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A 0.40 kg ball, attached to the end of a horizontal cord, isrotated in a circle of radius 1.3 m ona frictionless horizontal surface. If the cord will break when thetension in it exceeds 63 N, what is the maximum speed the ball can have?
m/s
A hydrogen atom in a state having a bindingenergy (the energy required to remove an electron) of0.85 eV makes a transition to a statewith an excitation energy of 10.2 eV. What is the energy of the photon emitted as a result of the transition
A 1000.0 kg car traveling at 50.0 miles per hour on a long, What was the average coefficient of sliding friction between the car's tires and the road
A pitot tube on the nose of an airplane measures a stagnation pressure of 2.5 atmospheres. what is the speed of the airplane
An event occursin system K' at x' = 2m , y'=3.5mz'= 3.5 m and t'=0. What are the coordinates of the event in sytem
A charged particle is injected at 215 m/s into a 0.0739-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
a cylindrical container of initial volume v0 contains n atoms of a classical ideal gas at room temperature t300 k. one
Two charges of equal magnitude exert an attractive force of 2.5×10-4 N on each other. If the magnitude of each charge is +3.0? C, how far apart are the charges
A particle oscillates with S.H.M. The maximum displacement from its mean position is 0.5 meter and frequency of motion is 10 Hz. at time t=0, particle is located at 0.15 meter and has the velocity of 24.0 m/s towards the negative x-axis.
A small boat is moving at a velocity of 2.95 m/s when it is accelerated by a river current perpendicular to the initial direction of motion. what will the new velocity of the boat be after 29.5 s
A 55 kg block of ice slides down a frictionless ramp that is 2.0 m long and 0.91 m high. Find the force exerted by the worker
A dentist's drill starts from rest. After 2.90 s of constant angular acceleration it turns at a rate of 2.0 multiply.gif 104 rev/min. Determine the angle (in radians) through which the drill rotates during this period
One of the 61.0cm -long strings of an ordinary guitar is tuned to produce the note B3 (frequency 245 Hz) when vibrating in its fundamental mode. Find the speed of transverse waves on this string
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