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A fox locates its prey under the snow by slight sounds rodents make. The fox then leaps straight into the air, and then burrows its nose into the snow to catch its meal. If a fox jumps up to a height of 91 cm, calculate (a) the speed at which the fox leaves the snow (m/s), and (b) how long the fox is in the air(s). Ignore air resistance.
A 95.0 kg person stands on a scale in an elevator. What isthe apparent weight in each of the following situations? when the elevator is accelerating upward with an acceleration of1.80 m/s2?
An object is accelerated by a force. If the acceleration increases by a factor 2 and the mass increases by a factor 3, by what factor was the force increased? The answer must be exact.
a pendulum bob of mass m is released from a height h above the lowest point. it collision at the lowest point with
At a given instant the current and self-induced emf in an inductor are directed as indicated, find the inductance in henrys
A helium-neon laser, radiating at 632.8 nm, has a power outputof 3.0 mW. The beam diverges (spreads) at angle = 0.17 mrad. What is the power of a point source providing that intensity atthat distance
Suppose your 50.0 mm focal length camera lens is 53.5 mm away from the film in the camera. How far away is an object that is in focus
Two plates separated by a distance 18.3 mm are charged to a potential difference of 7.25 volts, Using the concept of work-energy, calculate the change in kinetic energy
A parallel-plate capacitor has square plates of edgelength 1.8 cm and a platespacing of 0.013 mm. If the gap between the plates is a vacuum, what is the capacitance?
Which of the following observations support the statement that “Every system tends to adjust by itself to have minimum Potential Energy”
Four mirrors are at right angles to one another. A light ray is incident on the first at an angle of 60. What is th angle of reflection from the third surface
The capacitors are identical except that C2 has a dielectric inserted between its plates. A 210 V battery is connected across the combination until electrostatic equilibrium is established, and then the battery is disconnected.
A model rocket is fired vertically from rest. It has a net acceleration of 17.0 m/s2. How long after liftoff does the rocket return to the ground
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