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An astronaut on the Moon fires a projectile from a launcher ona level surface so as to get the maximum range. If the launchergives the projectile a muzzle velocity of 23 m/s, what is the range of the projectile?[Hint: The acceleration due to gravity on the Moon is only onesixth of that on the Earth.]
X rays with a wavelength of 0.14nm undergo first-order diffraction from a crystal at a 73 degree angle of incidence. What is the angle of second-order diffraction
In a "Rotor-ride" at a carnival, people rotate in a vertical cylindrically walled "room." pt a If the room radius was 5.2 , and the rotation frequency 0.35 revolutions per second when the floor drops out, what minimum coefficient of static friction k..
Two 34.8-cm metal rods, one made of copper and one made of aluminum, are placed end to end, touching each other. How far does the other end of the system of rods move
You are told that the linear "drag coefficient" due to air resistance for a particular object is 0.32 N · s/m, Find the magnitude of the terminal velocity of this object when dropped from rest
A 0.030 kg lead bullet hits a steel plate, both initially at 20?C. The bullet melts and splatters on impact. What is the minimum speed the lead bullet must have in order to melt on impact
Standing at a crosswalk, you hear a frequency of 520 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 455 Hz. Determine the ambulance's speed from these observations.
How is the voltage divided among resistors in parallel and What happens to resistance when resistors are connected in parallel
In a two-slit experiment, the third bright fringe away from the central fringe is observed at an angle 7 degrees. what is the distance between the two slits
A bicyclist climbs a 2.0km long hill that makes an angle of 7.0° with the horizontal. The total weight of the bike and rider is 750N. How much work is done on the bike and rider by gravity? (The answer given in the textbook is: -180kJ) I'm having tro..
7.03 g of phosphorus reacts with bromine to form 61.39g of phosphorus tribromide, How many grams of bromine reacted in this reaction
A 3000-kg Ferris wheel accelerates from rest to an angular speed of 0.17rad/s in 11s, calculate the net torque on the wheel
Block 1, of mass m1 = 0.700kg , is connected over an ideal (massless and frictionless) pulley to block 2, of mass m2, Find the mass of block 2
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