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a particle is projected with a velocity of 900ft/sec at anelevation of 60 degrees to the horizontal from the foot of a planeof inclination 30 degrees. find
(a) the range on the inclined plane and
(b) the total time of flight.
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.45 m diameter wheel. What's the rod's oscillation frequency when the train is moving at 30 m/s
A 9.00 x 15.0 swimming pool slopes linearly from a 1.00 depth at one end to a 3.80 depth at the other. What is the mass of water in the pool
A snake is sunning itself on a rock. If the snake is 0.4 m long, what is the approximate amount of radiation it absorbs from the Sun in 15 min, Estimate the temperature in the Sun on the rock
Engineers have proposed that large flywheels be used for the temporary storage of surplus energy generated by electric power plants. What is the kinetic energy of rotation of this flywheel
a car weighs 1,725 kg and is speeding on I-75 at 90 miles per hour. The brake rotors are made of 20 kg of iron and steel composite. What is the temperature change in the rotors
A grinding wheel is in the form of a uniform solid disk of radius 6.90 cm and mass 1.90 kg, how many revolutions does it turn while accelerating
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
A variable force, given by the analytical expression F = 3x2 with x in meters, acts on an object, changing only the kinetic energy of the object. Assume the particle starts out at x=0. a) Make a sketch of the force acting on the object as a function ..
A 2.00-nF capacitor with an initial charge of 5.06 µC is discharged through a 1.28-k? resistor. What is the maximum current in the resistor
A projectile is shot with initial velocity 20.0 m/s at launch angle ? = 60.0? up from horizontal. How far from the gun does the other fragment land
A 2 meter wire carrying 1 A of current is at a 90 degree angle to a magnetic field. If the current feels a force of 1 N from the magnetic field, what is the strength of the field
Light of wavelength 670nm falls on two slits and produces an interference pattern in which the third-order bright red fringe is 49mm, What is the separation of the two slits
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