Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
To a closed system we add 28 kJ of heat while its internal energy decreases by 24 kJ. How much work do we gain or perform? (Everything reversible)
Find the horizontal component of the average force on the ball. Take the x-direction to be positive to the right Express your answer using two significant figures.
The length of the road up the hill is 263 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 172 kJ?
A 71.4 skier starts from rest and slides down a 33.0 -m frictionless slope that is inclined at an angle of 18 degrees with the horizontal. Ignore air resistance. a.) Calculate the work done by gravi
A 1.6 kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall. The initial height of the block is 0.56 m ab
Josie and Charlotte push a 12 kg bag of playground sand for a sandbox on a frictionless, horizontal, wet polyvinyl surface with a constant, horizontal force for a distance of 6.00 m, starting from r
Juana slides a crate along the floor of the moving van. The coefficient of kinetic friction between the crate and the van floor uis 0.112.
Neutrons of 1.5 MeV energy are introduced at the rate of 2x10^15 neutrons/cm^3/sec into an infinite slab of graphite. Calculate the number of elastic scattering collisions occurring per second per c
Consider a 10 g sample of enriched uranium (containing initially 15 w/o in U235 and the rest is U238) that is exposed in a thermal reactor to a flux of 10^12 neutrons/cm^2/sec for 1 week and then re
Determine the maximum activity of the cobalt-60 under the given conditions. The thermal-neutron absorption cross-section of cobalt-60 may be taken to be 6 barns.
Radium (Ra) decays to radon (Rn) which decays to polonium. If at t = 0, a sample is pure radium, how much polonium does it contain at time t? Suppose No is the number of radium atoms at t = 0, and L
A 5.00 m length of 1.8 mm diameter wire carries a 700 mA current when 18.0 mV is applied to its ends. Assume the drift velocity is 1.7 × 10-5 m/s. Determine the magnitude of the current density
A 10.0 m length of wire consists of 5.1 m of copper followed by 4.9 m of aluminum, both of diameter 1.0 mm. A voltage difference of 24 mV is placed across the composite wire. (a) What is the total r
How would I determine an expression for the interaction energy between the spheres? Would I use the above equation and use rho from sphere 2 and phi from sphere 1, evaluated at 2?
Two particles A and B strike each other as shown. mA = 2.9 kg and mB = 1.3 kg. Just before the collision vA = (2i + 8j) m/s and vB = 0 m/s.e = 1.0. What are their speeds ((a) particle A and (b) part
A particle in the xy plane is attracted to the origin by a force F = -k/yr Calculate the work done by the force as the particle moves from the point x=0 y=b to the point x=2b y=0 along the path.
A spherical capacitor is comprised of a solid inner conduction sphere of radius a with positive charge Q and an isolated, concentric, thin outer conduction shell of radius b and charge -Q. Derive th
You are given a non-conduction equilateral prism (4 faces, all with equilateral triangles). A charge of 65 pico-coulombs is placed at the apex of the prism. Find the electric flux through the equila
A solenoid 0.03m long consists of 8942 loops of wire. If the magnetic field inside the solenoid is 1.0 T, what is the magnitude of the current that flows through it?
Two equally charged spheres of mass 0.001Kg are placed 0.02m apart. What is the eletrictric repulsive force that they exert on each other? (The value of k is 9.0*10^9 N.m^2/C^2.)
A convergent lens has a focal length of 7cm. A 2cm tall image forms 30cm from the lens. (a) How far is the magnification?
The speed of light in a material is 0.50 c. What is the critical angle of a light ray at the interface between the material and a vacuum?
A Ball of mass 4kg starting from rest rolls down from a height of 5m to the ground level. HInt: PE = mgh, KE = 1/2 mv^2 Use the law of conservation. Please show the work. a. What is the speed of
The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 62.0° with respect to the vertical as sh
Solenoids are used to generate uniform magnetic fields. There is a relation B=m0nI. Explain why the magnetic field B inside the solenoid is proportional to n?