A car moves at 12 m/s for 30.0 seconds. It then accelerates at 1.5 m/s2 for 8.00 seconds.
Finally, it continues on at this top speed for another 12.0 seconds. Calculate the net
displacement during the whole time interval.

\(\\ \rm\longmapsto I=\dfrac{Q}{t}\)

\(\\ \rm\longmapsto Q=It\)

\(\\ \rm\longmapsto Q=2.72\times 9.88\)

\(\\ \rm\longmapsto Q=26.87C\)

The amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

Electric charge is quantized, meaning it exists in discrete amounts and is measured in coulombs (C). The elementary charge, represented by the symbol "e," is the charge of a single proton or electron, approximately equal to 1.602 x 10^-19 coulombs. Protons carry a positive charge, while electrons carry an equal but opposite negative charge.

When electric charges are stationary, they create an electric field around them. When charges are in motion, they produce a magnetic field in addition to the electric field, leading to electromagnetic effects.

Charge is a fundamental property of matter that determines its interaction with electric and magnetic fields and is crucial to understanding and explaining various electrical and electromagnetic phenomena in the natural world.

To calculate the amount of charge that flows past a point in the wire use the equation:

Q = I * t

Where:

Q is the charge (in Coulombs)

I is the current (in Amperes)

t is the time (in seconds)

Given:

Current (I) = 2.72 A

Time (t) = 9.88 s

Substitute these values into the equation to find the charge:

Q = I t

Q = 2.72 A * 9.88 s

Calculating the product:

Q = 26.8976 C

Therefore, the amount of charge that flows past a point in the wire during that time is approximately 26.8976 Coulombs.

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Answer:

0.125 J

Explanation:

E = ½ kx²

E = ½ (25 N/m) (0.10 m)²

E = 0.125 J

The stored elastic potential energy from the given equation is equal to 0.5 J.

When an elastic object, such a spring or a stretched rubber band, is displaced from its equilibrium state, it stores energy called elastic potential energy.

Given:

Spring constant, k = 25 Nm⁻¹

Distance, s = 10 cm

From the given equation

E = (0.5) × k × e²

Substitute values:

Ee = (0.5) ×  k × e²

Ee = (0.5) ×  25 ×  (0.1)²

Ee = 0.5 J

Hence, the stored elastic potential energy from the given equation is equal to 0.5 J.

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The lowest frequency for standing waves on a wire that is 10.0 m long, has a mass of 100 g, and is stretched under a tension of 250 N is approximately 56.5 Hz.

The frequency of a standing wave on a wire depends on the tension (T), length (L), and mass per unit length (μ) of the wire. The relationship between these variables is given by:

f = (1/2L) * √(T/μ)

where f is the frequency of the standing wave.

To solve for the lowest frequency, we need to take the wire's length, mass, and tension into account.

The mass per unit length can be calculated by dividing the mass (m) by the length (L):

μ = m / L

Substituting the values, we get:

μ = 0.1 kg / 10.0 m

= 0.01 kg/m

Substituting the given values of L, T, and μ into the equation for frequency, we get:

f = (1/2 * 10.0 m) * √(250 N / 0.01 kg/m)

f ≈ 56.5 Hz

Therefore, the lowest frequency for standing waves on the wire is approximately 56.5 Hz.

The lowest frequency for standing waves on the wire is approximately 56.5 Hz, given its length of 10.0 m, mass of 100 g, and tension of 250 N.

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When an electron jumps from a higher energy level to a lower energy level within an atom, it emits energy in the form of electromagnetic radiation. This emission produces a line spectrum, also known as a discrete or atomic spectrum.

In this case, the electron is transitioning from orbital 3 to orbital 5, indicating a jump to a higher energy level. As a result, the emitted radiation will have a higher frequency and shorter wavelength. The spectrum produced will consist of specific wavelengths or colors corresponding to the energy difference between orbital 5 and orbital 3.

Since the electron is moving within a single atom, this line spectrum will be characteristic of the element and can be used for identification purposes.

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(a) A solar panel with an area of approximately 3.86 m2 is needed to supply 9 A at 120 V, assuming a 40% efficiency and 700 W/m2 solar irradiance. (b) such a solar panel can save approximately $0.98 per day in utility costs.

To calculate the required roof area to supply 9 A at 120 V, we need to first calculate the power needed by the load.

Power (P) = Voltage (V) x Current (I) = 120 V x 9 A = 1080 W

Next, we can calculate the power output of the solar panel:

Power output of solar panel = Solar irradiance x Efficiency = 700 W/m2 x 0.4 = 280 W/m2

Now, we can calculate the area of the solar panel needed to produce the required power:

Area = Power required / Power output of solar panel = 1080 W / 280 W/m2 = 3.857 m2 or approximately 3.86 m2 (rounded to three decimal places).

Therefore, a solar panel with an area of approximately 3.86 m2 is needed to supply 9 A at 120 V, assuming a 40% efficiency and 700 W/m2 solar irradiance.

To calculate the savings in utility cost, we need to first calculate the energy produced by the solar panel per day.

Energy produced per day = Power output of solar panel x Hours of sunlight = 280 W/m2 x 8 hours = 2240 Wh or 2.24 kWh

Next, we can calculate the cost savings per day:

Cost savings per day = Energy produced per day x Utility cost per kWh = 2.24 kWh x $0.44/kWh = $0.98

Therefore, such a solar panel can save approximately $0.98 per day in utility costs, assuming an average of 8 hours of sunshine per day and a utility cost of $0.44/kWh. Over the course of a year, this would add up to approximately $357 in savings.

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Answer: The 6 kg rock sitting on a 3.2 m cliff.

Explanation:

The potential energy of an object of mass M that is at a height H above the ground us:

U = M*H*g

where g is the gravitational acceleration:

g = 9.8m/s^2

Then:

"An 8 kg rock sitting on a 2.2 m cliff"

M = 8kg

H = 2.2m

U = 8kg*2.2m*9.8 m/s^2 = 172.48 J

"a 6 kg rock sitting on a 3.2 m cliff"

M = 6kg

H = 3.2m

U = 6kg*3.2m*9.8m/s^2 = 188.16 J

You can see that the 6kg rock on a 3.2m cliff has a larger potential energy.

Other forms of electromagnetic radiation you think could be ionizing are x-rays and gamma rays.

Ionizing radiation, including nuclear radiation, consists of subatomic debris or electromagnetic waves which have sufficient strength to ionize atoms or molecules by using detaching electrons from them.

Ionizing radiation is a shape of power that acts by using casting off electrons from atoms and molecules of materials that include air, water, and dwelling tissue. Ionizing radiation can journey unseen and bypass these materials. whilst ionizing radiation interacts with cells, it is able to purpose damage to the cells and genetic fabric (i.e., deoxyribonucleic acid, or DNA). If now not properly repaired, this damage can result in the death of the mobile or probably dangerous adjustments in the DNA (i.e., mutations.

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False. The statement "In parallel-flow heat exchangers, the outlet temperature of the cold fluid may exceed the outlet temperature of the hot fluid" is false.

In parallel-flow heat exchangers, the hot and cold fluids flow in the same direction, entering at opposite ends and exiting at the same end. In this configuration, the outlet temperature of the hot fluid will always be higher than the outlet temperature of the cold fluid. This is because heat transfer occurs from the hot fluid to the cold fluid, resulting in a decrease in temperature for the hot fluid and an increase in temperature for the cold fluid. Therefore, the outlet temperature of the cold fluid will never exceed the outlet temperature of the hot fluid in a parallel-flow heat exchanger.

The statement "In parallel-flow heat exchangers, the outlet temperature of the cold fluid may exceed the outlet temperature of the hot fluid" is false. In parallel-flow heat exchangers, the outlet temperature of the hot fluid is always higher than the outlet temperature of the cold fluid.

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a) The shock is permanent.

b)The shock is temporary.

It is the classical model of economic growth based primarily on the work of Ramsey, with extensions provided by David Cass and Tjalling Koopmans.

a) The imperfect information will be done. Stability decreases and the resulting errors will be forecasted.

Thus, the shock is permanent

b) Response to error will be increased and process required to reduce errors will be followed by actual change in information.

Thus, the shock is temporary.

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The relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.

Instantaneous velocity is the rate of change of position for a very small interval of time. The interval of time so that that its value is almost zero. Instantaneous speed is the magnitude of instantaneous velocity without any direction.

The instantaneous velocity is vector quantity just like velocity and the instantaneous velocity is a scalar quantity just like speed. The value of if instantaneous velocity with direction is instantaneous velocity.

Therefore, the relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.

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Hypervisors, guest machines, and host machines are important concepts in virtualization. A hypervisor is a software that allows multiple operating systems to run on a single hardware host machine.

Hypervisors are a type of virtualization software that allows multiple operating systems to run on a single hardware host machine. The host machine runs the hypervisor software, which creates virtual machines (VMs) that act as if they are independent machines running on their hardware.

The hypervisor acts as the main answer to maintain the operating systems and resource allocation.The guest machines, also known as virtual machines, are created by the hypervisor and are instances of a guest operating system that runs on the host machine.

Guest machines are isolated from each other, allowing different operating systems and applications to run without interfering with each other.

The host machine is the physical machine that runs the hypervisor software. It provides the necessary hardware resources, such as CPU, memory, and storage, to the guest machines.

The hypervisor manages the allocation of these resources to the guest machines based on their requirements.A diagram to illustrate this is as follows: [Insert diagram here]

Hypervisors, guest machines, and host machines are important concepts in virtualization. A hypervisor is a software that allows multiple operating systems to run on a single hardware host machine. The guest machines are virtual machines created by the hypervisor, which act as independent machines. The host machine is the physical machine that runs the hypervisor software and provides the necessary hardware resources to the guest machines. These concepts are important in understanding the virtualization technology and its benefits.

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Answer:

-5.625 m/s^2

Explanation:

Use the kinematic equation \(v_{f}^{2} = v_{o}^{2} + 2ad\)

Substitute the values and solve for a.

0^2 = 75^2 + a 2 (500)

0 = 5625 + 1000a

-5625 = 1000a

-5.625 = a

The movement of a pool ball, after being struck by a cue, is an example of Newton's second law of motion.

According to Newton's second law of motion, an object's acceleration is directly proportional to the magnitude of the applied net force.

Newton's second law of motion is also known as law of momentum. It says that the rate of change of momentum is equal to the net force acting.

The cue ball will stop moving immediately after colliding with a still pool ball if it hits it directly. The other ball, which will now be moving forward at the same speed as the cue ball did before the collision, will have received all of the kinetic energy that was in the first ball.

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Answer:

Explanation:

like charges repel each other if one group of electrons has more mass it will push the other smaller mass of electrons away

The centripetal force that must be exerted against the wings to keep the plane moving in a circle is 3.71 × 10⁴ N.

Given that,

Time = 30 min = 30 × 60 sec = 1.8 × 10³ s

Radius = 50 km = 50× 10³ m = 5× 10⁴ m

We know the expression for velocity as,

v = 2πr/(T) = (2π×5× 10⁴) /(1.8 × 10³) = (π×10⁵)/(1.8 × 10³) = (100× 3.14)/1.8 = 174.44 m/s ≈ 175 m/s

Mathematically, centripetal force can be written as,

F = mv²/r = (60,500× 175²)/(5× 10⁴) = 3.71 × 10⁴ N

Thus, required centripetal force is 3.71 × 10⁴ N.

The question is incomplete. The complete question is ' Captain Chip, the pilot of a 60,500-kg jet plane, is told that he must remain in a holding pattern over the airport until it is his turn to land. If Captain Chip flies his plane in a circle whose radius is 50.0 km once every 30.0 min, what centripetal force must the air exert against the wings to keep the plane moving in a circle?'

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The frequency is 5.9 jules.

we have been given that the mass is equal to 2.4 kgs and the amplitude others 9.3 and returned to the power -2 m. Yeah. So he can write The angular frequency is two pi f. That is To buy into 3.8 Hz. That is equal to 23.87. Ready for a 2nd. Now to find the first concert,

we can write Omega Square. Um that is 23.87 reading perspective, but you didn't one second. We square this into 2.4 gauges. That is equal to 1,36, newtons per meter. How to find the total energy we laid half. Okay, A square that is equal to one by two and 21368.26 into 9.3 to 10 to the minus two squared. That is equality 5.9 Jules.

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Answer:

Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure.

Answer:

What's the question?

Explanation:

Scientists believe that light is made of streams of particles, called photons, because of their observed behavior. In certain experiments, such as the photoelectric effect, it was found that light behaves more like a particle than a wave. For example, light can knock electrons out of atoms, which would require a particle-like behavior. Additionally, the energy of each photon is directly proportional to its frequency, which is a characteristic of particles. The behavior of light in other experiments, such as the double-slit experiment, can also be explained by the wave-like behavior of photons. Therefore, scientists have concluded that light has both particle and wave-like properties, known as wave-particle duality.

While this answer may provide helpful information for your assignment, it is important to remember that using it verbatim could be seen as plagiarism. To avoid this, it is best to use your own words and properly cite any sources used. This will ensure that you are giving credit to the original author and presenting your own unique perspective on the topic.

~~~Harsha~~~

Answer:

3m/s

Explanation:

KE = ¹/₂ mv²

But workdone = F x d

Workdone = 300 x 6

Workdone = 1800J

Now per the question.

assuming

workdone= KE

Then

KE = ¹/₂ mv²

1800J = ¹/₂ 400kg x V²

3600J = 400 x V²

3600J / 400kg = V²

9 =V²

V =√(9)

V = 3m/s

The activity of 1.0 g of 226Ra is approximately 2.19 x \(10^4\) Bq.

Activity = decay constant x number of atoms

The decay constant of 226Ra is:

decay constant = ln(2) / half-life = ln(2) / (1600 years x 365.25 days/year x 24 hours/day x 3600 seconds/hour) ≈ 4.95 x \(10^{-12} s^{-1\)

The number of atoms in 1.0 g of 226Ra is:

number of atoms = mass / molar mass = 1.0 g / 226 g/mol = 4.42 x \(10^{-3\)mol

Multiplying the decay constant and the number of atoms, we get:

Activity = decay constant x number of atoms = (4.95 x \(10^{-12} s^{-1\)) x (4.42 x \(10^{-3\) mol) ≈ 2.19 x \(10^4\) Bq

The decay constant is a measure of the probability of a radioactive atom decaying per unit of time. It is a fundamental concept used to describe the behavior of radioactive decay and is denoted by the symbol λ (lambda). The decay constant is related to the half-life of a radioactive material, which is the time required for half of the material to decay.

The decay constant is determined by the type of radioactive decay, as each type of decay has a unique probability of occurring. For example, the decay constant for alpha decay is typically much higher than that of beta decay. The decay constant can be calculated using the activity of the radioactive material, which is the rate at which it emits radiation. The decay constant is a critical parameter in the prediction of the behavior of radioactive materials and their potential impact on the environment.

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Answer:

A and C

Explanation:

The easiest way to solve this is by drawing a new triangle, one where one leg is clearly longer than the other.  This way, it is easy to see which angles match.

Or, using geometry, we can show that C = θ since they are alternate interior angles.  Since C is complementary to the angle between the rays, and A is also complementary to the angle between the rays, then A = C, so A = θ.

Answer:

SUP DAD i love cookies

Explanation:

yuh

At a constant pressure, the volume of a gas varies as to the absolute temperature and at a constant volume the pressure of the gas varies directly with the absolute temperature. This is known as ideal gas law.

The statement describes two fundamental gas laws: Boyle's Law and Charles's Law. When combined, they form the ideal gas law.

According to Boyle's Law, the volume of a gas at constant temperature is inversely proportional to its pressure. It may be expressed mathematically as P₁V₁ = P₂V₂, where P₁ and V₁ are the beginning pressure and volume, and P₂ and V₂ are the final pressure and volume.

According to Charles' Law, the volume of a gas under constant pressure is exactly proportional to its absolute temperature. V₁ / T₁ = V₂ / T₂, where V₁ and T₁ are the beginning volume and temperature, and V₂ and T₂ are the final volume and temperature.

When these two laws are combined, we get the ideal gas law: PV = nRT, where P is pressure, V is volume, n is the number of moles, T is the absolute temperature, and R is the ideal gas constant. The connection between pressure, volume, temperature, and the quantity of gas molecules is described by this law.

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Answer:

read explanation

Explanation:

Due to this reason a gas (air) a conductor of electricity at low pressure. ... It is because when the gas is at very low pressure positive charged ions are not available to eject out the electron from the cathode hence the discharge current stops.No, vacuum cannot conduct electricity.

a) v = 9.8 m/s is his velocity just before his feet strike the ground.

b) When he slows down, his legs apply an average force of 3430 N to his torso.

Therefore, deceleration is defined as a reduction in speed as the body moves away from the beginning location. The opposite of acceleration is deceleration.

Given parameters;

Height of the tower , h = 5.0m

Distance of deceleration, d = 0.70m

Mass of the tensor, m = 50 kg

Final speed of the person calculated as:

1/2mv² = mgh

v² = 2gh

v = \(\sqrt{2gh}\)

v = \(\sqrt{2*9.8*5}\)

v = 9.8 m/s.

The torso's deceleration over the specified distance is

v² = u²+2as

a = v²-u²/2s

a = 0-  9.8²/2*0.7

a = 68.6m/s²

The average amount of force his legs apply to his body as he slows down is:

F = ma

F = 50× 68.6

F = 3430 N.

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Tardigrades related to astronomy as they can survive in extreme, harsh environments, including space for long time without oxygen.  The correct option is A , B and C.

A special adaptation that allows the tiny animal known as the tardigrade to curl up into a dry, lifeless ball and survive for decades.

Tardigrades can undergo utter vacuum and intense pressures more than five times as in the deepest ocean. Temperatures up to 300F and as low as -458F is maintained.

They survive in space and for long time for about 10 days. They can live without water for decades.

Thus, the correct option is A , B and C.

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