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One block is placed on a smooth horizontal surface, and the other block hangs over the side, the string passing over a frictionless pulley. Describe the motion of the system when the mass of the str
Are the bell and siren simultaneous events for a bicyclist waiting to cross the tracks? If not, which which occurs first and by how much time?
How are the weights of the beam distributed on the pillars. calculate the weight distribution.
A circular radar operates at a frequency of 8 GHz and has a Diameter of 0.8 m.What is the angle at the half-power bandwidth?
A circular polarized electromagnetic wave in vacuum with E= x(hat)Acos(wt-Bz)+y(hat)Dsin(wt-Bz) hits under brewsterangle a plane to a dielectricum with epsilon=4epsilon0, my=my0, sigma=0. Calculate
A loudspeaker at a concert generates 2.00x10^-2 W/m^2 at a distance of 25.0m and all the acoustic energy is radiated uniformly into a forward facing hemispherical surface. The frequency is 1.00 kHz.
A monatomic ideal gas, initially at 300K undergoes an isobaric expansion at 2.50kPa. If the volume increases from 1.00m^3 and 12.5kJ of the thermal energy is transferred to the gas,
Find the moment of inertia of solid cylinder of radius a, height h and mass M about the axis of the cylinder. Hint: This will require an integration.
Calculate microscopic cross section of the photoelectric reaction each given energy of the photons? Is photo electric effect is possible in all cases?
The warming process contains two steps: the first at constant pressure and the second at constant volume. Determine the amount of energy transferred to the gas by heat. Please show work and step-by-
Calculate the kinetic energy generated when a white dwarf star in a binary system accretes enough material to increase its mass beyond the Chandrasekhar limit (1.4 solar masses) and collapse to the
A system is acted on by its surroundings in a way that it receives 50 J of heat while simultaneously doing 20 J of work. What is its net change in internal energy? Show Work!
Kathy places one end of a copper rod in heat reservoir and the other end in a heat sink. By what factor is the rate of heat flow changed when the temperature difference between the reservoir and sin
A 10 g piece of aluminum (which has a specific heat of 0.215 cal/gm-C0) is warmed so that its temperature increases by 5C0. How much heat was transferred into it? Show Work!
Which best describes the relationship between two systems in thermal equilibrium?
A conducting sheet carries a surface current density of K (Amperes/meter). There are no other currents in the vicinity. a-) Find magnitude of B close to the sheet
A billiard ball collides in an elastic head-on collision with a second identical ball. What is the kinetic energy of the system after the collision compared to that before collision?
Write the Maxwell's equations in full form (with time varying fields) assuming magnetic monopoles do exist in the universe. And comment on subsequent changes of each equation.
A 75 kg swimmer dives horizontally off a 500 kg raft. If the diver's speed immediately after leaving the raft is 4 m/s, what is the corresponding raft speed? Show Work!
A 2500-kg truck moving at 10 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 7 m/s. What was the mass of the truck car? Show Work!
A ball is thrown upwards with an initial velocity of 10 m/s. Find the time for its maximum height and also find its maximum height.
A curling stone, with a mass of 20.0 kg, slides across the ice at 1.50 m/s. It collides head on with a stationary 0.160-kg hockey puck. After the collision, the puck's speed is 2.50 m/s. What is th
Macie pulls a 40 kg rolling trunk by a strap angled at 30° from the horizontal. She pulls with a force of 40 N, and there is a 30 N rolling friction force acting on trunk. What is the trunk's ac
A 40-car train travels along a straight track at 40 mph. A skier speeds up as she skis downhill. On which is the net force greater?
An object, when pushed with a net force F, has an acceleration of 2 m/s2. Now twice the force is applied to an object that has four times the mass. Its acceleration will be. Show work please