When we measure the rate of radioactivity of a given isotope 60 days after making an initial measurement, we discover that the rate has dropped to one-sixteenth of its initial value. What is the half-life of this isotope? The half-life of the isotope is

Q: longitudinal versus transverse waves.

A: A wave is a disturbance or oscillation that travels through space-time, accompanied by a transfer of…

Q: Find the magnitude of the resultant of these given vectors: a={2,-3,10} b= {6,5,- 3}

A: Given data:  Two vectors  a = {2, -3, 10} b = {6, 5, - 3} Required: The magnitude of the resultant…

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Q: Which of the following is NOT a similarity between magnets and electrical charges? There are…

A: Force between like poles  or like charges  are repulsive  in nature and between unlike poles or…

Q: Why is the torque associated with T1 negative when it produces a counterclockwise rotation, and the…

A: torque associated with T1 negative when it produces a counterclockwise rotation, and the torque…

Q: What is the p of a man of mass 75 kg when he walks with a uniform velocity of 2 m/s.

A: Given data:  Mass (m) = 75 kg Uniform velocity (v) = 2 m/s Required: Momentum (P)

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A: We know that the newton's second is given as Fnet= ma where m is the mass. a is the acceleration of…

Q: ii) Approximately what is the value of mass number A for a nucleus whose radius is 3.6 x 10-15 m ?…

A: Given Radius = 3.6 × 10-15 m

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Q: 4.14 PQ1 Acceleration is the rate of change of velocity with time. Is the acceleration vector always…

A: Given statement : Acceleration is the rate of change of velocity with time Let the initial velocity…

Q: About 32% of the body of a person floating in the Dead Sea will be above the water line. Assuming…

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Q: The prism in the figure below is made of glass with an index of refraction of 1.59 for blue light…

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Q: Find the angle (direction) of the resultant of these given vectors: a: 3i +6j b: 7i-3j

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Q: The density of ice is 917 kg/m^3, and the approximate density of the seawater in which an iceberg…

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Q: Activity 1: What do you know on Gauss's Law? Direction: Answer the following questions correctly. 1.…

A: According to Gauss law when there is charge placed inside a closed surface ,then electric flux pass…

Q: 3. Between a push cart and a pull cart, which requires the greater "effort"? For consistency, both…

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Q: When a peanut is placed 12.3 cm away from the center of a concave mirror, its image is located 55.1…

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Q: 2.00 kg and a block of 6.00 kg are connected by a massless string over a pulley in the shape of a…

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Q: Four 1.5 V cells are connected in series to a 12 ohm light-bulb. If the resulting current is 0.45 A,…

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Q: A car is moving on a straight road 10.5 m/s. It is acceleration at 22 m/s² . What will be it's…

A: Given data :   Acceleration  =   a   Time  =  t   Initial velocity  =  u      To find :…

Q: R1 I2 Loop 1 I3 R2 R3 a C |I5 Loop 2 R5 Loop 3 R4 V1 d Set the DC source voltage to 10.0 V. Set R1 =…

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Q: 2. A spacecraft traveling at 1200 m/s is uniformly accelerated at the rate of 150 m/s² by burning…

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Q: 4. [8pt] Assume the three docks (m1=2 kg, m2 = 3 kg, m3=1 kg) portraye d in the ri ght a…

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Q: 2. A 2 kilogram ball is being dropped from a roof that is 15 meters off of the ground. What is the…

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Q: Three resistances each of 32 are connected as shown in figure. The resultant resistance between A…

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Q: A turntable (disk) of radius r = 27.0 cm and rotational inertia 0.440 kg · m2 rotates with an…

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Q: Need some help. A solenoid is created by winding wire with n turns per unit length around a…

A: Given A solenoid having n number of turns per unit length, with length ℓ and cross -sectional area.

Q: A ray of light strikes the midpoint of one face of an equiangular (60°–60°-60°) glass prism (n =…

A: Refraction Through Triangular Prism In a  Triangular glass prism, light ray pass in the first face,…

Q: 1. A steel wire of length 4.7 m and cross section 3.0 x 10 m2 stretches by the same amount as a…

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Q: An object is being acted upon by three forces and the entire system is static. One force is 13 N…

A: Solution: Given that Fx = 13 N Fy = 63 N the object is in static

Q: Having become stranded in a remote wilderness area, you must live off the land while you wait for…

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Q: The electromagnetic wave of the radiation field from a wire antenna travels toward the plane of your…

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Q: A uniform thin rod of length 0.48 m and mass 3.5 kg can rotate in a horizontal plane about a…

A: Given data: The length of rod is l=0.48 m. The mass of rod is M=3.5 kg. The mass of bullet is m=3.2…

Q: 3. Determine the temperature of the field winding of a series motor when its resistance had…

A: Final Resistance R2 = 240 Ω Initial Resistance R1 = 120 Ω Initial Temperature T1 = 15°C Temperature…

Q: A 220-turn solenoid having a length of 25 cm and a diameter of 10cm carries a current of 0.29A.…

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Q: A charge of 2 µC is 0.5m from a charge of 3µC. Find the electric force.

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Q: Express your answer in two decimal places then box your final answer. Please answer in GRESA. Thank…

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Q: 7. Two isolated and widely separated conducting spheres each carry a charge of -Q. Sphere 1 has a…

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Q: Two guitarists attempt to play the same note of wavelength 6.48 cm at the same time, but one of the…

A: Answer:-  Given  Wavelength (lambda1) = 6.48 cm  Wavelength (lambda2) = 6.53 cm  Speed of sound (V)…

Q: 61. (a) Determine the acceleration of the center of mass of a uniform solid disk rolling down an…

A: We have to find the acceleration of centre of mass

Q: Problem 1: You construct an oscillating LC circuit with inductance 18 mH and capacitance 1.1 uF.…

A: Part (a) Answer is 75464 Hz or, 75.46 KHz

Q: The body in the figure is pivoted at O. Three forces act on it in the directions shown: FA = 9.30 N…

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Q: The dimension of 1/2ɛ,E?(ɛ, permittivity of free space; E: electric field) is?

A:

Q: Find the angle between vector a and b if a 21 +j- k and b 3i - 6j + 2k

A: a→ = 2i^ + j^ - k^b→ = 3i^ - 6j^ + 2k^

Q: ) Two-block system is given below. The mass of block one is m, = 4 kg and the mass of block two is…

A: As per our guidelines we will solve first three subparts for you. To get remaining subparts solved…

Q: Calculate the work done by a 47 N force pushing a pencil 0.26 m.

A: Write the given values with the suitable variables. F=47 Nd=0.26 m Here, F is the force and d is the…

Q: Which equation best describe permittivity (ɛo)? * 1 9192 U 4πεο d O ɛ0 = Ud /4tnq1q2 ɛ0 = 4TtUd…

A:

Q: 4.15 PQ For a rotating body, is the acceleration toward the center of rotation a centripetal or…

A: Answer:-  Centripetal acceleration :- The acceleration of a body traversing in a circular path.…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.