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An explosion breaks an object into two pieces, one of which has 2.40 times the mass of the other. If 7300 Joule were released in the explosion, obtain how much kinetic energy did each piece acquire?
heavier piece J
lighter piece
J
A cricket ball is bowled at a speed of 144 km/hr. suppose the ball diameter is 70 mm and a drag coefficient 0.45, estimate the drag force in newtons which would be acting on the ball.
two point charges of 30 nc and -40 nc are held fixed on an x axis at the origin and at x 76 cm respectively. a
a car moves with a speed v on a horizontal circular highway turn of radius is r 100. assume the height of the cars
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 1.6 cubic meters of sea water. What is the buoyant force acting on the object
Four identical 7 mC charges are placed on a neutrally- charged penny, Determine the resulting potential in the center of the penny due to the four charges
a point charge 4.20 uc is held fixed at the origin. a second point charge 1.60uc with mass of 2.80times10-4kg is placed
An object of mass 3.3 kg is projected into the air at a 55° angle. It hits the ground 3.4 s later. What is its change in momentum while it is in the air
A 2.11-cm2 wafer of pure silicon is irradiated with electromagnetic radiation having a wavelength of 775 nm. How many electron-hole pairs are produced in one second
A researcher observes hydrogen emitting photons of energy 2.55eV. What are the quantum numbers of the two states involved in the transition that emits these photons
You are an astronaut (m = 100 kg) and travel to a planet that is the same radius and mass as the Earth, What is your apparent weight at the equator of this planet
Two metal disks, one with radius = 2.47cm and mass = 0.850kg and the other with radius = 5.00cm and mass = 1.58kg , are welded together and mounted on a frictionless axis through their common center. .
Let's say your can has covers a distance of 3 m in 5 seconds under constant acceleration. Use kinematics equations and Newton's second law to calculate the acceleration of the can
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