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A ceiling fan is turned on and reaches an angular speed of 120 rev/ min in 20s. It is then turned off and coasts to a stop in 40s. In the one minute of rotation, through how many revolutions did the fan turn?
A 60.0-kg runner expends 360 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
If N= 200, r = 5 cm, I = 2.5 A, B = 0.25 T Plane of coil makes an angle of 60 degree, with field line. Calculate torque that must be applied to prevent
A 100 Ohm resistor dissipates heat to its surroundings, isothermally. The resistor maintains a constant temperature of 300 K. What is the change in entropy of the resistor
A circular coil of wire with 10 turns and a 4.0 cm radius is located between the poles of a large electromagnet that produces a uniform magnetic field of 0.5T. Calculate the average induced emg across the ends of the loop
A 3.7-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,062oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC. what is the final temperature of the iron block
An auto race takes place on a circular track. A car completes one lap in a time of 19.5 s, Find the average angular speed and the radius of the track
You are asked to design a cylindrical steel rod 55.0 long, with a circular cross section, What must the rods diameter be
A diverging lens with a focal length of -48.0cm forms a virtual image 8.50mm tall, 16.5cm to the right of the lens. Determine the position of the object
A 5kg sphere moves at 20m/s makes a perfectly inelastic collision with a second sphere that is at rest. What is the mass of the second sphere
A 755-loop square armature coil with a side of 8.5 cm rotates at 65.0 rev/s in a uniform magnetic field of strength 0.75 T. What is the rms voltage output of the generator
question1assume a 67-kg boy and a 44-kg girl use a massless rope in a tug-of-war on an icy resistance-free surface. if
A 41.0 mA current is carried by a uniformly wound air-core solenoid with 455 turns, a 10.0 mm diameter, and 13.0 cm length. Compute the magnetic field inside the solenoid
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