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A boy is riding a bicycle which has tires with a diameter of 62cm.If he travels a distance of 0.32km in a time of 1 minute, what is the angular velocity of the tire?
If the boy is able to accelerate his bicycle from rest to16km/hr in a time of 5 seconds, what would be the angularacceleration of the tire?
A dentist uses a small mirror of radius 55 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 20 mm from the tooth, what is the magnification of image.
the plates of a parallel-plate capacitor are 3.28mm apart and each has an area of 12.2 cm2. each plate carries a charge
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be? Radius=0.47 x 10^-9.
An electron starts from rest 32.5 cm from a fixed point charge with Q=-0.125 µC. How fast will the electron be moving when it is very far away
Early in the morning, when the temperature is 5.0?C, gasoline is pumped into a car's 51-Lsteel gas tank until it is filled to the top. How much gasoline spills out in this case
What is the wavelength of the waves emitted by source? What is the difference in frequency between the directly radiated waves and the waves reflected from a whale traveling straight toward the ship at 4.95 ? Assume that the ship is at rest in the..
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
a surface is so constructed that at all points on the surface the vector points outward. therefore it can be said
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
Calculate the commutation relation for the inner product of position and momentum and angular momentum. In other words, what is: [p\cdotr, L] (vector p dotted with vector r, vector L)
A 2000-kg car travelling at an initial speed of 50 km/h skids to a stop with a constant acceleration. Determine the length of the skid marks
The speed of a bullet as it travels down the barrel of a gunis given by v=-50000t2-300t where v is in km/s and t inseconds The acceleration of the bullet as it leaves the gun is zero.
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