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An airplane has a speed of 250 km/hr and is climbing at an angle of 30o above the horizontal when it drops bomb. The horizontal distance between the release point and the point where the bomb strikes the ground is 1000 m. Determine how long was the bomb in the air? Determine how high was the plane when it dropped the bomb?
A horizontal plywood disk with mass 7.40kg and diameter 1.12m pivots on frictionless bearings about a vertical axis through its center. Find the magnitude and direction of the angular velocity of the disk relative to the earth
A straight object of length 1.9 cm lies along the central axis of a spherical mirror with focal length 7.2 cm. What is the length of its image in the mirror
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V greatest potential difference operating at 5000 rad/s .
In a common test for cardiac function the patient walks on an inclined treadmill. Find the power required from a 75 kilogram patient when the treadmill is sloping at an angle of 15o and the velocity is 3.3 km/h.
A simple harmonic oscillator has an amplitude of 5cm, a spring constant of 5.0N/m, and a maximum speed of 10 m/s. What is the speed when it reaches half of the amplitude
If a heat engine absorbs 940.0 J of heat from the hot reservoir and exhausts 330.0 J of heat to the cold reservoir, what was the work done by the engine
he filament of a certain lamp has a resistance that increases linearly with temperature. What is the change in temperature of the filament
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 301.0 Hz. The tuner hears 2.0 beats per second. What was the original frequency of the untuned string
q1. below are birds-eye views of six identical toy cars moving to the right at 2? various forces act on the cars with
An electron (mass: 9.11x10-31 kg; charge:1.60x10-19 C) moves from location A to location B solely under the influence of conservative forces, what is the speed of the electron at this point
Unpolarized light of intensity I0 is incident on three polarizing filters. The axis of the first is vertical, that of the second is 36° from vertical, What light intensity emerges from the third filter
The fan blades on a jet engine make one thousand revolutions in a time of 76.5 ms, What is the angular frequency of the blades
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