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The acceleration of a particle as it moves along a straight line is given by a = (2t-1)m/s^2, where t is in seconds. If s = 1m and v = 2m/s when t = 0s, determine the particle's velocity (v) and pos
Gold foil is 0.08 mm thick and 670mm^2 in area. (a) it is cubic with a=0.4076nm. How many unit cells are there in the foil? (b) what is the mass of each unit cell if the density is 19.32 Mg/m^3?
A rigid tank contains air at 600 kP a absolute pressure and 18? C . What is the change in pressure if the temperature is increased to 40? C ?
A bicyclist starts from rest after traveling along a straight ath a distance of 20m reaches a speed of 30km/h. Find his acceleration if it is constant. Also, how long does it take to reach the spee
A gas may be considered rare?ed, that is, it can not be studied with theories based on the continuum assumption, if it contains less than 1012 molecules per cubic millimeter.
A well-insulated rigid vessel contains 3 kg of saturated liquid water at 40 degrees Celsius. The vessel also contains an electrical resistor that draws 10 amperes when 50 Volts are applied.
There are three phases in a reservoir: oil, gas, and water. Assuming that all pores are occupied by fluids and the volume for each phase is as follows What are the saturations for oil, gas, and wate
A uniform rod has the length L=200m. The lateral surface area of the rod is perfectly insulated. Intially the rod has the temperature of 0ºC. One end of the rod(x=0) is perfectly insulated whil
How the unknown constants in the original equation relate to the slope and intercept that would appear on the plot (calculated from the "transformed" variables).
One kilogram of carbon dioxide is compressed from 1 MPa and 200 degrees Celsius to 3 MPa in a piston cylinder devise arranged to execute to polytropic process PV^1.5=constant.
Consider a light, single-engine airplane such as the Piper Super Cub. If the maximum gross weight of the airplane is 7780 N, the wing area is 16.6 , and the maximum lift coefficient is 2.1 with fla
Consider a finite wing with an aspect ratio of 7; the airfoil section of the wing is a symmetric airfoil with an infinite wing lift slope of 0.11 per degree. The lift-to-drag ratio for this wing is
A single-stage, passive, low-pass (RC) filter is designed to have acut-off frequenccy, f_c, of 100 Hz. Its resistance equals 100 ohms.
Outside temperature is 5 degrees C, a house requires a Heat Transfer rate of 12 kW to maintain an inside temperature of 20 degrees C. A vapor-compression heat pump with Refrigerant 22 as the working
It is proposed to heat a home using a heat pump. The rate of heat transfer from the house to the environment is 15 kW. The home is to be maintained at 20 C. The outside air is at -20 C.
For the water and the brick together as the system, find the final equilibrium temperture. The specific heat of gold is 129 J/kg*K.
The maximum allowable temperature of a working fluid is usually determined by metallurgical considerations. In a certain power plant this temperature is 700 C. A nearby river has a water temperature
Consider fully developed laminar flow with constant properties in a circular tube. Let the surface be insulated, but let there be heat generation within the fluid at a rate S, W/m3, that is everywhe
Consider fully developed constant-property laminar flow between parallel planes with constant heat rate per unit of length and a fully developed temperature profile. Suppose heat is transferred to t
The specific heat of the gas follows the relationship given as: Cp = 1 + 0.01 T, where Cp is in kJ/kg-K and T is in K. Calculate change in enthalpy (kJ/kg) of the gas.
Consider a spark ignition combustion engine with two possible configurartion for turbocharging. Configuration A is conventional turbocharging. Configuration B is a new propsed configuration using a
A water kettle has 1 kg of saturated liquid water at P0 . It is on an electric stove that heats it from a hot surface at 500K. Water vapor excapes form the kettle, and when the last liquid drop disa
An ideal gas at 20 bar and 400 Celcius is being fed into an adiabatic turbine to generate electricity at a rate of 278 kmol/hr. The ideal gas will exit the turbine at 2 bar.
A heat pump is used to maintain a house at a constant temperature of 23°C. The house is losing heat to the outside air through the walls and the windows at a rate of 60,000 kJ/h while the energy
Steam at 140 lbf/in2, 1000°F enters an insulated turbine operating at steady state with a mass flow rate of 3.24 lb/s and exits at 2 lbf/in2. KE and PE effects are negligible.