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Two balls are launched upward from the same spot at different angles with respect to the ground. Both balls rise to the same maximum height. Ball A, however, follows a trajectory that has a greater range that that of ball B. Ignoring air resistance, decide which ball, if either, has the greater launch speed. Give your reasoning.
A 9300 kg boxcar traveling at 20m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 10 m/s. What is the mass of the second car.
A chemistry student with a mass of 75 kg is riding a steadily moving Ferris wheel. What would the normal force be on the student at the top of the wheel if the wheel's velocity were doubled
2 crewmen pull a raft, 1 crewman pulls with a force of 130 newtons at 34 degreees relative to the forward position on the raft. the 2nd crewman on the opposite side pulls at 45 degrees. Illustrate what force should the 2nd crewman pull so that the..
The dial on an AM radio contains numbers ranging from about 530 to about 1600. What is the corresponding range of wavelengths
A concave mirror has a radius of curvature of 32.0cm. What is its focal length?
a positive point charge q1 2.35 times 10-5 c is fixed at the origin of coordinates and a negative point charge q2
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 4.55 m/s2. how long does it take to stop and how far does it travel
The coldest and hottest temperatures ever recorded in Switzerland are -43.2 F (231 K) and 106.7 F(315K) respectively. What is the speed of sound in air at each temperature
The expression found in part (d) is a cubic equation. There are standard algebraic solutions to this type of equation, but it is sometime quicker and easier to use other methods. explain a way to get a reasonably accurate estimate of v (say, to th..
Three blocks, each of mass 9 kg are on a frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction, What is the magnitude of the force on block A from the hand
an airliner is cruising at a ground speed of 450 knots. a flight attendant serving drinks accidentally knocks a bottle
the distance between earth and sun is usually expressed as one astronomical unit au. using this unit find the distance
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