Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
It is well known that wind makes the cold air feel much colder as a result of the wind chill effect that is due to the increase in the convection heat transfer coefficient with increasing air velocity. The wind chill effect is usually expressed in terms of the wind chill factor, which is the difference between the actual air temperature and the equivalent calm-air temperature. For example, a wind chill factor of 20°C for an actual air temperature of 5°C means that the windy air at 5°C feels as cold as the still air at 15°C. In other words, a person will lose as much heat to air at 5°C with a wind chill factor of 20°C as he or she would in calm air at 15°C. For heat transfer purposes, a standing man can be modeled as a 30-cm-diameter, 170-cm-long vertical cylinder with both the top and bottom surfaces insulated and with the side surface at an average temperature of 34°C. For a convection heat transfer coefficient of 15 W/m2 · °C, determine the rate of heat loss from this man by convection in still air at 20°C. What would your answer be if the convection heat transfer coefficient is increased to 50 W/m2· °C as a result of winds? What is the wind chill factor in this case?
Jeffrey is driving his Toyota Prius the freeway and reaches his exit. The exit has a radius of curvature of 25m and is banked 38°. How fast can Jeffrey travel around the curve on a dry day
the separation distance between two 1.0 kg masses is change. how is the mutal gravitational force affected in each case
In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 8.00 cos 3t + ? 4 where x is in centimeters and t is in seconds. (a) At t = 0, find the position of the piston.
One mole of an ideal gas is heated so that T = AP2, where A is a constant and P is the pressure. The temperature changes from T0 to 4T0. Find out the work completed by the gas. (Use the following as necessary: T0, P0, and V0.)
An airplane, diving at an angle of 48º with the vertical, release a projective at an altitude of 830m. What was the vertical component of its velocity
The bowling ball has a diameter of 20.6 {rm cm}, and the angle the stick makes with the horizontal is 30.0 {rm ^circ}. You may suppose there is no friction between the stick and the bowling ball, though friction with the floor must be taken into acco..
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
A particle moves along the path y= -0.500x^2 (meters) with a constant speed of 5 m/s. Assume dx/dt >= 0. Determine the Cartesian components of velocity
A woman on a bridge 88.9 m high sees a raft floating at a constant speed on the river below, Find the speed of the raft
on a frictionless horizontal surface a 1.50 kg mass traveling at 3.50 m/s collides with and sticks to a 3.00 kg mass that is intially at rest. What will be the maximum compression of the spring
what would the range of the baseball
A thin uniform rod (length 1.2 meter, mass = 2.0 kg) is pivoted regarding a horizontal, frictionless pin through one end of the rod. (The moment of inertia of the rod about this axis is ML 2/3.) The rod is released when it makes an angle of 37 degree..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd