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An outfielder throws a baseball with an initial speed of86.8 mi/h. Just before an infieldercatches the ball at the same level, its speed is 90 ft/s. How much of the ball's mechanical energy is dissipated by air drag? (The weight of a baseball is 9.0 oz.)
The team monitoring a space probe exploring the outer solar system finds that radio transmissions from the probe take 1.77 hours to reach earth. How distant (in meters) is the probe
a pot of hot water is boiling on your stove. the pot is in the shape of a round cylinder made of aluminum which is 10
If the maximum acceleration the vehicle's brakes are capable of is -5 m/s2, what is the maximum reaction time of the motorist that would allow her or him to avoid hitting the deer.
A woman with a mass of 55.0kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.470rev/s, Calculate the magnitude of the total angular momentum of the woman-plus-disk system
A person is riding a bicycle, and its wheels have an angular velocity of 12.1 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
The maximum induced emf in a generator rotating at 249 rpm is 44 V. How fast must the rotor of the generator rotate
Force F = (-1.0 N) + (1.0 N) acts on a particle with position vector r = (5.0 m) + (5.0 m). What is the torque on the particle about the origin
A car starts from rest at a stop sign. It accelerates at 4.0 m/s2 for 9 seconds, coasts for 6 s, How far apart are the stop signs
Microcontrollers usually do not include D/A converters but you can easily create a crude version of one usually signle digital I/O pin. This can be done by outputting a variable-width pulse train to an RC circuit.
A grinder consists of a solid 15 kg disk with a diameter of 57 cm. A when active, the disk rotates at a rate of 83 rad/sec. find the rate of angular acceleration of the disk
An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 13,500 J of energy is added to the rod by heat, what is the change in length of the rod
A soccer ball is kicked with an initial speed of 30 m/s at an angle of 25 degrees with respect to the horizontal. Find the maximum height reached by the ball
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