Is joules law and Ohm's law same thing or different? Please tell:​

Answer:

4000 kg.m/s

Explanation:

p=mv

m=800 kg

v=5 m/s

p=(800)(5)= 4000 kg.m/s

The possible potential difference between the truck's top and bottom side panels is 1.39 x 10^-4 V.

The potential difference between two points in an electric circuit is given by the product of the magnetic field, the cross-sectional area of the conductor, and the component of velocity perpendicular to the magnetic field.

The potential difference between the top and bottom of the truck's side panels can be calculated using the following formula:

V = Blv

Where:

V = potential difference (V)

B = magnetic field (T)

l = length of conductor (m)

v = velocity of conductor perpendicular to the magnetic field (m/s)

Given that the magnetic field is B = (5.0 x 10^-5 T, north) and the truck is moving west at 50 km/hr = 13.89 m/s, the potential difference between the top and bottom of the truck's side panels can be calculated as:

V = Blv = (5.0 x 10^-5 T) * (2.0 m) * (13.89 m/s) = 1.39 x 10^-4 V

It is important to note that the magnetic field is pointing north and the truck is moving west, so the velocity of the truck is perpendicular to the magnetic field, which means that the potential difference is not zero. Also, it is important to note that the velocity of the truck is given in km/hr and needs to be converted to m/s before using it in the equation.

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Answer:

15 kg ball

Explanation:

(a) Time = 9.30 seconds. (b) Average Speed is 48.2 m/s. (c) Displacement is 305 m. (d) If the calculations are accurate, the time, speed, and distance values found in part (d) should match those found in parts (a), (b), and (c).

To determine the answers to parts (a) through (c) of the problem if the officer starts accelerating 1.00 s after the car passes him,

(a) Time: Since the car continues to move at a constant speed, its time to cover the 400 m distance remains the same as in part (a), i.e., 9.30 s.

(b) Speed: The officer now starts accelerating 1.00 s after the car passes him, so his time to cover the 400 m distance is 1.00 s less than the car, which is 8.30 s. Therefore, his average speed would be:

v = d/t = 400 m / 8.30 s = 48.2 m/s

(c) The displacement of the officer would be the same as in part (c), i.e., 305 m.

To determine the time it takes the officer to catch the car, we can use the same approach as in part (b) but consider the relative velocity between the car and the officer, v_rel = v_car - v_officer.

At the moment the officer starts accelerating, the car has already covered a distance of, d_car = v_car × t_acceleration where t_acceleration is the time the officer takes to start accelerating after the car passes him. Therefore, the displacement is,

d_initial = d_car - d_officer = v_car × t_acceleration - 0

where d_officer is the initial distance between the officer and the car.

Then, the time it takes for the officer to catch the car is, t_catch = d_initial / v_rel.

To determine the speed of the officer when he catches the car, we can use the same approach as in part (b), but use the time it takes for the officer to catch the car, i.e., t_catch. Therefore, the speed of the officer would be, v = d / t_catch = 400 m / (t_catch + 1 s). To determine the distance the officer travels before catching the car, we can use the same approach as in part (c), but use the time it takes for the officer to catch the car, i.e., t_catch. Therefore, the distance the officer travels would be, d = v × t_catch. The values obtained for the time, speed, and distance in part (d) should be the same as in parts (a), (b), and (c) if the calculations are correct.

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Mighty Mouse needs to fly at a speed of 1.025 x 10⁸ m/s to stop the train using his momentum alone.

To solve this problem, we'll use the conservation of momentum principle.

The momentum of the runaway locomotive and Mighty Mouse must be equal and opposite for them to stop the train.

Momentum (p) is calculated as the product of mass (m) and velocity (v): p = mv.

The mass of the train is 2.05 x 10^5 kg, and its velocity is 25 m/s.

The mass of Mighty Mouse is 50 grams, which is 0.05 kg. Let's call the required velocity of Mighty Mouse "v_mm."

Momentum of train = momentum of Mighty Mouse:

(2.05 x 10⁵ kg)(25 m/s) = (0.05 kg)(v_mm) 5.125 x 10⁶ kg m/s = 0.05 kg * v_mm

To find v_mm, we'll divide both sides by 0.05 kg:

v_mm = (5.125 x 10⁶ kg m/s) / (0.05 kg) = 1.025 x 10⁸ m/s

Mighty Mouse needs to fly at a speed of 1.025 x 10⁸ m/s to stop the train using his momentum alone.

However, this speed is about 342 times the speed of light, which is impossible according to the laws of physics.

Therefore, it's not possible for Mighty Mouse to stop the train using his momentum alone.

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Answer:

E) All of the above.

Explanation:

The idea that the solar system formed from a rotating, collapsing gas cloud that ended up as a disk orbiting the Sun is supported by multiple lines of evidence. The fact that most of the planets revolve and rotate in the same direction, in the same plane, suggests that they formed from a flattened disk of material. Conservation of angular momentum means that a collapsing cloud will spin faster and faster, which is consistent with the observed rotation of the planets and the Sun. We also see clouds of gas and dust in space, and disks around young stars, which provides further evidence for this theory.

Answer:

125.44 N

Explanation:

From the question given above, the following data were obtained:

Weight on earth = 784 N

Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²

Weight on moon =?

Next, we shall determine the mass of the person. This can be obtained as follow:

Weight on earth (Wₑ) = 784 N

Acceleration due to gravity of earth (gₑ) = 10 m/s²

Mass (m) =?

Wₑ = m × gₑ

784 = mass × 10

Divide both side by 10

Mass = 784 / 10

Mass = 78.4 Kg

Finally, we shall determine the weight of the person on moon. This can be obtained as follow:

Mass (m) = constant = 78.4 Kg

Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²

Weight on moon (Wₘ) =?

Wₘ = m × gₘ

Wₘ = 78.4 × 1.6

Wₘ = 125.44 N

Therefore, the weight of the person on moon is 125.44 N.

Increasing human population have advanced the problem of the impact of humans on the environment as shown above.

We know that the environment has to do with our natural surroundings. The environment has to do  with that space that is around us from which we obtain the materials and energy that are necessary to support life.

We know that the greatest pressure that is placed on the environment and the resources that is in it comes from anthropogenic activities. These are the activities of the people that live within the environment. The extraction of resources for the provision of energy as well as construction pts great pressure on the environment

As we look at the image, we call to mind that the the explosions in the population of human beings have put more pressure on the environment and thus made it unable to support the human population.

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As the elevator is moved from 15th floor to the 10th floor at a constant speed. It means that the height is decreasing but the speed of the elevator is moved at a constant.

It results that the kinetic stays the same but the potential energy is decreasing.

If we quadruple the energy in a vessel of gas,  the velocity of the gas particles quadruples

An object's volume is the area that is occupied within its three-dimensional boundaries. The term "capacity" may also be used to describe the thing.

When temperature and pressure are constant, a gas's volume is directly proportional to the quantity of moles in the gas. When both the temperature and the volume of a gas remain constant, the pressure is directly proportional to the quantity of gas present. You could consider the situation and use PV=nRT as an alternative. If the energy in a gas vessel was quadrupled, the temperature of the gas would increase proportionally (T). This would result in an increase in gas particle velocity.

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Based on the Latent heat of vaporization of iron, the choice that calculates the amount of energy needed to change the state of iron during intervals D-E is 6272.0 KJ.

The amount of heat needed to transform a unit mass of a substance from a liquid to a gas at that solid's boiling point is known as the latent heat of vaporization.

The following is the formula to determine a substance's latent heat of vaporization:

L = q/m, the latent heat of vaporization where;

Δq is the heat change \sm is the mass of the liquid

The interval D to E is vaporization

Heat required = 349.6 kJ/mol * 112 g / 56g/mol

Heat required = 699.2 kJ

Therefore, Based on the Latent heat of vaporization of iron, the choice that calculates the amount of energy needed to change the state of iron during intervals D-E is 6272.0 KJ.

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The moment of inertia, denoted as I, is the measure of an object's resistance to rotational acceleration. It depends on the shape, mass distribution, and orientation of the object. For a thin, uniform disk rotating around its center of mass, the moment of inertia can be calculated using the formula Icm = (1/2)mr^2, where m is the mass of the disk and r is the radius of the disk.

The moment of inertia of a thin, uniform disk rotating around its center of mass is given by the formula Icm = (1/2)mr^2, where m is the mass of the disk and r is the radius of the disk.

In summary, the moment of inertia is the measure of an object's resistance to rotational acceleration. For a thin, uniform disk rotating around its center of mass, the moment of inertia can be calculated using the formula Icm = (1/2)mr^2.

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The maximum weight possible for the flowerpot that the cords can support can be calculated by adding the maximum tension that each cord can hold before it fails. Since each cord can hold no more than 50 N in tension before it fails, the maximum weight possible for the flowerpot that the cords can support is:

Maximum weight = 50 N + 50 N + 50 N + 50 N = 200 N

Therefore, the maximum weight possible for the flowerpot that the cords can support is 200 N.

It is important to note that the maximum weight possible for the flowerpot is dependent on the number of cords that are used to support it. If there are more cords, the maximum weight possible for the flowerpot will be greater. Conversely, if there are fewer cords, the maximum weight possible for the flowerpot will be less.

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The momentum of the block after 15 seconds is 1380 kg·m/s.

To find the momentum of the block after 15 seconds, we first need to determine its final velocity. We'll use the following terms:

1. Mass (m) = 30 kg
2. Initial velocity (u) = 50 m/s
3. Friction force (F) = 8 N
4. Time (t) = 15 s

Since friction is a force, we can use Newton's second law (F = ma) to find the deceleration caused by friction:

a = F/m = 8 N / 30 kg = 0.267 m/s² (deceleration)

Now, we'll use the equation of motion to find the final velocity (v):

v = u - at = 50 m/s - (0.267 m/s² × 15 s) = 50 m/s - 4 m/s = 46 m/s

Finally, we can calculate the momentum (p) using the mass and final velocity:

p = mv = 30 kg × 46 m/s = 1380 kg·m/s

So, the momentum of the block after 15 seconds is 1380 kg·m/s.

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To use conservation of energy, you can analyze motion of charged particle, calculate its potential energy and kinetic energy at different points, and determine the velocity or other parameters of the particle's motion as it interacts with the potential difference or parallel plate capacitor.

Let's consider the case of a charged particle, such as an electron, moving through a potential difference (voltage) or a parallel plate capacitor. Here's how conservation of energy can be applied:

Potential Energy: The charged particle possesses electric potential energy due to its position in the electric field. The potential energy (PE) of a charged particle with charge q in an electric field with potential difference V can be calculated using the formula: PE = qV.

Kinetic Energy: As the charged particle moves through the potential difference, it experiences an acceleration due to the electric field. This acceleration converts some of the potential energy into kinetic energy (KE).

Conservation of Energy: According to the principle of conservation of energy, the total energy (E) of the system remains constant. In this case, it means that the sum of the potential energy and kinetic energy of the particle remains constant throughout its motion.

At the initial position, when the particle has not yet entered the potential difference or capacitor, it possesses only potential energy. As it moves through the potential difference or enters the capacitor, some of the potential energy is converted into kinetic energy, causing the particle to gain velocity.

At any point in its motion, the total energy (E) of the particle is the sum of its potential energy (PE) and kinetic energy (KE), expressed as E = PE + KE. Since the total energy remains constant, any increase or decrease in potential energy is compensated by a corresponding change in kinetic energy, and vice versa.

It's worth noting that this explanation assumes an idealized scenario without considering other factors like resistance or dissipative forces, which may affect the conservation of energy to some extent in real-world situations.

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Explanation:

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (63 m/s − 25 m/s) / (17 s − 6 s)

a ≈ 3.45 m/s²

Answer:

Explanation:

The apple also exerts an equal and opposite force on the earth but earth does not move because the mass of apple is very small,due to which the gravitational force produces a large acceleration in it (a=F/m) and we can see the apple falling towards the earth but the mass of earth is very large,the same gravitational .

The two violet lines of hydrogen gas with wavelengths 434 nm and 410 nm in the third-order spectrum of a diffraction grating with 145 slits per centimetre would be expected at angles of approximately 1.09 radians and 1.22 radians, respectively.

Diffraction gratings are used to disperse light into its constituent wavelengths and measure their spectra. The number of slits per centimetre on the grating determines the angular spacing between the diffracted wavelengths. In this case, a diffraction grating with 145 slits per centimetre is used to measure the spectrum of hydrogen gas, which emits violet lines at wavelengths 434 nm and 410 nm. The third-order spectrum corresponds to diffracted wavelengths that are three times the spacing between the slits. Using the equation for diffraction grating, the angles at which these violet lines are expected to appear in the third-order spectrum can be calculated as approximately 1.09 radians for the 434 nm line and 1.22 radians for the 410 nm line.

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The total cost of the energy consumption for the given time period is $0.0364

The given parameters include;

The total energy consumed in the process of heating the water;

Total electrical Energy  = Energy of the heater (kWh) + Energy of the heated water (kWh)

Energy of the heater (kWh) = power x time

                                = 4 kW x 0.067 h

                                 = 0.268 kWh

Energy of the heated water (J) = mcΔt

where;

Δt is the change in temperature = t₂ - t₁

                                                      = 50 ⁰C  -  20 ⁰C = 30⁰C

Energy of the heated water (J) = 1 x 4200 x 30

                                               = 126,000 J

Electrical power of the heated water (Watts) = \(\frac{126,000 \ J}{4 \ \min} \times \frac{1 \min}{60 \ s} = 525 \ W\)

Energy of the heated water (kWh) = \(\frac{525}{1000} \times 4\min\times \frac{1 \ hr}{60 \min} = 0.035 \ kWh\)

Total electrical Energy  = 0.268 kWh  +  0.035 kWh

                                       = 0.303 kWh

The total cost of the energy consumed is calculated as;

\(Total \ cost = \frac{\$ \ 0.12}{kWh} \times 0.303 \ kWh = \$ \ 0.0364\)

Therefore, the total cost of the energy consumption is $0.0364

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Answer:

C. Bacteria

Explanation:

Bacteria and archaea are the two domains which consist of organisms with prokaryotic cells. Prokaryotic cells are cells without nuclei or membrane-bound organelles.

The comets that are now in the Kuiper Belt originally formed in the outer solar system beyond the orbit of Neptune.

The Kuiper Belt is a region of the solar system beyond the orbit of Neptune and it contains many small icy bodies including comets.

The Kuiper Belt is a region of the solar system beyond the orbit of Neptune.

It is believed to contain many small icy bodies, including comets.

The Kuiper Belt is located in the outer solar system and extends from the orbit of Neptune (at 30 astronomical units) to approximately 50 astronomical units from the Sun.

It is named after Dutch-American astronomer Gerard Kuiper, who predicted its existence in 1951.

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Answer:

temperiture or annual wind speed.

Explanation:

Answer:

0.39 J/g°c

Explanation:

= heat / unit of mass × unit of temperature

986.75J/16.75g

= 58.9 J/g

∆T=175°c - 25°c = 150°c

986.75 / 150°c = 6.578

986.75 / 16.75g.150°c = 0.30 j/g°c

Along a string, a sinusoidal axial wave is moving in the opposite direction of the x-axis.

A wave is an energetic perturbation in a material that doesn't include any net particle motion. Elastic deformation, a change in pressure, an electric or magnetic strength, an electric potential, or a change in temperature are a few examples. a disruption or variation that causes energy to be transferred gradually from one point to another in a medium; it can be a different from place to place or a change in pressure, external electromagnetic strength, electrostatic force, or temperature.

The pressure of soil against a wall; the application of force to a surface by an item, liquid, or., in contact with it. Physics. power.

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Answer:

equator

Explanation:

The diameter of earth is largest when measured around the equator, due to the equatorial bulge.

The equatorial bulge is a phenomenon caused by the Earth's diameter being wider in the Equator.

A straight line with its endpoints located on the edge of the circle and its center is used to calculate the diameter of a circle. Latitudes like the equator and the Arctic Circle have diameters that can be calculated by scientists.

The Equator is the place on Earth where it is the broadest. At the equator, the circumference of the Earth is 40,075 km.

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Answer:

push on objects force is required. pull force is resli8