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Chameleons use their tongues to catch their prey. Their tongues typically accelerate at 250 m/s2 for up to 20 milliseconds, then they travel at constant speed for a further 30 milliseconds. During this total duration, of acceleration plus constant motion, of 50 milliseconds, determine how far does the tongue reach?
the magnitude j of the current density in a certain wire with a circular cross section of radius r 2.50 mm is given by
A jet plane lands with a speed of 98 m/s and can accelerate at a maximum rate of 5.90 m/s2 as it comes to rest. (a) From the instant the plane touches the runway.
An astronaut with a steady heartbeat of 57 beats per minute travels at a constant speed of 0.91c, relative to earth. what was the heart rate
What is the probability that a diatomic molecule, modeled as a harmonic oscillator will be observed outside the classical limit of motion?
To find the height of an overhead power line, you throw a ballstraight upward. What is the height of the power line
if 1.0 m3 of concrete weighs 4.5 104 n what is the height of the tallest cylindrical concrete pillar that will not
A singly charged positive ion has a mass of 2.50 x10-26 kg. After being accelerated during a potential difference of 100V, the ion enters a magnetic field of .500 T, in a direction perpendicular to the magnetic field. Compute the radius of the path o..
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
The typical radius of an atomic nucleus is about 5.0x10-15m. The velocity of a proton is measured to an accuracy of plus or minus 1.0x104 m/s. Compute the uncertainty in position of this proton.
A red laser, with a wavelength of 640 nm, shines on a diffraction grating with a grating spacing of 500 lines/mm. The resulting diffraction pattern is observed on a screen 1.00 meters away from the grating.
The security alarm on a parked car goes off and produces a frequency of 1200 Hz. The speed of sound is 343 m/s. At what speed are you driving
A circular coil of wire with 70.0 Loops and a radius of 0.250 m is placed in a magnetic field of 10.0 T and oriented so that the coil is perpendicular to the field. Find the maximum power developed in the coil
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