2. You place a C film with an unknown thickness in between an Am-241 source and a detector. After one minute has passed, the detector has registered 10275 counts. You then remove the film, and the detector registers 11000 counts during a one minute interval. How thick is the C target? Provide an answer in units of ug/cm2.
Q: Which of the following cannot be called energy? a) Momentum b) Stress energy c) Chemical potential d...
A: Given, Some physical quantities which may be energy or not
Q: The rate of change of angular speed is constant. What will be the expression for change in angular s...
A: a
Q: Kepler’s laws of planetary motion replaced circular orbits with _____ a) elliptical orbits b) parabo...
A: A
Q: The forces responsible for a body regaining its shape after removal of deforming forces are ________...
A: B
Q: completely elastic solid body partially regains its shape after removal of external force. True or F...
A: B
Q: Explain why you believe each set of vectors is or is not a subspace of 4-space.
A: Given:- A non subset U of an vector space is a subspace for all x,y in U and scalar in α...
Q: The energy possessed by an object because of its motion is termed _____ a) potential energy b) kinet...
A: B
Q: What is the relationship between height “h” above the earth’s surface and a depth “d” below the eart...
A: D
Q: wp2-
A: Let Ls be the rate at which sun radiates energy. Let r be the radius of the earth’s orbit. Let S be...
Q: The centre of mass for an object always lies inside the object. a) True b) False
A: B
Q: The angular speed of a body is 2rpm. What should be the angular acceleration for the angular speed t...
A: This is a problem based on circular motion. To solve this problem, we will use the modified kinemati...
Q: object is thrown from the ground with a velocity of 5 m/s. If the object has a mass of 2kg, what wil...
A: C
Q: Stress in a solid body is defined as ___________ per unit area. a) external force applied b) strain ...
A: D
Q: ball of mass 2kg is moving with a speed of 10m/s along a flat surface. It collides with another ball...
A: A
Q: body of mass 40 Kg covers a distance of 50 m in 5s starting from rest under the influence of a force...
A: A
Q: collision of two balls linear momentum is conserved, it implies that even kinetic energy will remain...
A: It is False, If the linear momentum is conserved, its not necessary that the kinetic energy will al...
Q: For which of the following does the centre of mass lie outside the body? a) Pen b) Dice c) Rectangul...
A: D
Q: a point moving in space has an acceleration of 3sin(t)i+3cos(t)j+6k has a velocity of i+3j+6(pi)k at...
A: Given: The equation for the acceleration a = 3sint(i)+3cost(j)+6(k). The velocity at π s v = i+3j+6...
Q: Q2) Use Gauss's law to find the electric flux density everywhere in space if the volume charge densi...
A: Given : ρv = 4 cos1000πρ nC/m31.25 mm < r < 1.75 mm
Q: A car of mass 1ton is moving with a velocity of 25 m/s towards left. A truck of mass 5 ton is moving...
A: A
Q: For what value of e is a collision perfectly inelastic? a) 1 b) 2 c) 0.5 d) 0
A: D
Q: What is the magnitude of the ratio of KE and PE of a satellite revolving around a planet in a circul...
A: Given information: A satellite is revolving around a planet in a circular orbit having a radius, R
Q: A geosynchronous satellite always appears fixed in the sky. a) True b) False
A: B
Q: Which of the following is true? a) Potential energy decreases as altitude increases b) Potential ene...
A: Introduction: Gravitational potential energy is the energy stored in an object as the result of its ...
Q: 5.Particles of masses 1 kg and 3 kg are at (2i+5j+13k) m and (-6i+4j-2k) m. What is the position of ...
A: Given, Mass,m1=1kg,Mass,m2=3kg,x→1=2i^+5j^+13k,^x→2=-6i^+4j^-2k^,Expression be used,Centre of Mass=m...
Q: A rocket is shot straight up in the air from the ground at a rate of 46 feet per second. The rocket ...
A: Given information: The velocity of the rocket, v=46 ft/s=14.02 m/s The distance of the rangefinder f...
Q: Two bodies collide perfectly inelastically, they will ______ a) Move together b) Move in opposite di...
A: A
Q: What is the minimum velocity required for an object of mass “m” to escape the gravitational pull of ...
A: D
Q: work done on a body of mass 5 Kg is 70 J. What is the magnitude of the force applied if the total di...
A: A
Q: Two vertically hanging wires have a fixed horizontal sep 85 cm, and they carry upward c rents of i1 ...
A: Given: The distance between the two wires is 85 cm. The current in wire 1 is 3.5 A. The distance whe...
Q: The change in the total energy of a body moving because of work being done on it is attributed by th...
A: C
Q: There are two external forces acting on a system of particles. Select the correct statement. a) Line...
A: B
Q: Problem 2.7 Suppose the position of a particle as a function of time is given by r = 1+ sin t and 0 ...
A:
Q: A body of mass 3 kg starts from rest with a uniform acceleration of unknown magnitude. If the body h...
A: B
Q: How many penguins with a mass of 30 kg can a disc-shaped ice float with dimensions of (d = 15 m, h =...
A: Given: The mass of one penguin is m=30 kg. The diameter of disc is d=15 m. The height of disc is h=...
Q: What does Kepler’s law of period relate? a) Time period and semi-minor axis b) Time period and eccen...
A: C
Q: Consider a system on which there are external forces acting. If the vector sum of all these external...
A: B
Q: Pls help on all
A: Given: The half-life of the plutonium-239 is 24000 yrs. The time given is 1000 yrs.
Q: What is the value of universal gravitational constant? a) 6.022 x 1023 b) 6.67 x 10-11 N m2/kg2 c) 1...
A: B
Q: wp1-
A:
Q: Bicyclists often carry along a water bottle on hot days. When the bottle is wrapped in a wet sock, t...
A: Bicyclists often carry along a water bottle on hot days. In summer the temperature of the environm...
Q: A solid disc has a mass of 10kg and radius 1m. Find its radius of gyration. a) 1.414m b) 0.707m c) 1...
A: B
Q: Which scientist introduced the universal law of gravitation? a) Albert Einstein b) Isaac Newton c) S...
A: B
Q: Using the Bohr model: Calculate the wavelength of the first spectral lines from the Lyman, Palmer an...
A: According to Bohr model, the wavelength of transition from state ni to nf is given by as following :...
Q: Most waves used for communication purposes rely on geostationary satellites because _____ a) they ca...
A: A
Q: Which of the following is the mathematical representation of law of conservation of total linear mom...
A: A
Q: The radius of Jupiter is approximately 11 times larger than the earth. Jupiter has a mass 316 times ...
A: D
Q: Assume a spring extend by “d” due to some load. Let “F” be the spring force and “k’ the spring const...
A: B
Q: Centre of mass can vary upon the application of internal force. a) True b) False
A: B
Q: H.W. Or find the center of mass and inertia of a thin, -shaped (u), three-sided bent wire, all piece...
A: Let b denotes the length of each side, m denotes the mass of each side, x denotes the x-coordinate o...
Trending now
This is a popular solution!
Step by step
Solved in 2 steps