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A proton (mass 1.67 × 10 ?27kg) is moving at 1.15 ×10 ?6m/s directly toward a stationary helium nucleus (mass 6.64 × 10 ?27kg).
a.) After a head-on elastic collision, what is the proton's velocity?
b.) After a head-on elastic collision, what is the helium's velocity?
290 Kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
What is speed of the car just before it lands safely
A 47-g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.2 m.
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 3.38 kg. What is the moment of inertia of the object
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 4.0 N starting from rest. What is the speed of the sack after Sam has pushed it a distance of 20 cm
The howler monkey is the loudest land animal and can be heard upto a distance of 2.5 km. The acoustic power emitted by the howler, in mW is
A 1.10kg , horizontal, uniform tray is attached to a vertical ideal spring of force constant 190N/m and a 295g metal ball is in the tray. How fast is the ball moving just as it leaves the tray
A skier leaves the end of a horizontal ski jump at 22. m/s and falls 3.20 m before landing. how far horizontally does the skier travel in the air before landing
A large balloon of mass 233 kg is filled with helium gas until its volume is 327 m3. Assume the density of air is 1.29 kg/m3, Calculate the buoyant force acting on the balloon
A block of mass 2.0 kg is attached to a horizontal spring that has a force constant of 1.70 103 N/m, Find the work done by initially compressing the spring
The drive motor is shifted to turn the carousel at a higher constant rate of rotation, Calculate the coefficient of static friction between the bag and the carousel
A model rocket blasts off and moves upward with an acceleration of 15m/s^2 until it reaches a height of 35m, what is the total duration of the rocket's flight
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