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An astronaut on the moon fires a projectile from a launcher on a level surface so as to obtain the maximum range. If the launcher gives the projectile a muzzle velocity of 25 m/s, what is the range of the projectile? Hint the acceleration due to gravity on the moon is only one sixth of that on the earth.
a bicycle has wheels with a diameter of 0.680 m. it accelerates uniformly and the rate of rotation of its wheels
A bar is 2.0 centimeter thick and 3.0 centimeter wide. Determine its total mass
What voltage must be applied to the 5.00 µF capacitor of a heart defibrillator to store 600 J in it, Find the amount of stored charge
Robert has just bought a new model rocket, and is trying to measure its flight characteristics. how much work is done by the drag force on the rocket during its ascent
The motion of a 25.0 kg mass on the end of a string is uniform circular motion. The magnitude of the tangential velocity of the mass is 5.0 m/s, Calculate the angular momentum of the mass
A 70.0-g object connected to a spring with a force constant of 25.0 N/m oscillates with an amplitude of 6.00 cm on a frictionless, horizontal surface. Find the total energy of the system
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=47800 N. What is the magnitude of the lift force
A 1200-kg car rolling on a horizontal surface has speed v=65km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring
The sun and solar system actually are not at rest in our milky way galaxy. what would be the mass of the galaxy
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
A crate of mass 10.2 kg is pulled up a rough incline with an initial speed of 1.60 m/s. What is the change in kinetic energy of the crate
Two long parallel wires carry currents of 2.83 A and 5.41 A. Find the separation distance of the wires expressed in millimeters
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