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An insect trapped in a circular groove of radius 12 cm moves along the groove steadily and completes 7 revolutions in 100 s. (a) What is the angular speed, and the linear speed of the motion? (b) Is the acceleration vector a constant vector ? What is its magnitude?
In a women's 100-m race, accelerating uniformly, Laura takes 2.00 s and Healan 3.00 s to attain their maximum speeds, What is the acceleration of each sprinter
What is the speed of the center of mass
reviews the concepts that are involved in this problem. A child is twirling a 0.0211-kg ball on a string in a horizontal circle whose radius is 0.0866 m. Determine the centripetal force acting on the ball
An air puck of mass m1 = 0.24 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. What is the horizontal force acting on the puck
An astronaut (mass of 100 kg, with equipment) is headed back to her space station at a speed of 0.750 m/s but at the wrong angle. What is her new direction (relative to the initial direction)
air traffic controllers usually describe the position of an aircraft relative to the airport by altitude, What are the x, y, and z components (in meters) of hte position vector
An astronaut is stuck in space with no fuel for his thrusters. He is 250 m away from his ship and only has a heavy wrench in his possession. How long does it take the astronaut to reach his ship
A person with a mass of 71.6 kg and a volume of 0.089 m3 floats quietly in water. find the volume of the person that is above the water
You are to drive to an interview in another town, at a distance of 300 km on an expressway. The interview is at 11:15 a.m. You plan to drive at 100 km/h, so you leave at 8:00 a.m. to allow some extra time. You drive at that speed for the first 110..
A beam of light enters a cube of flint glass (n = 1.65) at a 24 degree angle from the normal. Calculate the exact angles the light travels at
A visitor to a lighthouse wishes to determine the height of the tower. She ties a spool of thread to a small rock to make a simple pendulum, What is the height of the tower
A firm wants to determine the amount of frictional torque in their current line of grindstones, find the frictional torque exerted on the grindstone
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