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An open boxcar rolls at a constant speed of 6 ft/sec down a 1.5% slope. Then grain is poured in vertically downward at a rate of 500 pounds per second and at a vertical speed of 30 ft/sec when it impa
At t = 0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by ?(t) = (260 rad/s)t ? (18.0 rad/s2)t2 ? (1.
Expalin why ionic compound are formed when a metal from the left side of the periodic table reacts with a nonmetal from the right side. Give two examples of such compound.
Equal moles of helium and nitrogen were used to fill a 2.6 liter latex balloon (porous membrane). It was determined that the helium escaped from the balloon at 2.75 ml/min.
The bent rod is supported at A, B and C by smooth journal bearings. Determine the magnitude of F2 which will cause the reaction Cy at the bearing C to be equal to Zero. The bearings are in proper a
A point charge Q is located a distance r>R from the center of a nongrounded conducting spherical shell with radius R and net charge that is also.If the point charge is very far from the shell, then
Two capacitors of capacitance 3C and 5C (where C = 0.06 F) are connected in series with a resistor of resistance R = 6.5.How long will it take the amount of charge in the circuit to drop by 75% in sec
A string is wrapped many times around a pulley and is connected to a block with mb = 4.601 kg that is hanging vertically. The pulley consists of a wheel of radius 43.29 cm constructed with spokes
The propeller of a light plane has a length of 1.752 m and a mass of 19.96 kg. The rotational energy of the propeller is 158.6 kJ.What is the frequency of the propeller in rpm? You can treat the prope
A golf ball with mass 45.90 g and diameter 42.60 mm is struck such that it moves and rotates with a frequency of 3081 rpm and has a kinetic energy of 69.58 J.What is the linear speed of the golf ball
In a silicon junction diode, the region of the planar junction between n-type and p-type semiconductors can be approximately represented as two adjoining slabs of charge, one negative and on
The aorta is the main artery from the heart. A typical aorta has an inside diameter of 1.7cm and carries blood at speeds of up to 35 cm/s.What is the speed of the blood if plaque on the artery's walls
The primary objective is to apply the modeling, analysis, and design principles for a permanent magnet (PM) based system for harvesting wave power for a specific communications application
Four identical springs support equally the weight of a 1230kg car. If a 93kg driver gets in, the car drops 6.5 mm.mm.What damping parameter b is needed for the car if the shock absorbers are to provid
Steam enters a turbine operaing at steady state at 700oF and 450 psi, and leaves as a saturated vapor at 1.2 psi. The turbine develops 12,000 hp, and heat transfer from the turbine to the surrounding
Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80oF with a velocity of 1453.4 ft/s.At the exit, the temperature is 280oF. The diffuser operates at steady state. Determine the ex
Two fire alarms are placed in a building, one 3.1 m north of the other. A person sitting at a desk which is 51.2 m east and 9.9 m north of the point mid-way between the alarms does not hear them when
An earthquake produces two basic types of waves: surface waves and bulk waves. The former move along the surface of the earth much like the ripples in the surface of a pond, while the other type propa
1. A capacitor in an RC circuit is charging. Which one of the following statements is correct?2. Q. Faraday's Law for Voltage Induction due to a conducting loop in a magnetic field:\(undefined\)
The top portion of the tank is used for stock drinking water. If the tank is holding 30,000 litres of water what is the ratio of the water velocity coming out of the bottom tap compared to the veloc
Underwater remotely operated vehicles are used to check underwater pipelines and structures such as gas platforms. They have operating depths from 150 to 300m. Calculate the pressure these vehicles
Calculate the acceleration due to gravity, your weight and your escape velocity for each planet in the solar system and Earth's moon. (Hint: use a spread sheet).
A group of atoms is confined to a very small (point-like) volume in a laser-based atom trap. The incident laser light causes each atom to emit 1.0 x 106 photons of wavelength 780 nm every second.
The crate shown is held against wedge B by a spring. The spring is 96.0% of its original uncompressed length l=2.75m, and the spring constant is given as k=1450N/m. The coefficient of static friction
Faraday's Law for Voltage Induction due to a conducting loop in a magnetic field:\(\DeltaV_{ind}=-d\Phi_{B}/dt = -d(BAcos\theta)/dt\), We can induce a voltage 3 ways. One way is to change the magnetic