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1. If a person pushed on a door with a force of 650 N and a moment arm of 0.75 meters, what would be the moment created?
2. A defensive lineman (mass = 88.5kg) is running at 12 m/s, and a linebacker (mass = 84kg) is running at 13.2 m/s. Determine which player has the greater linear momentum, and by how much.
3. The moment of inertia about the center of mass of a 4 kg segment is 1.2 kgm2. If the moment of inertia about the segment's proximal end is 3.3 kgm2, what is the distance between the proximal end and the center of mass?
4. A gymnast takes off in a layout position with an angular momentum of 42 kgm2/s. She tucks as she begins her somersault. What will be the magnitude of change in angular velocity as her moment of inertia changes from the layout (IL = 9.2 kgm2) to the tuck (IT = 3.8 kgm2)?
5.How far out from an axis must a 1200N force be applied (i.e., what is the forces moment arm) in order to counter and hold a 90Nm torque acting in the clockwise direction?
A basketball of mass 0.45 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.72 m. How much mechanical energy was lost during the collision with the floor
A 2000kg truck traveling at a speed of 6m/s makes a 90 degree turn in a time of 4s and emerges from this turn with a speed of 4m/s. What is the magnitude of the average resultant force on the truck during this turn
A point source of light illuminates an aperture 1.96 m away. How wide is the aperture
Compute average magnetic flux through turn of inner solenoid
the magnetic field amplitude of an electromagnetic wave is 8.5E-7 T. Calculate the ampitude of the electric field if the wave is travelling in Air
A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.33 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A woman is 1.8 m tall and has a mass of 61 kg. She moves past an observer with the direction of the motion parallel to her height. What does the observer measure for her height
Review Conceptual Example 2 as an aid in solving this problem. An object is attached to the lower end of a 100-coil spring that is hanging fromthe ceiling. The spring stretches by 0.172 m. The spring is then cut into two identical springs of 50 co..
A parallel-plate capacitor is designed so that the plates can be pulled apart. What is the potential difference between the plates
A 2.1 kg mass is attached to a 0.4 m long massless string andswings as a pendulum. what is the maximum tension in the string
A 6.00 kg block starts from rest and slides down a frictionless surface incline. At what angle above horizontal is the inclined plane titled
A beam of light in air strikes a slab of glass (n= 1.50) and is partially reflected and partially refracted. Find the angle of incidence
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