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A ceiling fan turns at a rate of 20 rpm. A 1 gram bug hangs on to the end of a 50 cm fan blade what is the magnitude of the frictional force between the bugs feet and the blade
A resistor of unknown resistance and a 48.0-? resistor are connected across a 128.0-V emf device in such a way that an 10.0-A current flows
Alkaid and Merak are 25.6 ? apart in the earth's sky. Find the distance in light years from Alkaid to Merak
Supersonic airflow enters an adiabatic, constant area pipe (inside diameter = 0.1 m) with Ma1 = 2.0. The pipe friction factor is 0.02. If a standing normal shock is located right at the pipe exit, and the Mach number just upstream of the shock is 1..
Why does a hot air balloon float even though it is so heavy - What makes balloons float when they are full of air but not float when they are deflated?
A spherical mirror is to be used to form an image, four times as tall as an object, on a screen positioned 4.6 m from the mirror. Describe the type of mirror required
The flying height for a vertical photograph above the downtown area of a city is 1980 meters. The focal length of the camera lens is 209.55 mm. Compute the tower height
An inductor is connected to a 15kHz oscillator that produces an rms voltage of 7.0V. What is the value of the inductance L
When four people with a combined mass of 319 kg sit down in acar, they find that the car drops 2.5 cm lower on its springs. What is the frequency of the car's vibration
Please show all steps. A person wearing eyeglasses enters a room maintained at 25?C, after walking home in the cold (the glasses are at 2?C). The glasses start to fog. Question: Find the minimum relative humidity in the room.
A body weighing 157 Newton is pulled over a horizontal surface with constant velocity by a constant force of magnitude 55 Newton directed 15 degree above the horizontal. Find the work done by the applied force
The half-life for the α decay of uranium is 4.47 × 109 yr. Determine the age (in years) of a rock specimen that contains 61.2% of its original number of atoms.
A train engine weighs 5 times as much as aflatbed car. If the engine coasts at 3 km/hr into the boxcarthat is initially at rest and becomes coupled to the boxcar, how fast do the two move after the inelastic collision?
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