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A wheel rotating about a fixed axis with a constant angular acceleration of 1.0rad/s2 turns through 1.5 revolutions during a 5.0s time interval. Calculate the angular velocity at the end of this time interval.
(a) For an amorphous solid, the essential aspect with which its structure differs with respect to that of crystalline solid is the absence of long-range order and translational periodicity. Elaborate on this statement by explaining with the aid of a diagram the situation prevailing in the gaseous –state of a given material. (5marks)
Evaluate the Reynold’s number at terminal velocity in air at 20oC, of a spherical dust particle of radius 1.0 X 10-5m and density 2.0 X 10-3Kgm-3.
In the figure shown below two new cast iron pipes in series, D1 =0.8m, D2 =0.6m the first pipe of length of L1=400m, while the second of length of L2=350m, level at A =120m, Q = 0.1.5m3/s (T=25oC).there are a sudden contraction between Pipe 1 and 2, and Sharp entrance at pipe 1. Fine the total head of energy losses
The aerodynamic drag of a new sports truck is to be predicted at a speed of 50.0 km/h at an air temperature of 25°C. Automotive engineers build a one-sixth scale model of the car to test in a wind tunnel. It is winter and the wind tunnel is located in an unheated building; the temperature of the wind tunnel air is only about 10°C. Determine how fast the engineers should run the wind tunnel in order to achieve similarity between the model and the prototype, if the drag sensor read 80 N fine the drag force exerted on prototype. Properties for air at atmospheric pressure and T= 25 ºC, ρ=1.184kg/cm3 and μ=1.849*10^-5kg/m.s, similarity at T=10 ºC, ρ=1.22 kg/cm3 and μ=1.792*10^-5kg/m.s.
To generate tension in a muscle, a myosin molecule pulls on an actin filament with a force of 1.50 µN. if the actin filament moves at 3.56 nm/s, what is the power output P of this molecular motor? Use prefixes to express your answer
To generate tension in a muscle, a myosin molecule pulls on an actin filament with a force of 1.50 µN. if the actin filament moves at 3.56 nm/s, what is the power output P of this molecular motor? Use prefixes to express your answer.
Lay a long "L" bow of uniform cross-section on a smooth horizontal plane and find its tension at a distance of "l" from one end when one end of it is drawn with force "F".A car starts from stoplight and is traveling with a velocity of 10m/second east in 20 seconds. What is the acceleration of the car?
an object is placed 5 feet from the center of a horizontally rotating platform. the coefficient of friction is 0.2. the object will begin to slide off when platform speed is nearest to
