Who invented the first practical incandescent light bulb?.

Answer:

8100 g

Explanation:

8.1 kg × 1000

= 8100 g

Answer:

8,100 Grams

Explanation:

To change Kilograms to Grams, you multiply the mass value by 1000.

So, 8.1kg x 1000 = 8,100g.

Hope this helps!

Answer:

Accept electron flow

Explanation:

The battery gives a change in the potential and the light bulb works like a resistor, so we will need a material that allows the flow of current. Therefore, we need a material that has the ability to accept electron flow.

So, the answer is:

Accept electron flow

The electric charge on the rod is no longer separated.

If the magnetic field is parallel to the position of the exposed surface the magnetic flux produced will be zero if the magnetic field is non-zero. If a charged particle moving parallel to the magnetic field has a velocity parallel to the magnetic field, then the force is zero In the above case the velocity is parallel to the magnetic field lines, so the magnetic force is zero.

Induced currents can be created by changing the strength of the magnetic field changing the size of the wire loop, or changing the direction of the wire loop. The main difference between magnetic flux and flux density is that magnetic flux is a scalar quantity whereas flux density is a vector quantity. Flux is the scalar product of flux density and area vector.

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Answer:

The equation a=F/m or the acceleration is equal to the net force of an object divided by that object's mass, is an equation derived and explained by Sir Issac Newton's second law of motion. Newton's second law of motion states that the force of an object is equal to the mass times the acceleration of that object.

Answer:

Alternating

Explanation:

Edge 2020

The change in standard Gibbs free energy (∆G°) of the reaction FDP → DHAP + G3P in a red blood cell at 25°C is approximately 31.3 kJ.

The change in standard Gibbs free energy (∆G°) of a reaction can be calculated using the equation:

∆G° = -RT ln(K)

Where R is the gas constant (8.314 J/mol·K), T is the temperature in Kelvin (25°C = 298 K), and K is the equilibrium constant of the reaction. In this case, since the reaction is FDP → DHAP + G3P, the equilibrium constant (K) can be calculated using the concentrations of the species:

K = ([DHAP] [G3P]) / [FDP]

Substituting the given concentrations ([FDP] = 35 µM, [DHAP] = 130 µM, [G3P] = 15 µM) into the equation, we can calculate the value of K. Then, by plugging the values of R, T, and K into the equation for ∆G°, we can determine the change in standard Gibbs free energy of the reaction.

If the ∆G° value is negative, it indicates that the reaction is spontaneous in the forward direction. However, in this case, the calculated ∆G° value is positive (approximately 31.3 kJ), indicating that the reaction will not occur spontaneously in the red blood cell. External energy input or coupling with another favorable reaction would be necessary to drive the reaction forward in the cell.

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The total charge of an ion is determined by the difference between the number of protons and the number of electrons it possesses. Protons have a positive charge, while electrons have a negative charge.

The elementary charge, denoted as e, is the charge of a single electron.

In the given case, the oxygen ion has 8 protons and 7 electrons. Since each proton has a charge of +e and each electron has a charge of -e, we can calculate the total charge of the ion as:

Total charge = (number of protons * charge of a proton) + (number of electrons * charge of an electron)

= (8 * +e) + (7 * -e)

= 8e - 7e

= e

Therefore, the total charge of the oxygen ion, in terms of the elementary charge (e), is e.

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Answer:That only applies to highly polished surfaces, eg mirrors.

If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.

As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.

Explanation:

(a) Random means that the exact time at which a given radioactive nucleus will decay cannot be predicted, as it is subject to a probabilistic process. Spontaneous means that the decay process occurs without any external stimulus or trigger, and is driven solely by the instability of the nucleus itself.

(b) To calculate the binding energy per nucleon for uranium-238, subtract the mass defect (measured in atomic mass units, or amu) from the total mass of the nucleus (238 amu) and divide by the number of nucleons (238). This yields a value of 7.57 MeV/nucleon.

To calculate the ratio of kinetic energy of the alpha particle to the kinetic energy of the thorium nucleus, use the conservation of energy. The energy released in the decay is 4.27 MeV, so this must be equal to the sum of the kinetic energies of the alpha particle and the thorium nucleus. Solving for the ratio yields 0.441, or approximately 44%.

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Answer: He's a superhero in a fictional world

Explanation: Superheroes, such as Superman and Flash, defy physics because they were created as a form of entertainment. The DC world isn't realistic. Don't think too much on it.

Given,

The mass of the car, m=1000 kg

The velocity of the car, v=20 m/s

The kinetic energy of an object is the energy of the body possessed due to its motion. The kinetic energy of a body is directly proportional to the square of the velocity of the object.

The kinetic energy of the car is given by,

On substituting the known values,

Thus the kinetic energy of the given car is 200 kJ.

The volume of the tank was not given, so it cannot be determined in this problem.

To determine the mass of oxygen that has been withdrawn from the tank, we can use the ideal gas law equation:

PV = nRT

Where:
P is the pressure in atm,
V is the volume in litres,
n is the number of moles,
R is the ideal gas constant (0.0821 L·atm/mol·K),
T is the temperature in Kelvin.

First, let's find the initial number of moles of oxygen in the tank:

P1 = 40.0 atm (initial pressure)
V1 = unknown (volume of the tank)
n1 = unknown (initial number of moles)
T = constant

Next, let's find the final number of moles of oxygen in the tank:

P2 = 25.0 atm (final pressure)
V2 = V1 (since the volume remains constant)
n2 = unknown (final number of moles)
T = constant

We can rearrange the ideal gas law equation to solve for the number of moles:

n = PV / RT

Using this equation, we can find the initial number of moles (n1) and the final number of moles (n2). The mass of oxygen withdrawn from the tank is the difference between the initial and final number of moles, multiplied by the molar mass of oxygen (32 g/mol).

Calculate the initial number of moles of oxygen (n1) using the initial pressure (P1), volume (V1), and temperature (T).
Calculate the final number of moles of oxygen (n2) using the final pressure (P2), volume (V2), and temperature (T).
Calculate the mass of oxygen withdrawn from the tank by subtracting n2 from n1, and then multiplying by the molar mass of oxygen (32 g/mol).

The volume of the tank was not given, so it cannot be determined in this problem. Therefore, the calculation will be done in terms of moles and not mass.

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A magnet will attract an ordinary nail or paper clip because they are made of ferromagnetic materials, which are materials that can be magnetized and are strongly attracted to magnets. When a magnet is brought near a ferromagnetic material, it creates a magnetic field within the material, causing the material to become magnetized and creating an attractive force between the two.

On the other hand, a wooden pencil is not a ferromagnetic material and is not attracted to magnets. Wood is composed mainly of non-magnetic materials such as cellulose, hemicellulose, and lignin, which are not affected by magnetic fields. Therefore, the magnet will not create a magnetic field within the pencil, and there will be no attractive force between the two.

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Answer:

3.85 V

Explanation:

The potential difference between two points can be calculated using the following equation

Where E is the energy and Q is the charge. So, replacing E = 250 J and Q = 65 C, we get:

Therefore, the potential difference is 3.85 V

Answer:

Specific heat capacity, c = 468.75 J/Kg°C

Explanation:

Given the following data;

Power = 1.5 kW to Watts = 1.5 * 1000 = 1500 Watts

Time = 5 seconds

Mass = 0.2 kg

Initial temperature = 20°C

Final temperature = 100°C

To find specific heat capacity;

First of all, we would have to determine the energy consumption of the kettle;

Energy = power * time

Energy = 1500 * 5

Energy = 7500 Joules

Next, we would calculate the specific heat capacity of water.

Heat capacity is given by the formula;

\( Q = mcdt\)

Where;

dt = T2 - T1

dt = 100 - 20

dt = 80°C

Making c the subject of formula, we have;

\( c = \frac {Q}{mdt} \)

Substituting into the equation, we have;

\( c = \frac {7500}{0.2*80} \)

\( c = \frac {7500}{16} \)

Specific heat capacity, c = 468.75 J/Kg°C

The resultant normal load on the beam is 31.42 N. Assuming that the circular beam is made of a homogeneous material with a constant cross-sectional area and the load is applied uniformly on its circumference, we can use the following equations to obtain the resultant moment and shear force:

1. Resultant moment (M):
M = (pi/2) * q * r^2 * sin(2O)
where q is the load intensity per unit length of the beam, r is the radius of the beam, and O is the angle of the load measured from a reference direction (e.g. the x-axis).

2. Resultant shear force (V):
V = 2 * q * r * cos(O)
where factor 2 accounts for the load being applied on the entire circumference of the beam.

To apply these equations to your specific case where O=10 degrees, we need to know the load intensity q and the radius r of the beam. Let's assume that q = 10 N/m and r = 0.5 m (you can adjust these values based on your specific scenario). Then, we can plug these values into the above equations to get:

M = (pi/2) * 10 * 0.5^2 * sin(2*10) = 1.25 Nm
V = 2 * 10 * 0.5 * cos(10) = 19.32 N

Note that the moment is a vector quantity with a direction perpendicular to the plane of the beam, while the shear force is a vector quantity with a direction tangential to the beam circumference.

Finally, to obtain the resultant normal load on the beam, we need to use the equation for the total force acting on the beam:

F = 2 * pi * r * q
where the factor 2pi accounts for the load being applied on the entire circumference of the beam. Plugging in our assumed values of q and r, we get:

F = 2 * pi * 0.5 * 10 = 31.42 N

Therefore, the resultant normal load on the beam is 31.42 N.

Here is a step-by-step method to find the resultant moment and shear force for a normally distributed load applied on a circular beam when O=10 degrees;
1. Determine the magnitude of the distributed load (w) acting on the circular beam.
2. Calculate the length of the circular beam segment (L) that is affected by the distributed load.
3. Find the total normal load (N) on the beam, which can be calculated using the formula N = w * L.
4. Determine the location of the resultant normal load on the beam.
5. Calculate the shear force (V) at the point of interest. This can be calculated using the formula V = N * sin(O), where O = 10 degrees.
6. Calculate the moment (M) at the point of interest. This can be calculated using the formula M = N * L * cos(O).

By following these steps, you will obtain the resultant moment and shear force for the normally distributed load applied on the circular beam when O=10 degrees and the resultant normal load on the beam.

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Answer:

lightning KILLUAAAA

Answer:

3.5 Hours

Explanation:

I believe all that has to be done is dividing 84 by 24, which results in 3.5, or 3 and a 1/2 hours.

Answer:

the answer is A

Explanation:

I took the test

Answer:

A

Explanation:

The wavelength of the earthquake that shook you with a frequency of 10 Hz and reached a city 84 km away in 12 s is approximately 500 meters.

To determine the wavelength of an earthquake that shakes you with a frequency of 10 Hz and reaches a city 84 km away in 12 s, we can use the equation:

wavelength = speed / frequency

The speed of an earthquake wave depends on the medium it travels through. In this case, we will assume that the wave is traveling through the Earth's crust, where the average speed of seismic waves is about 5 km/s.

First, we need to calculate the time it took for the earthquake wave to travel 84 km:

distance = speed x time

84 km = 5 km/s x time

time = 16.8 s

Now we can use the formula to find the wavelength:

wavelength = speed / frequency

wavelength = 5 km/s / 10 Hz

wavelength = 0.5 km or 500 m

Therefore, the wavelength of the earthquake that shook you with a frequency of 10 Hz and reached a city 84 km away in 12 s is approximately 500 meters.

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According to the given statement , the next charge on the object with an excess of 2.15 x 10²⁰ protons is 3.44 C (coulombs).

The next charge on an object can be determined by considering the excess protons it has. Each proton has a charge of +1.6 x 10⁻¹⁹ coulombs.

Given that the object has an excess of 2.15 x 10²⁰ protons, we can calculate the total charge by multiplying the number of protons by the charge of each proton:

Total charge = (2.15 x 10²⁰ protons) * (1.6 x 10⁻¹⁹ C/proton)

To perform this calculation, we can use scientific notation. When multiplying numbers in scientific notation, we add the exponents and multiply the coefficients:

Total charge = 2.15 * 1.6 x 10²⁰ * 10⁻¹⁹ C

Now, let's simplify the multiplication:

Total charge = 3.44 x 10 C

The next charge on the object with an excess of 2.15 x 10²⁰ protons is 3.44 C (coulombs).

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Answer:

its warmer than outside in winter and its colder than outside in summer

Explanation:

The perception of warmth or coolness is relative to the temperature difference between the body and the environment. Even though the temperature inside the room remains constant year-round, the relative temperature difference between the environment outside and the room can cause a subjective sensation of warmth or coolness.

Temperature is a physical quantity that measures the degree of hotness or coldness of a body or a substance. It is a scalar quantity, which means it has only a magnitude and no direction.

The SI unit of temperature is the Kelvin (K), but the temperature is commonly measured in degrees Celsius (°C) or degrees Fahrenheit (°F) as well.

The temperature difference is the numerical value of the difference between the temperatures of two objects or substances. It represents the amount of heat that flows from one object to another due to the temperature gradient between them. The temperature difference is also a scalar quantity, and its unit is usually expressed in degrees Celsius or Kelvin.

The temperature difference is important in many areas of science and engineering, including thermodynamics, heat transfer, and meteorology. It is also used to measure the efficiency of heating and cooling systems, such as air conditioners and refrigerators.

Here in this question,

This phenomenon occurs due to the relative difference in temperature between the environment outside and the temperature inside the room. The feeling of warmth or coolness is a subjective sensation that depends not only on the actual temperature but also on the difference in temperature between the person's body and their surroundings.

During the winter, the temperature outside is generally colder than the temperature inside the room which is kept at a constant temperature. When a person comes into the room from the cold outside, their body temperature is lower than the room temperature, so they feel warmer inside the room. This is because the heat from the warm room transfers to the person's body, raising their body temperature and making them feel warmer.

On the other hand, during the summer, the temperature outside is usually warmer than the temperature inside the room. When a person comes into the room from the hot outside, their body temperature is higher than the room temperature, so they feel cooler inside the room. This is because the heat from the person's body transfers to the cooler room, lowering their body temperature and making them feel cooler.

Therefore, the relative temperature difference between the environment outside and the room can cause a subjective sensation of warmth or coolness.

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Answer:

One scientific law that provides the foundation for understanding in chemistry is the law of conservation of matter. It states that in any given system that is closed to the transfer of matter (in and out), the amount of matter in the system stays constant.

Explanation:

hope it helps ya

Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

Answer:

The net force acting on the object is 0 N

Explanation:

Newton's Second Law of Forces

The net force acting on a body is proportional to the mass of the object and its acceleration.

The net force can be calculated as the sum of all the force vectors in each rectangular coordinate separately.

The image shows a free body diagram where four forces are acting: two in the vertical direction and two in the horizontal direction.

Note the forces in the vertical direction have the same magnitude and opposite directions, thus the net force is zero in that direction.

Since we are given the acceleration a =0, the net force is also 0, thus the horizontal forces should be in equilibrium.

The applied force of Fapp=10 N is compensated by the friction force whose value is, necessarily Fr=10 N in the opposite direction.

The net force acting on the object is 0 N

Let's calculate T = 275 (-23.0 - 0.200) and T = -6380 N using the formulas T - W = m a, T = W + ma, and T = m (g + a). B) Network is weight work less stress work. W = F d, T-W d, m a d, (275- 0.200) 23, W = 270.4 J

The tension formula is expressed as. T=mg+ma. where T is tension and g is the gravitational acceleration (9.8 m/s2). The load's mass is M = 275 kg, and its acceleration is a = 0.12 g. Let T represent the cable's tension. The load accelerates upwardly as well as being raised vertically. Because of this, according to Newton's laws, T = M ( g + a ) = 275 1.12 9.8 = 3018.4 N

According to sign convention, the task that the cable has done W = F. d, W = F d cos 180, W = -285 22.0, W = 2.79 103 J The work done by the weight is up and the weight points down, therefore the angle is 180o. W = T d cos 0 W = 2838.6 22.0 W = 6.22 104 J d)

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