:

Where:

In this case, the initial and ambient temperatures are the same. Therefore, the rate at which the temperature changes depends on the value of "k". The greater the value of "k" the faster the mass will cool down.

Answer:

Ballon B's electric field would be directed away from Balloon A since B exerts a repulsive force on A. Balloon B would also have a negative charge, since like charges repel one another.

Explanation:

The electric field created by Balloon B will be directed away from Balloon A.

The direction of electric field is always opposite to the direction of negative charge.

The electric field created will be directed opposite to the negative charge of balloon A.

Thus, the complete sentence will be, "the electric field created by Balloon B will be directed away from Balloon A.

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Answer:

Oh its fine i am not in college but its still fine

Explanation:

Answer:

January 1st, 2000

Explanation:

I hope this has helped you!

Answer: 21.0 mm b. 16.5 mm

Explanation: A 50.0 mm lens is used to take a picture of an object 1.30 m tall located 4.00 m away. What is the height of the image on the film? a. 21.0 mm b. 16.5 mm

Answer:

don't know the answers sorry

Answer:

Although expansion seems to imply a Big Bang, no other specific predictions of the Big Bang theory were tested and confirmed until the 1960s.  

Explanation:

Answer:

Today, the consensus among scientists, astronomers and cosmologists is that the Universe as we know it was created in a massive explosion that not only created the majority of matter, but the physical laws that govern our ever-expanding cosmos.  This is known as The Big Bang Theory. For almost a century, the term has been bandied about by scholars and non-scholars alike. This should come as no surprise, seeing as how it is the most accepted theory of our origins.

;)

The space station's, which has a ringed compartment is rotating with initial velocity 0.10rad/s and angular acceleration of 0.01rad/s², angular velocity after 960 seconds is 9.7 rad/s.

To find the space station's angular velocity after 960 seconds, we can use the following equation that relates initial angular velocity, angular acceleration, and time:

Final angular velocity (ωf) = Initial angular velocity (ωi) + (angular acceleration × time)

Given:
Initial angular velocity (ωi) = 0.10 rad/s
Angular acceleration = 0.01 rad/s²
Time = 960 seconds

Now, we can plug these values into the equation:

ωf = 0.10 rad/s + (0.01 rad/s² × 960 s)

ωf = 0.10 rad/s + (9.6 rad/s)

ωf = 9.7 rad/s

So, the space station's angular velocity after 960 seconds is 9.7 rad/s.

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It takes less and less time to fuse heavier and heavier elements inside a high-mass star True. It takes less and less time to fuse heavier and heavier elements inside a high-mass star.

This is because as a star fuses hydrogen into helium, the core temperature increases, causing the pressure to also increase. This pressure pushes against the force of gravity, which is trying to collapse the star. The higher the pressure, the more gravity is balanced, allowing the core to continue fusing heavier elements. As the fusion reactions continue, the core temperature increases even further, allowing fusion to occur faster and faster.

Eventually, the core will reach a point where it can no longer sustain fusion, and it will collapse in on itself, causing a supernova explosion. This explosion will create even heavier elements, which can then be distributed throughout space to eventually form new stars and planets. So, the faster fusion occurs, the shorter the lifespan of a high-mass star, as it will consume all of its fuel more quickly and end in a supernova explosion.

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Acceleration will increase as the angle of incline does, and as a result, force will as well.

The gravitational force acting on the cart increases as the slope of the incline increases, causing it to accelerate more quickly.The ramp's steepness will cause an increase in inclination. As a result, the acceleration increases as the inclination angle increases. This acceleration causes the object to descend with greater speed.

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Debris collecting around pilings is most likely to create a boating hazard around river bridges.

The option (c) is the correct option.

Boating Hazards:

Dams, submerged items, freezing water, rapidly changing weather, sunstroke, and current are just a few of the dangers that boaters may encounter. It's not always easy to see these risks. These risks must be recognized by boaters, and they must always be prepared to prevent hazards.

Operator negligence is the most frequent reason for boating accidents, according to US Coast Guard (USCG) recreational boating statistics from 2019. Inattentiveness on the part of the operator can result in crashes, people falling overboard, and slip-and-fall incidents on board, all of which can result in life-threatening injuries.

The greatest places to find more about any potential local risks are marinas and local boaters. Check any nearby marine charts as well to learn about potential dangers and how to avoid them.

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The answer is yes. Fallen leaves give off CO2 when they decompose in the soil. This is because they are eaten by microbes that use oxygen and release carbon dioxide as part of their respiration. According to a study by MIT, the natural decay of organic carbon contributes more than 90 percent of the yearly carbon dioxide released into Earth’s atmosphere and oceans The rate of decomposition depends on various factors, such as temperature, moisture, and leaf composition. Decomposing leaves are also a source of nitrous oxide, another greenhouse gas that's more potent than carbon dioxide. However, not all trees lose their leaves in fall. Some trees, such as pines, spruces, and firs, are evergreen and keep their needles throughout the year. These trees can still take in carbon dioxide and produce oxygen even when their deciduous counterparts are dormant.

A wave is an energetic disturbance in a medium that doesn't include any net particle motion. Elastic deformation, a change in pressure, an electric or magnetic intensity, an electric potential, or a change in temperature are a few examples.

The distance between two successive wave crests or troughs is referred to as the wavelength. It is estimated in the direction of the wave. Typically, the wavelength is denoted by the symbol λ. The metre is its SI unit.

The relationship between wavelength and frequency is inverse. A wave's frequency decreases as its wavelength increases.

v = fλ

Frequency = 1 / T

1 / 0.1 = 10 Hz

v = 10 × 25 = 250 m/s

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The speed of the wave is 250 m/s.

Time period of the wave, T = 0.1 s

Wavelength of the wave, λ = 25 m

Frequency is defined as the number of wave cycles completed by the wave in one second.

Frequency is the reciprocal of time period. Its unit is s⁻¹.

So, frequency of the wave is given by,

f = 1/T

f = 1/0.1

f = 10 s

The expression for the speed of the wave is given by,

v = fλ

Applying the values of f and λ,

v = 10 x 25

v = 250 m/s

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The heat of fusion of lead is (a) 227°C.To solve this problem, we need to use the principle of conservation of energy, which states that the total energy in a closed system remains constant.

Option D is Correct answer. The ultimate temperature is well below the lead's (327°C) melting point.

To find the final temperature of the lead bullet, we need to use the equation for heat transfer
Q = mCΔT
where Q is the heat transferred, m is the mass of the bullet, C is the specific heat of lead, and ΔT is the change in temperature.
First, we need to find the initial temperature of the bullet. We are given that the air temperature is 20°C, but we don't know the initial temperature of the bullet. However, we can assume that the bullet is at the same temperature as the air before it strikes the steel plate. Therefore, the initial temperature of the bullet is also 20°C.
Next, we need to find the heat transferred when the bullet strikes the steel plate. We can assume that all of the kinetic energy of the bullet is converted into heat when it stops. Therefore:
Q = 0.5mv²
where m is the mass of the bullet and v is its velocity. Plugging in the values, we get:
Q = 0.5×(5 g)×(300 m/s)² = 2.25 J
Finally, we can use the equation for heat transfer to find the final temperature of the bullet:
ΔT = Q / (mC)
ΔT = 2.25 J / (5 g x 0.128 J/g °C) = 3.52°C
Therefore, the final temperature of the lead bullet is 20°C - 3.52°C = 16.48°C.
Note that this final temperature is well below the melting point of lead (327°C), so the bullet will remain solid. The heat of fusion of lead is not needed to solve this problem.

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The correct factors that determine the maximum safe speed on a banked road are the road condition and the radius of curvature, which corresponds to option (D).

The maximum speed at which a car can safely round a turn on a banked road depends on two main factors: the road condition and the radius of curvature.

The weight of the car and the normal force are related to the frictional force between the tires and the road, but they are not the sole determining factors. The normal force depends on the weight of the car and the angle of the road banking, but it does not directly determine the maximum safe speed.

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Answer:

The strength of the electromagnet increases.

Explanation:

Inelastic collision and a host of other factors causes the loss of energy.

Kinetic energy of an object is the energy that it possesses due to motion.

It can be defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. When it has gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

In an inelastic collision which is the case of ball X and Y, the kinetic energy of the system is not conserved. The energy that you find lost has been dissipated as other forms of energy. This can be heat, friction, vibrational energy transferred to atoms of the colliding particles, energy lost to deform the atomic structure etc.

In conclusion, the inelastic collision nature of the two balls results in the loss of energy through different forms.

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Answer:

Circuit

Series Circuit

Parallel Circuit

Short Circuit

Explanation:

I think this is right haha,,

The breakup of a supercontinent such as Pangaea could result in an increase in species diversity.

When a supercontinent breaks up, it leads to the formation of new landmasses, oceans, and environmental conditions. This provides opportunities for species to evolve and adapt to new habitats, which can result in the emergence of new species. Furthermore, the separation of previously connected landmasses can allow for the development of distinct evolutionary lineages, which can further contribute to an increase in species diversity. Thus, the breakup of a supercontinent can lead to an increase in species diversity. On the other hand, the breakup of a supercontinent would not necessarily lead to a reduction in the area of continental interiors or an increase in world shoreline. The area of continental interiors would depend on the size and distribution of the newly formed continents, which could vary depending on the specific tectonic processes involved. Similarly, the amount of world shoreline would depend on the size and position of the new landmasses relative to the oceans, which could also vary.

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The correct option is a. There is only work done on the system, so there will be an increase in the internal energy of the gas that will appear as an increase in temperature.

When an ideal gas is compressed without allowing any heat to flow into or out of the gas, the temperature of the gas will increase. The correct option is a. There is only work done on the system, so there will be an increase in the internal energy of the gas that will appear as an increase in temperature.

In the process of compressing an ideal gas without allowing any heat to flow into or out of the gas, the internal energy of the gas increases as work is done on the system. This increase in internal energy appears as an increase in temperature.

Since the heat exchange is prohibited, all the work done is used to increase the internal energy of the gas as pressure is exerted on it by the surroundings.

Therefore, the correct option is a.

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Answer:For example, standard atmospheric pressure (or 1 atm) is defined as 101.325 kPa. The millibar, a unit of air pressure often used in meteorology, is equal to 100 Pa. (For comparison, one pound per square inch equals 6.895 kPa.)

Explanation:A pascal is a pressure of one newton per square metre, or, in SI base units, one kilogram per metre per second squared.

I hope this helps.... I'm sorry if it doesn't

Answer:

the answer is radioactive dating

Answer:

by using voltmeter

Explanation:

Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

The potential difference that should be measured in the circuit should be used voltmeter.

A voltmeter refer to the instrument that should be used for determining the electric potential difference that lies between the 2 points with respect to the electric circuit.

Also it should be connected in the parallel way. Mostly it contain the high resistance so it should be have the minimum current from the circuit.

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The type of neutrino or antineutrino involved in the process A⁰ → P + μ⁻ + ? is a muon neutrino.

In this process, an unknown particle A⁰ decays into a proton (P), a negatively charged muon (μ⁻), and another unknown particle. The conservation laws of energy and momentum require that for each decay process, there should be equal numbers of particles and antiparticles produced. Since the negatively charged muon (μ⁻) is produced, its corresponding neutrino must also be present to conserve lepton number.

Muons are heavy cousins of electrons, and their associated neutrinos are called muon neutrinos. Muon neutrinos are denoted by the symbol ν_μ and have no electric charge or mass. They interact primarily through the weak nuclear force, making them difficult to detect.

Therefore, based on the involvement of the negatively charged muon in the process A⁰ → P + μ⁻ + ?, we can determine that a muon neutrino (νμ) is also involved in this decay process.

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The final temperature when 50 ml of water at 80°C is added to 25 ml of water at 25°C is approximately 61.67°C.

To calculate the final temperature, we can use the principle of energy conservation, which states that the total heat lost by one substance is equal to the total heat gained by another substance in a closed system.

First, we can calculate the heat lost by the water at 80°C using the formula:

Q₁ = m₁ * c₁ * ΔT₁

where Q₁ is the heat lost, m₁ is the mass of the water at 80°C, c₁ is the specific heat capacity of water, and ΔT₁ is the change in temperature. Since we have 50 ml of water, we can assume its mass to be 50 grams (as the density of water is approximately 1 g/ml). The specific heat capacity of water is 4.18 J/g°C. Thus:

Q₁ = 50 g * 4.18 J/g°C * (80°C - T)

where T is the final temperature.

Similarly, we can calculate the heat gained by the water at 25°C:

Q₂ = m₂ * c₂ * ΔT₂

where Q₂ is the heat gained, m₂ is the mass of the water at 25°C (25 ml ≈ 25 g), c₂ is the specific heat capacity of water, and ΔT₂ is the change in temperature (T - 25°C).

Since energy is conserved, we can set Q₁ equal to Q₂:

50 g * 4.18 J/g°C * (80°C - T) = 25 g * 4.18 J/g°C * (T - 25°C)

Simplifying the equation, we can solve for T:

50 * (80 - T) = 25 * (T - 25)

4000 - 50T = 25T - 625

75T = 4625

T = 4625 / 75

T ≈ 61.67°C

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Answer: Aplitude

Explanation: Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived. Amplitude is measured in decibels.

Answer:

Amplitude

Explanation:

The loudness of a sound is determined by the amplitude of the wave. In terms of the pattern of a transverse wave, amplitude refers to how "high" and "low" the waves go from the center line.

PF

Answer:

Yes, it can be destroyed.The total amount of matter (atoms) before and after a chemical reaction (change), remains the same.

Explanation:

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The amplitude of the given sinusoidal function is 3, the period is 6, and the sine function modeled by the given sketch is \(y = 3 sin\left(\frac{\pi}{3} x + \frac{\pi}{2}\right)\).

Given the sketch of a sinusoidal function, we need to find out the amplitude, period, and the sine function modeled by this sketch.

Observe the given graph. Consider the highest point of the graph and the lowest point of the graph. The highest point and the lowest point are at the distance of 3 units on the y-axis.

Hence, the amplitude of the given sinusoidal function is 3.  \(A = 3\)To find the period, we need to observe the distance between two consecutive peaks or troughs.  

We can observe that there are 4 peaks in one complete cycle and the distance between any two peaks is 6 units.

So, the distance between two peaks is called the period of the graph and it is given by:Period = \frac{2\pi}{\omega}

We know that omega = \frac{2\pi}{Period}

Given thatPeriod = 6\omega = \frac{2\pi}{6}\omega = \frac{\pi}{3}

Now, the sine function is represented as \(y = A sin(\omega x + \phi)\)

Here, \(A\) is the amplitude which is 3.

\omega is the angular frequency which is\frac{\pi}{3}.

Let's find the phase angle \(\phi.

As we know that the highest value of the sine function is achieved at x = 0, we can use this information to find the value of \(\phi\).

So, we get,\(3 = A sin(\omega * 0 + \phi)\)\(3 = 3 sin \phi\)\(sin \phi = 1\)\(\phi = \frac{\pi}{2}\)

Now, we can write the sine function modeled by the given sketch:\(y = 3 sin\left(\frac{\pi}{3} x + \frac{\pi}{2}\right)\)

Hence, The sine function represented by the provided sketch is \(y = 3 sinleft(fracpi3 x + fracpi2right), and the given sinusoidal function has an amplitude of 3, a period of 6, and a period of 6.of \).n x.

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