black body is a poor ____of heat​

Answer:

Publish her discovery for other scientists to test.

Explanation:

In the context, Dr. Jones, a famous scientist conducted some experiment and has been working hard on it. She recently discovered some new information and facts about gravitation.

Now the best way to communicate and show her new discovery and results on gravity with the other scientist is to publish her findings in a famous science journal so that other scientist can work on it and make some test to find the same results.

By doing this, other scientist can work on her idea and she can tell and communicate her discovery with the other scientist and physicists.  

The heat equation is Q = mcT

Q is the total amount of heat transferred to or from something.

The earth's acceleration toward the apple is 6.064×10⁻²⁵ m/s²

What is acceleration?
The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. It is a vector quantity to accelerate (in that they have magnitude and direction). The direction of the net force acting on an object determines the direction of its acceleration. According to Newton's Second Law, the amount of an object's acceleration is the combined result of two causes:

The amount of the net resultant force, which is directly proportional to the sum of all external forces acting on that object;
Depending on the materials used to create it, an object's mass is inversely related to its magnitude.

Force on earth = 0.37×9.8 = 3.626N.

Acceleration of earth = 3.626/5.98×10²⁴ = 6.0635×10⁻²⁵  m/s²

Therefore, The earth's acceleration toward the apple is 6.064×10⁻²⁵ m/s²

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Theta = position angle, t = time, and w = angular velocity, where w = angular velocity, theta = position angle, and t = time. Angular velocity is the rate of change of an object's position angle with respect to time.

Thus, An object's rate of rotation and direction of rotation are both described by its angular velocity.

It is customary for the positive direction to be in the counterclockwise direction. Here are some angular velocity issues for practice. The ratio of the angular displacement () to the time of motion, for a constant angular velocity, is the angular velocity.

Angular velocity only applies to things that are moving in a circular motion, making it less frequent than linear velocity.

A racecar on a circular track, a roulette ball on a wheel, or a Ferris wheel are a few examples of objects with angular motion.

Thus, An object's rate of rotation and direction of rotation are both described by its angular velocity.

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The explanation is incorrect because the grains of wood cannot shrink because they remain the same size and cannot shrink.

Due to thermal expansion, cabinet doors look smaller in winter. In the summer heat expansion occurs and the wood expands. Wood does not expand in winter because there is no thermal expansion.

Thermal expansion is the tendency of a substance to change shape, area, volume, and density in response to changes in temperature, usually without a phase transition. Temperature is a monotonic function of the average molecular kinetic energy of matter.

Thermal expansion is used in many different applications. B. Track buckling, engine coolant, mercury in thermometers, swelling in joints, etc

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The type of light that best illustrates the photoelectric effect is (c) ultraviolet light. Hence, the correct answer is option c).

Photoelectric effect refers to the emission of electrons from a metallic surface when a light of suitable frequency shines on the surface of the metal. The phenomenon, first noticed by Heinrich Hertz in 1887, was explained in 1905 by Albert Einstein when he used Planck's hypothesis to illustrate that light energy is carried in discrete quantized packets to describe the photoelectric effect.

In relation to photoelectric effect, the type of light that best illustrates it is ultraviolet light. This is because ultraviolet light has a high enough frequency to remove electrons from the metal surface. As a result, electrons that absorb photons with enough energy from the ultraviolet region of the electromagnetic spectrum will be ejected from the metal, causing the photoelectric effect, and producing an electric current.

When light is shone on a metallic surface, an electric current is produced, which is called the photoelectric effect. The photoelectric effect is caused by the emission of electrons from a metal surface that is exposed to a light of suitable frequency. The energy of the electrons depends on the frequency of the light, and the intensity of the light determines the number of electrons ejected from the surface.

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Answer:

Magnifying glass and a Petri dish.

Explanation:

The statement best describes the difference between a substance with a pH of 3.0 and a substance with a pH of 6.0 is - The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.

pH is the scale or measure for the substance about its acidic or basic strength. It ranges from 0 to 6.9 which is acidic and 7.1 to 14 which is basic.

Acidic substance has high concentration of Hydrogen ions whereas, basic substance has low concentration of hydrogen ions, however for the OH⁻ ions it is reverse.

pH = -log(\(H^{+}\)) then,  

=> 3 = -log (\(H^{+}\))

=> \(H^{+}\) =  (for pH = 3)  

=> pH = -log(\(H^{+}\))

=> 6 = -log (\(H^{+}\))

=> \(H^{+}\) = \(10^{-6}\) (for pH = 6)

 Thus, The substance with the lower pH (3) has 1000 times as many hydrogen ions per volume of water.

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Answer:

Alpha decay forms new element with two fewer protons and two fewer neutrons, Beta decay forms new element with one more proton and one fewer neutron. Gamma decay forms NO new element, but now the element has less energy because energy is released as gamma rays.

Explanation:

ANSWER AND EXPLAINATION:
Gamma decay differs from alpha and beta decay in several ways:

1. Particle emitted: In gamma decay, no particles are emitted. Instead, a high-energy photon called a gamma ray is released. Alpha decay involves the emission of an alpha particle, which consists of two protons and two neutrons. Beta decay involves the emission of either a beta-minus particle (an electron) or a beta-plus particle (a positron).

2. Mass and charge: Gamma decay does not change the mass or atomic number of the nucleus since no particles are emitted. Alpha decay reduces the atomic number by 2 and the mass number by 4, as an alpha particle is emitted. Beta decay changes the atomic number, with beta-minus decay increasing it by 1 and beta-plus decay decreasing it by 1. The mass number remains the same in beta decay.

3. Penetrating power: Gamma rays have the highest penetrating power among the three types of decay. They can pass through most materials and require dense shielding (e.g., lead or concrete) to attenuate them. Alpha particles have low penetrating power and can be stopped by a sheet of paper or a few centimeters of air. Beta particles have intermediate penetrating power and can be stopped by a few millimeters of aluminum.

4. Energy release: Gamma decay releases energy in the form of high-energy photons. Alpha decay releases a significant amount of energy since an alpha particle carries substantial kinetic energy. Beta decay releases energy in the form of the kinetic energy of the emitted beta particle.

gamma decay is a process that involves the emission of high-energy photons, while alpha and beta decay involve the emission of particles with mass and charge. Gamma rays have higher penetrating power and do not cause changes in the mass or atomic number of the nucleus, distinguishing them from alpha and beta particles.

Answer:

Gravity is a force that acts between the Earth's mass and the mass of other objects that surround it. The force of gravity can act across large distances

Explanation:

Electrons are one of the constituents of atoms. It is negatively charged particles and the atom has the same number of protons and electrons.

Matter is made up of atoms. Atoms are made up of protons, electrons, and neutrons. The protons are positively charged particles, electrons are negatively charged particles, and neutrons are neutrally charged particles. Protons and neutrons are present inside the atoms from the nucleus. The electrons are revolving around the nucleus due to attractive force.

The characteristics of the electrons are: Electrons are identified by J.J Thomson by using cathode rays. The electrons are negatively charged particles. The mass of an electron is 9.11×10⁻³¹Kg and the charge of an electron is 1.6×10⁻¹⁹C. They are the fundamental block of all atoms. Cathode beams are the source of electrons.

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Given the amount of work done in pushing the car over the given distance, the amount of force applied is 2400 Newtons.

Work done is simply defined as the energy transfer that takes place when an object is either pushed or pulled over a certain distance by an external force. It is expressed as;

W = F × d

Where f is force applied and d is distance travelled.

Given that;

W = F × d

60000kgm²/s² = F × 25m

F = 60000kgm²/s² ÷ 25m

F = 2400kgm/s²

F = 2400N

Given the amount of work done in pushing the car over the given distance, the amount of force applied is 2400 Newtons.

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Answer:

If you ring the doorbell and no one opens the door, you'll infer that no one is home rather than continuing to ring the doorbell to an empty house. Being able to understand this and look for another solution is another example of mental flexibility.

Explanation:

Explanation:

E=(mv²)/2 ΔE = E2-E1 = (m(v2²-v1²))/2 = ?

от этогo:

а) ΔE = 16 MДж

б) ΔE = 112 МДж

c) ΔΕ = 208 МДж

Answer:50mph

Explanation:

Answer:

Answer:

stationary in an electric field.

moving perpendicular to a magnetic field.

moving perpendicular to an electric field.

Explanation:

Negative charge: In physics, the term "negative charge" is defined as a phenomenon that consists of a surplus or different electrons in any field i.e magnetic or electric field.

However, the correct answer in the question above, would be:

"stationary in an electric field".

"moving perpendicular to a magnetic field".

"moving perpendicular to an electric field".

Answer:

Static Electricity

Explanation:

I think this is what your asking

Answer:

Force = 533.33N

Explanation:

Given the following data;

Power = 40000watt

Velocity = 75m/s

To find the force;

\( Power = force * velocity \)

Making force the subject of formula, we have;

\( Force = \frac {Power}{velocity}\)

\( Force = \frac {40000}{75} \)

Force = 533.33N

If a reverse transcriptase is present, Km and Vmax in a catalytically concept goes will be equal.

Here are four examples of medications that block enzymes: irreversible inhibitors like Acyclovir, which target the viral DNA-copying enzymes, are used to treat herpes. competitive inhibitors, such methotrexate, which treats bacterial infections as well as cancer. depression with non-competitive inhibitors like Trazadone.

An agent that challenges the substrate for the enzyme's active site is known as a competitive inhibitor. This response is often reversible.

The source concentration at which reaction is accelerating at half its maximal pace is known as the Michaelis Menten constant. It shows the enzyme's affinity for its substrate. Low Km denotes a strong affinity, while high Km denotes a low affinity.

A negative feedback system will increase Km by lowering the substrate's propensity to adhere towards the enzyme. At high substrate concentrations, the substrate outperforms the inhibitor, maintaining the reaction's Vmax.

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Answer:

where is the section?huh,I need to know

The power factor of the parallel combination of loads is approximately 0.999.

The power factor of the parallel combination of loads can be calculated by determining the total real power and total reactive power of the loads, and then calculating the power factor using the formula:

Power Factor = Total Real Power / Total Apparent Power

In this case, Load 1 absorbs 60 kVAR at a power factor of 0.85 lagging, Load 2 absorbs 90 kW and 50 kVAR leading, and Load 3 absorbs 100 kW at a power factor of 1.

To calculate the total real power, we add the real power of each load:

Total Real Power = 90 kW + 100 kW = 190 kW

To calculate the total reactive power, we add the reactive power of each load, taking into account the leading and lagging nature of the power factors:

Total Reactive Power = 60 kVAR - 50 kVAR = 10 kVAR

The total apparent power can be calculated using the formula:

Total Apparent Power = √(Total Real Power² + Total Reactive Power²)

Substituting the values:

Total Apparent Power = √(190 kW² + 10 kVAR²) ≈ 190.03 kVA

Finally, we can calculate the power factor:

Power Factor = Total Real Power / Total Apparent Power

Power Factor = 190 kW / 190.03 kVA ≈ 0.999

Therefore, the power factor of the parallel combination of loads is approximately 0.999, which is very close to unity (1) and indicates a nearly balanced and highly efficient power factor.

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Answer: i don’t know maybe later i will ask thAT question

Explanation:

a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

What is acceleration ?

acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Use the kinematic equation to solve for the acceleration:

v = u +at

v = final velocity

u = initial velocity

a = acceleration

t = time

In this instance, the final velocity is 0 because he comes to a stop. We can solve for the acceleration by plugging in the given values:

0 = 33 + (12)a

0 = 33 + 12a

-33 = 12a

-33 / 12 = a  --> a = -2.75 m/s²

b) Find the amount of distance necessary to stop. Use the formula:

v^2 = u^2 + 2ad

d = distance

Plug in the values:

0² = 33² + 2(-2.75 · d)

0 = 1089 - 5.5d

-1089 = -5.5d

d = 198 meters. Therefore, the squirrel would survive.

c)

Find the velocity at 100 meters by using the same formula as before:

v^2 = u^2 + 2ad

However, in this instance, we are solving for the final velocity. Plug in the given points to solve:

vf² = 33² + 2(-2.75 · 100)

vf² = 1089 + (-550)

vf² = 539

vf = √539

vf ≈ 23.22 m/s.

the car moving at 100 meters with a speed of 23.22m/s

a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

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Answer:

The magnetic field through the coil must change.

Explanation:

Answer:

a= 1 m/s^2

Explanation:

Average acceleration can be found by dividing the change in velocity by the time.

a= ΔV/t

The change in velocity is the difference of the final velocity and initial velocity.

ΔV= final velocity - initial velocity

The final velocity is 30 m/s and the initial velocity is 25 m/s

ΔV= 30 m/s- 25 m/s

ΔV= 5 m/s

The time is 5 seconds.

Now we know the two values.

ΔV= 5 m/s

t= 5 s

Substitute the values into the formula.

a= 5 m/s / 5 s

Divide.

a= 1 m/s/s

a= 1 m/s^2

The average acceleration of the car is 1 meter per second squared.