Explain a reaction takes place in a perfectly sealed and insulated container, then the total energy of the system is decreased or not.

Q: Determine the electric potential difference between the labeled points A and B.

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Q: What is the electric force from the rod on the point charge Q? Suppose that Q=16.9 nC and L= 4.27…

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Q: A train accelerates from 10. Km/h to 110 km/h in 2 minutes/15 seconds . Find its acceleration in…

A: Given data:   Initial velocity (u) = 10 km/h Final velocity (v) = 110 km/h Time (t) = 2 min 15 sec…

Q: can you please find one example of light as a particle or wave.

A: Example of light as a particle : Photoelectric effect Photons hits the surface of the material and…

Q: Part of the journey of a bus is captured using a motion detector and displayed on the graph shown.…

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Q: A car traveling 56.0 km/h is 24.0 m from a barrier when the driver slams on the brakes. The car hits…

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Q: Given the following descriptions, identify the direction (for example, east, west, northwest) in…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the…

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Q: What is the X-ray charge? Positive, negative, without charge, negative and

A: Concept: The X ray are electromagnetic radiation. Electromagnetic radiation is the photon. And the…

Q: A 0.52-kg mass suspended from a spring undergoes simple harmonic oscillations with a period of 1.35…

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Q: Which measured quantity and its absolute error are rounded properly? Select one: Oa. (23.36 +/-…

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Q: Use the graph to answer the following questions. Answers have a 5% tolerance to allow for…

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Q: 2) It is a velocity-time graph for an object under constant acceleration. Determine the displacement…

A: Given      It is a velocity time graph for an object under constant acceleration.

Q: A sports car travels on a straight road at 22.0 km/h and increases its speed to 57.0 km/h in 5.0 s.…

A: Given: initial speed (u)= 22.0 Km/h            final speed (v) = 57.0 Km/h            time taken (t)…

Q: Charge Q₁ = 23.41 mC is placed R= 15 cm to the charge Q₂ = 82.73 mC, as shown in the figure. Both…

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Q: A football is kicked at 25.0 m/s at an angle of 29.0° above the horizontal. Assume it starts 1.00 m…

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Q: 3. What is the weight of a pound mass on the moon's surface, where the acceleration of gravity is…

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Q: What are the similarities of the Big Bang theory, steady-state theory and oscillating universe…

A: Big Bang theory A physics theory called the Big Bang event explains how the cosmos grew from a…

Q: The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value.…

A: Electricity cost  = $0.120 /kWh

Q: 6. A mass attached to a spring moves horizontally on a smooth surface. The position of the spring…

A: Given, s(t) = 8sin(t)  Position is (in cm)  And  Time is (in seconds)

Q: For the point light source of light, what is the irradiance measured at 1m and 2m from a 1W light…

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Q: Two coaxial cylindrical conductors are shown in perspective and cross-section above. The inner…

A: The radius a=2 cm=2×10-2 m The length L=10 m The total charge of Qinner =+8 nC1 nC=10-9 C The total…

Q: Each of the displacement vectors A and B shown in the figure below has a magnitude of 7.0 m.  A.…

A: The physical quantities present in the world are broadly classified into 2 types. They are scalars…

Q: A 65.3 kg baseball player is running to second base at 5.03 m/s. When he is 4.80 m from the plate he…

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Q: The velocity of a particle moving in the x-y plane is given by (7.480 +6.64) m/s at time t = 6.53s.…

A: The formula a = dv/dt could be used here to solve for the final velocity.

Q: A particle moving in the x-y plane has a position vector given by r- 1.67t2i+1.44t³j, where r is in…

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Q: A player shoots a basketball as shown below. R equal to less than equal to less than equal to S…

A: Given,

Q: 3) It is a velocity-time graph for an object under constant acceleration. Determine the displacement…

A: A velocity time graph indicates the velocity of an object at different time intervals Since velocity…

Q: The depletion region is a result of the following events except? O a. Recombination of carriers near…

A: Depletion region is formed by removal of all charge carriers .

Q: An unknown element X has the following isotopes: 14⁰X (89.00% abundant) and 142X(11.00% abundant).…

A: the average atomic mass of isotope can be calculated by- summation over atomic mass* fraction of…

Q: A 50.0-g Super Ball traveling at 29.5 m/s bounces off a brick wall and rebounds at 16.0 m/s. A…

A: Given data:  Initial velocity (u) = -29.5 m/s Final velocity (v) = 16.0 m/s Time interval (Δt) =…

Q: A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s2 for 14.0 s. It…

A: We have a train that starts from rest (initial velocity u=0) and accelerates at a rate a1=1.6 m/s2…

Q: 3. As two trains move along a track, their conductors suddenly notice that they are headed toward…

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Q: 2. A half-value thickness of shielding will reduce the number of gamma rays to what fraction of its…

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Q: 0.2 eV 0.9 eV 1.1 eV A metal with a work function of 3.5 electron volts is exposed to photons of…

A: work function of metal (Wo) = 3.5 eV energy of incident photons (E) = 3.7 eV

Q: Consider bromine, which occurs as a mixture of two isotopes: bromine-79, with a natural of 50.7% and…

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Q: A particle moving in the x-y plane has a position vector given by r = 0.55t²i+ 1.35t³j, where r is…

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Q: A trolley of mass 2kg is pulled by a force of 6N accelerated at 2m/s what is the magnitude of the…

A: Trolly is pulled by a force  F=6 N Mass of trolley M=2 kg Acceleration of trolley a=2 ms Retarding…

Q: A small particle P starts from point O with a negligible speed and increases its speed to a value v…

A: Given, The initial speed of the particle, v = 2gy x = 46 ft y = x122 ft

Q: Which of the following statements about the given vectors is FALSE? Please refer to the picture for…

A: According to question we need to choose false statement for given vectors .

Q: A car is traveling around a circular track of 760-ft radius. If the magnitude of its total…

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Q: A  student throws a broken cellphone with a velocity of 100.0 m/s at 60.0 degrees with the…

A: Given value--- initial velocity = 100 m/s angle = 60 degree . We have to find--- what is the…

Q: An airplane travels at 169 mi/h south for 2.00 h and then at 295 mi/h north for 636 miles. What is…

A: Given data:  Speed (V1) = 169 mi/h, South t1 = 2.00 h Speed (V2) = 295 mi/h, North d2 = 636 miles…

Q: Find the value of displacement if work done is 1200 J and Force applied is 55 N

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Q: A man of mass 75kg stands on a weighing machine in a lift. Determine the reading on the weighing…

A: Mass of man M=75 kg The lift moves upwards with acceleration  a=2 ms2.

Q: When a voltage is applied to a conductor, the current that flows is limited by resistance.  Which of…

A: When a voltage is applied to a conductor, then due to potential difference created across the ends a…

Q: A 10,000 kg railroad car is rolling at 2.00 m/s when a 4000 kg load of gravel is suddenly dropped…

A: Given data, Mass of car without gravel m1=10000 kg Mass of gravel mg=4000 kg The initial speed of…

Q: To create artificial gravity, the space station shown in the drawing is rotating at a rate of 2.20…

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Q: 5) Consider a resistor of 502 in series with a pair of parallel resistors, one of which is known to…

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Q: What is the atomic number for an element whose mass number is 92, which contains 52 neutrons per…

A: Given data:  Mass Number (A) = 92 Number of neutrons (N) = 52 Required: The atomic number (Z)

Radioactive decay

The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.

Artificial Radioactivity

The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.