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1. Express the following angles in radians :
(a) 45.0deg
(b) 60.0deg
(c) 90.0deg
(d) 360.0deg
(e) 445deg.
Give as numerical values and as fractions of pi.
2. A bicycle with tires 68cm in diameter travels 9.2km. How many revolutions do the wheels make?
3. A rotating merry-go-round makes one complete revolution in 4.0s. (a) What is the linear speed of a child seated 1.2m from the center? (b) What is her acceleration(give components)?
4. An automobile engine slows down from 3,500rpm to 1,200rpm in 2.5s. Calculate (a) its angular acceleration. assumed constant, and (b) the total number of revolutions the engine makes in this time.
5. A cooling fan is turned off when it is running at 850rev/min. It turns 1,250revolutions before it comes to a stop. (a) What was the fan's angular acceleration, assumed constant? (b) How long did it take the fan to come to a complete stop?
A horizontal wire of 0.52 m carrying a current of 8.2 A is placed in a uniform external magnetic field. Determine the magnitude of the external magnetic field
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the car's centripetal acceleration? What is the centripetal force that acts on the car?
If you are on a two-lane highway, how far away from you must an approaching car be in order for you to safely pass the truck without colliding with the oncoming traffic? Assume the speed of an approaching car is also 25 m/s.
in an alcohol-in-glass thermometer the alcohol column has length 11.84 cm at 0.0 degrees c and length 22.87cm at 100.0
A heat engine does 264.08 J of work per cycle while exhausting 676.45 J of heat to the cold reservoir. What is the cold reservoir temperature in degrees Celsius
A high speed test track for cars has a curved section an arc of a circle of radius r= 752 meter. Find the normal force from the road on the car in this situation
When a Newton's ring apparatus is immersed in a liquid, thediameter of the eighth dark ring decreases from 2.92 cm to2.48cm. What is the refractive index of the liquid
Find the change in the force of gravity between two planets when the distance between them is decreased by eight
Resistors of 5, 10, 20 ohms are connected in series to a 10 Volt battery. Evaluate what the current through the 20 ohm resistor
location a is 2.50 m to the right of a point charge q. location b lies on the same line and is 4.80 m to the right of
Two particles each weigh 1.04 N. Find the magnitude of their mutual gravitational force when they are separated by a distance of 20.3 cm
A 15 cm focal length converging lens is used to magnify small newspaper print 2 mm high. Compute the height of the image for the maximum angular magnification for a normal eye. Suppose the eye focuses at the near point of 25 cm.
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