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Question1
Prairie Dogs live in underground burrows with at least two entrances. One entrance is higher above ground and open to a stream of air when a breeze blows from any direction. A second entrance at ground level is open to almost stagnant air. How does this construction create airflow during the burrow?
Question2
Heather and Jerry are standing on a bridge 55m above a river. Heather throws a rock straight down with a speed of 15 m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Overlook air resistance. How much time elapses between first splash and second splash?
Question3
As you sit in your parked car, you glance in convex side mirror with radius of curvature R = -125cm and notice a jogger approaching. If the jogger is running at a speed of 2.50m/s, how fast is her image moving as she is 10m away?
A car travelling at 23 m/s runs out of gas while travelling up a 20 degree slope. How far up the hill will it coast before starting to roll back down.
A slide projector has a lens of focal length 150 mm. An image of 100 cm by 100 cm is formed of a slide whose dimensions are 50 mm by 50 mm
A small conductive rod of length 1.4 m moves with a constant velocity v=11 m/s in a direction parallel to a long wire carrying a current of 34 A. Calculate the electric potential induced across the rod
Find the potential 1.18 cm from a proton. The Coulomb constant is 8.9876 × 10^9 N m^2/C^2 and the elemental charge is 1.602 × 10^?19 C
An airplane pilot sets a compass course due west and maintains an airspeed of 213km/h. Find the magnitude of the wind velocity
A thin block of soft wood with a mass of 0.074 kg rests on a horizontal frictionless surface. Calculate the initial and final kinetic energies of the system
A 150g ball and a 250g ball are connected by a 34cm long, massless, rigid rod. The balls rotate about their center of mass at 130 . what is the speed of ball of 150 g.
suppose that visible light enters a Plexiglas cube containing water at a 20o angle of incidence, travels through the water and exits the cube.
The radii of curvature of the surfaces of a thin converging meniscus lens are R1 = 12.0cmand R2 = 28.0cm. Is the final image erect or inverted with respect to the original object
An Escort and a Camaro traveling at right angles collide and stick together. What was the speed of the Camaro
A yo-yo is made from two uniform disks, each with mass m and radius R, connected by a light axle of radius b. Find the angular acceleration of the yo-yo
A mass , m=1.75 kg, is held between two springs having spring constants 30 N/m and 75 N/m respectively, Find the angular frequency, w, for small oscillations
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