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A crow flying at 2 m s in the horizontal direction (parallel to the flat ground) opens its beak to caw at another bird and accidentally drops a piece of bread he was carrying, from a height of 10m above the ground. The bread is released with no initial vertical velocity.
(a) How long does it take for the bread to hit the ground?
(b) How far does the bread travel horizontally before it lands?
(c) What is the velocity (both components, or magnitude and direction) of the bread just before it hits the ground?
(d) What is the speed of the bread just before it hits the ground?
An unstable particle with a mass equal to 3.34 x 10-27 kilogram is initially at rest. Calculate the masses of the fragments
Most telephone cables are complete of copper wire of either 24 or 26 guage. If the resistace of 24-gauge wire is 137 Ω/mile and the resistance of 26-guage wire is 220Ω/mile, what is the ratio of the diamer of 24-guage wire to that of 26-guage wire?
The outer edge of a rotating Frisbee with a diameter of 29cm hasa linear speed of 3.7m/s. What is the angular speed of the Frisbee?
make sure to label the graphs with units and values to indicate any critical points of the ball's motion.
A grinding wheel in the shape of a solid disk is 0.300 m in diameter and has a mass of 2.50 kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy
a proton and an alpha particle q 2e m 4 u are fired directly toward each other from far away each with an initial
Rare 1918 "Jenny" stamp, depicting a misprinted, upside-down Curtiss JN-4 "Jenny" airplane, was sold at auction for $525,000. A collector uses a simple magnifiying glass to examine the "Jenny," obtaining a linear magnification of 2.4 when the stam..
A man pushes a block with a force of 350N for 15 seconds. What is the impulse on the block?
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
A car is traveling on a straight road and always heads in the same direction. The car starts from rest, undergoes constant acceleration for (tau) seconds to reach a velocity of 45 m/s, and travels afterward at this constant velocity of 45 m/s.
X rays with a wavelength of 0.14 nm undergo first-order diffraction from a crystal at a 70^\circ angle of incidence. What is the angle of second-order diffraction
Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up in a row on a frictionless table. How much force does the 4.0 kg block exert on the 5.0 kg block
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