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A meteoroid passes through a position in space where its speed is very small relative to Earth's and it is at a perpendicular distance of 19 Earth radii above Earth's surface. The meteoroid is moving in such a way that Earth captures it. What is the speed of the meteoroid when it is one Earth radius above the ground?
Two blocks M1 and M2 are connected by a mass-less string that passes over a mass-less pulley. find the acceleration of the two blocks
A simple pendulum has a length of 2.1 meter and is pulled a distance y = 0.19 meter to one side and then released. Evaluate the speed of the pendulum when it passes through the lowest point on its trajectory
A skater embeds a firecracker in large snowball and pushes it across a frozen pond at 7.6 m/s. The firecracker explodes, breaking the snowball into two equal-mass chunks. One chunk moves off at 9.3 m/s at 19° to the original direction of motion. Disc..
An airplane flying at a speed of 700km/h at a height of 900m drops a relief pacakage. Assume that the horizontal velocity of the relief package at this instant is 700 km/h. What is the range of the relief package?
A piano tuner hears one beat every 2.16 s when trying to adjust twostrings, one of which is sounding 443 Hz, so that they sound thesame tone. How far off in frequency is the other string?
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 6880 N/C. How many excess electrons or protons reside on the drop
In a rear-end collision the automobile that is accelerated to a velocity V in 0.01 s. What is the minimum velocity at which there is danger of neck fracture from whiplash?
A rope applies a horizontal force of 180N to pull a crate a distance of 2m across the floor A frictional force of 60N opposes this motion.
A 39.2-kg boy, riding a 2.67-kg skateboard at a velocity of +5.37 m/s across alevel sidewalk, jumps forward to leap over a wall. Just afterleaving contact with the board, the boy's velocity relative to the sidewalk is 5.52 m/s, 9.72° above the horizo..
Determine the temperature at which the resistance of atungstenwire will be three timesits value at 20°C. Assume its coefficient of resistivity remains constant.
A 1000kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 16s, What is the rocket's speed as it passes through a cloud 3100m above the ground
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is its angular speed at the instant it goes through an angular displacement of 4.2 rad.
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