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A 15 kg disk of radius 1 m is spinning at a rate of 4 rotations per second.
1. What is its moment of rotational inertia?
2. What is its angular momentum?
3. What is its speed in radians per second?
4. What is its speed in rotations per minute?
A 0.1kg ball is attached to a string and whirled around in a circle overhead, What is the maximum speed the ball can have when the radius of corcle is 1m
When two identical ions are separated by a distance of 8.3×10?10m , the electrostatic force each exerts on the other is 5.4×10?9N How many electrons are missing from each ion
A pipe with a diameter of 2.88 cm is carrying 134 liters/minute of water with an overpressure (gauge pressure) of 3.65 atmospheres. Find the overpressure of the water in the pipe at the top of the building
Water is lifted out of a well 22.0m deep by a motor rated at 1.40hp .Assuming efficiency 90% , how many kilograms of water can be lifted in 1 min
John and David are carrying Bob on a uniform horizontal board 8.9 m long which weighs 211 N. find the upward force exerted by both John and David
A light wave travels from point A to point B in vacuum. hat is the difference between the number of waves between A and B with and without the glass plate in place
Find the forces that act on each of the three charges. a) q = -1.0 µC in vector form b) q= 3 µC in vector form b) q =5 µC in vector.
Consider a grounded conducting sphere of radius "a" in the presence of a point charge "Q" a distance "D" away from the center of the sphere. How do you show the electric field E is everywhere normal of the sphere, and how do you find the induced char..
A 60 kg man is ice skating due north with a velocity of 6.0 m/s when he collides with a 38 kg child. What are the magnitude and direction of the child just before the collision
The crankshaft in a race car goes from rest to 3300{\rm rpm} in 2.7{\rm s}. What is the crankshaft's angular acceleration
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.52×10^?27 kg) traveling horizontally at 35.2 km/s enters a uniform, What effect does the magnetic field have on the speed of the particle
A man lifts a 20.0-kg bucket of concrete from the ground up to the top of a 20.0-m tall building. How much work was done by the man in lifting the bucket
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