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A 300 g bird flying along at 5.7 m/s seesa 10 g insect heading straight toward it with a speed of 35 m/s (as gauged by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch.
What is the bird's speed immediately after swallowing?
A wire is 1.3 m long and 0.93 mm2 in cross-sectional area. It carries a current of 5.7 A when a 3.0 V potential difference is applied between its ends. Calculate the conductivityσ of the material of which this wire is made.
A double concanve lens has equal radii of curvature 15.1 cm. What is the index of refraction of the lens material
an rc series circuit has r 71.5omega and c 580nf . the series combination is connected across a 200v rms 68hz power
A person wearing a seat belt can withstand an acceleration of -3.0 x 10^2 m/s^2. Explain how thick should barriers be to safely stop a car that hits a barrier at 110 km/h?
A golf ball of mass 0.050 kg is at rest on the tee and has a velocity of 102 m/s immediately after being struck. what was the club velocity before the collision
A well-engineered ski jump is less dangerous than it looks because skiers hit the ground with very small velocity components perpendicular to the ground. What is the slope of the ground in the landing zone
An energy of 0.1 J is stored in the metal ball on top of a Van de Graaff generator. A spark carrying 1 micro coulomb (10^-6 C) discharges the ball. What was the ball potential relative to ground?
For a science fair competition, a group of high school students build a kicker-machine that can launch a golf ball from the origin with a velocity of 11.3 m/s, How high will be the highest point of trajectory
De-orbit maneuvers are done to lower the perigee of the orbit to 60miles (or less). Calculate the minimum change in velocity (delta V)required for the Space Shuttle to decrease its altitude to 60 milesif its orbiting with an apogee of 236 miles an..
A bullet with mass m=9.5 gram and initial velocity v=630 m/s is fired into a block (mass M = 5.4 kilogram) that is hung by two strings. Consider the conservation of linear momentum, determine the velocity of the bullet+ block system right after the ..
A golfer imparts a speed of 37.5 m/s at an angle 50.0 degree above the horizontal. The tee and the green art at the same elevation. Determine how much time does the ball spend in the air
The 60kg cradle A is carrying the 12 kg pipe B at the speed of 8 m/s when it hits the rigid wall. suppose all the impacts are plastic, determine the speed of the pipe immediately after the impacts. Neglect friction.
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