A 30-g sample of 5"Co is positioned in the core of a reactor with an average neutron flux of 1014 neutrons/cm2 sec. The absorption cross section of 59Co is 36 barns. The half-life of 60Co .is 5.3 years a- What is the activity of the sample ?after 7.0 years b- What is the maximum activity for ?the sample c- When does the sample activity ?reach 80% of its maximum activity

Q: Convert 40 N/cm2 to lb/in2

A: Given: The given value is a pressure P = 40 N/cm2.

Q: The speed 72 km/hour. What is the in-SI system of units?

A: The SI unit of speed is m/s.   Where m = meter,  s = second

Q: Two horses are pulling a barge with a mass 4000 kg along a canal, as shown in Figure 4.8 in the…

A:

Q: In the figure R₁ = 1200, R₂ = R3 = 55.00, R4 = 73.7 0, and the ideal battery has emf ε = 6.00 V. (a)…

A:

Q: What is the lagrangian of this system?

A:

Q: (b) What is Hall effect? Find the torque on a current carrying conducting rectangular loop of length…

A: Definition: When magnetic field is applied in a direction perpendicular to flow of current,…

Q: There are many exceptions to the Law of Conservation of Mass. True False

A: By the Law of Conservation of Mass, matter can neither be created nor be destroyed in a chemical or…

Q: how about if it 87%

A:

Q: In the figure R₁ = 11002, R2 = R3 = 38.00, R4 = 75.6 02, and the ideal battery has emf ε = 6.00 V.…

A:

Q: 6x² - 19 = 0

A: Solving the equation x² = 19/6

Q: The deck has a mass of 1000-kg and is supported by cables A, B, and C. What are the tensions in the…

A: We have given  that the mass of object is 1000 Kg. It is supported by three cables.  As there is no…

Q: 4. Discuss the application of physics in the field of textile. Briefly.

A: Physics plays an important role in textile technology. The study of the structure and physical…

Q: am confused about the solutions

A: Express answers in parts (a), (b), and (c) in terms of m, L, v, and physical constants as…

Q: When a hypothetical diatomic molecule having atoms 0.8860 nm apart undergoes a rotational transition…

A: Given, r=0.8860 nm l=2

Q: (d) Number (e) Number Mo i Units Units

A:

Q: A hypothetical NH molecule makes a rotational-level transition from I= 3 to l = 1 and gives off a…

A:

Q: Determine the magnitude of the towing force F if the resultant force has a magnitude Fr=13 kN and is…

A: We will first resolve the given forces into components along x and y axis. Then we will use given…

Q: What is a base unit

A: The quantities can be classified into two groups i.e. base units and derived units. Base unit is one…

Q: Convert to full form f) 2.37 x 10-2 g) 3.22 x 106 h) 5.49 x 103

A:

Q: The solar power per unit area at the Earth's distance from the sun--called the "solar constant"--is…

A:

Q: 1. For the graph shown, the dependent variable is and independent variable is 120 100 80 60 40 20 8.…

A: 1. Dependent variable = extension     Independent variable = mass 2. The scale chosen for Y axis is…

Q: resolve correctly

A: Given: Current in the 4 ohm resistor is I = 0.2 A. Required: Potential drop across the 4 ohm…

Q: cs Find the forces on the wall and on the floor. L Ladder = 12m Weight Ladder = 98 N 75 kg Mass of…

A:

Q: https://www.compadre.org/PQP/applications/section14_3.cfm

A: The electric field at a point inside a spherical shell is zero. This applies to the region between…

Q: In the figure, block 1 has mass m₁ = 450 g, block 2 has mass m₂ = 510 g, and the pulley is on a…

A:

Q: What is financial repression and why does it exist?

A:

Q: Using the letters, match each prefix with the multiplier it represents. V V V V x 10-6 x 106 x 10-3…

A: The given prefix are associated with multiplier as per their definition.

Q: How many kw-hr of energy does a 40 Watt light bulb use in one hour?   B) FPL charges 10.8 cents…

A:

Q: ) if A = = 3i+4j +2K and B= -2i +6j +5k find A. В. (A.B änjö a)

A: Option b

Q: A rod has length 2 meters. At a distance x meters from its left end, the density of the rod is given…

A: Given Density of rod δ(x)=2+6x And length of the rod is 2m. Let's take a small element of length dx…

Q: In the figure, block 1 has mass m₁ = 480 g, block 2 has mass m2 = 560 g, and the pulley is on a…

A:

Q: incorrect can you re try

A:

Q: (B) What happens to the velocity of a body as it moves away from the sun? Kepler's First Law Write…

A: Hi, as per guidelines for multiple questions, the first two questions have been answered. When a…

Q: A signed value is one that can be positive, negative, or zero.   True   False

A: Signed value is 32 bit datum that encodes an integer which may be positive, negative or zero.

Q: The diagram represents a standing wave on a string. Which harmonic is this?

A: Given data: The figure of a standing wave is given.