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Projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary. You need your projectile to land 220 m from its launch point. What horizontal velocity do you need to program into the system?
A rock is tossed straight up with a velocity of 34.5 m/s. When it returns, it falls into a hole 17.1 meter deep. Find is the rock velocity as it hits the bottom of the hole
An artillery shell is fired at an angle of 63.8 above the horizontal ground with an initial speed of 2000 m/s. Find the total time of flight of the shell
A cyclist is moving down a steep hill that has a grade of 20%. The rider is traveling at 3.5 m/s. The combined weight of the rider and cycle is 800N and the dynamic coefficient of friction between the tires and the road is 0.7. If the rider sudden..
A horizontalforce of 190 N is applied toa stationary wooden box in one direction, and a 700 N horizontal force is applied in theopposite direction. What additional force is needed for the box toremain stationary?
As you stand on a pier looking at a harbor, the waves created by a large freighter come ashore. You estimate the wavelength to be 3.0 m, What is the frequency of the wave in hertz
a positive charge q1 is located to the left of a negative charge -q2. on a line passing through the two charges there
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 21 m/s at an angle of 31 degrees above the horizontal
a person pulls a 10kg weight across a floor a distance x=2.0m by pulling on a rope with 50N directed 15 degrees above the horizontal. compute the work done by each one
A certain light source is found to emit radiation whose peak value has a frequency of 8.28 Ã- 1014 Hz. Find the temperature of the source
A 1.5 meter tall woman stands 5 meter in front of a camera with a 4 centimeter focal length lens. Evaluate what is the size of the image formed on film
a block of wood of mass m1= 1 kg slides to the right on a frictionless horizontal table with a speed of 30 m/s. how much is the spring compressed by the wood
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.65 105 Pa and the pipe radius is 2.80 cm. Find the speed of flow in the upper section
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