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Q1. An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2. The coyote starts at rest 70.0 m from the edge of a cliff at the instant the roadrunner zips past in the direction of the cliff.
(a) Determine the least constant speed the roadrunner must have to reach the cliff before the coyote. At the edge of the cliff, the roadrunner escapes by making a sudden turn, as the coyote continues straight ahead. The coyote's skates remain horizontal and continue to operate while he is in flight.
(b) The cliff is 100 m above the flat floor of the desert. Find out how far from the base of the cliff the coyote lands.
(c) Establish the components of the coyote's impact velocity.
Q2. A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is linked to a movable object. The spring and object are compressed by 0.074 m, released from rest, and subsequently oscillate back and forth with an angular frequency of 14.1 rad/s. What is the speed of the object at the instant while the spring is stretched by 0.035 m relative to its unstrained length?
A string 3 meters long has a mass of 2 grams. one end of the string is attached to a wall, what is the speed of a transverse wave in this string
The intensity I of light from an isotropic point source is determined as a function of distance r from the source. What is the power of the source
A 550 N physics student stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 450N. (a) Find the acceleration of the elevator. Find the mass of the worker.
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Sketch and describe a floe control loop.
A long rod of lenght " L " and cross sectional area "A" is weighted such that when it is placed in a bucket of water it floats vertically. determine the magnitude of the buoyant force on the rod
The Doppler effect can be used to measure flow rates in blood. A sound wave is transmitted into a vein or an artery, What is the expected frequency shift
A bowling ball encounters a 0.760m vertical rise on the way back to the ball rack, as the drawing illustrates. find the gain in potential energy at the top
Suppose you are driving a car around in a circle of radius 182 ft, at a velocity which has the constant magnitude of 33 ft/s. What angle (in degrees) will the string make with the vertical
given an electric dipole moment p, in a region of uniform Eo. determine the torque of the dipole moment
The electricity received at an electric substation has a potential difference of 2.80 10^5V. If the requires output is 440V, what must be the ratio of the turns of the step-down transformation.
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