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A pendulum of length 1.00 m swings in a vertical plane. Whenthe pendulum is in the two horizontal positions Θ =90 andΘ =270, its speed is 5.00 m/s.
a) Find the magnitude of thecentripetal acceleration and tangetial acceleration for thesepositions.
b) Draw vector diagrams to determine the direction of thetotal acceleration for these two positions.
c) Calculate the magnitude and direction of the total acceleration.
A 54.1-kg ice skater is moving at 4.09 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole, Compare this force with her weight by finding the ratio of the force to her weight
The tackler holds onto the receiver, and the two move off together with a velocity of +1.6 m/s. The mass of the tackler is 115 kg. Assuming that momentum is conserved, find the mass of the receiver.
An astronaut travels from a distant star to the Earth at speed 0.992c. What is the distance from the star to the Earth as measured by an observer on the Earth
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road. how fast can the truck be moving without the crate sliding
A diffraction pattern forms when light passes through a singleslit. Determine the angle that locates the firstdark fringe
A point charge of +4Q is placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 3 N acts on the positive charge at the square's center.
The armature of a simple ac generator has 30 circular loops of wire, each with a radius of 10 cm. What is the maximum emf induced in the loops
An oscillator consists of a block of mass 0.600 kg connected to a spring. Find the maximum force exerted on the block from the spring
A 3 kg box is pushed across a frictionless horizontal floor with a force F = 20 N that makes an angle of 25° with the horizontal. The box moves 18 m.
An electron is accelerated by a constant electric field of magnitude 290 N/C. (a) Find the acceleration of the electron.
LC oscillators have been used in circuits connected to loudspeakers to create some of the sounds of electronic music. which is in the audible range of frequencies
A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal, What is her speed when she leaves the track
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