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Towns A and B in Figure P3.49 are 80.0 km apart. A couple arranges to drive from town A and meet a couple driving from town B at the lake, L. The two couples leave simultaneously and drive for 2.50 h in the directions shown. Car 1 has a speed of 90.0 km/h. If the cars arrive simultaneously at the lake, what is the speed of car 2?
Two converging lenses having focal lengths of f1 = 10.5 cm and f2 = 20.0 cm are placed d = 50.0 cm apart. Is the final image upright or inverted
Two masses are on a frictionless horizontal surface moving by 2 perpendicular directions (m1=m & m2=3m). After the collision the m1 mass stops. What is the velocity of mass m2 after the collision, if before the collision of the masses v1=5m/s and v2=..
A convex mirror with a focal length of 0.25 m forms a 0.081 m tall image of an automobile at a distance of 0.23 m behind the mirror
A satellite is put in a circular orbit about Earth with a radius equal to 45% of the radius of the Moon's orbit. What is its period of revolution in lunar months
A car goes from 40 m/s to 80 m/s in a distance of 200 meter. Determine what is its average acceleration
A woman on a rocket traveling at 0.82c (with respect to Earth) observes a meteor come from in front of her and pass her at 0.85c
A 0.35 mass is attached to a spring with a force constant of 26 and released from rest a distance of 3.9 from the equilibrium position of the spring. What is the maximum speed of the mass
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
After landing, a jetliner on a straight runway taxis to a stop at an average velocity of -32.0 km/h. what are the planes initial velocity and acceleration
Energy [define work and energy; kinetic energy and gravitational potential energy (incl. trends); (total) energy; law of Conservation of Energy (LCE); dropping object as illustration of LCE (detail ); energy transformation
An experimenter arranges to trigger two flash bulbs simultaneously, What is the time interval between them according to her
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. How high will the ball rise
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