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A Bullet of mass 14g strikes a block of mass 1.2kg, which is at rest on a horizontal frictionless surface and is attached to a coil spring shown. The bullet comes to rest in the block. The impact compressed the spring 10 cm. it takes a force of 18 N to compress the spring by 2cm.
Find the velocity of the block just after impact?
What was the initital speed of the bullet?
Find the max potential energy of the spring during maximum compression?
submarine on the ocean surface receives a sonar echo indicating an underwater object. The echo comes back at an angle of 20 degree above the horizontal and the echo took 3.04s to get back to the submarine What is the object's depth?
A toy train rolls around a horizontal 1.30 diameter track. The coefficient of rolling friction is 0.10.
Two balls undergo a perfectly elastic head-on collision, with one ball initially at rest. If incoming ball has a speed of 200 m/s. What is the final speed of the incoming ball if it is much more massive than stationary ball.
Using the equation F=m v^2/r for a force an object in circular motion. Find the radius r of motion of a m=1.6 kg ball travelling in a circular path acted upon by a centripetal force F=7N.
What is the oscillator's total mechanical energy as it passes through a position that is 0.749 of the amplitude away from the equilibrium position
A blue puck with a mass of 3.60×10?2kg , sliding with a speed of 0.180m/s on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass m, Find the mass m of the red puck
How many 185 W lightbulbs can you use in a 191 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each lightbulb is 131 V.)
Suppose a bullet of mass m = 6.77g is fired into a ballistic pendulum whose bob has a mass of M = 0.693kg. What was the speed of the bullet-bob combination immediately after the collision takes place
A proton has a kinetic energy of 8.5 MeV. If its momentum is measured with an uncertainty of 4.0%, what is the minimum uncertainty in its position
A point charge +6.7 uC is placed at the origin, and a second charge -3.6 uC is placed in the X - Y plane at (0.40 m , 0.55 m ). Where should a third charge be placed in the plane so that the net force acting on it is zero? Express your answers usi..
Physics two skaters with masses of 65 kg and 45 kg, respectively stand 8.0 m apart each holding one end of a rope. If they pull themslevles along the the rope until they meet explain how far does each skater travel?
The Superconducting magnet for the experimental MRI studies at a laboratory is a 1 m long solenoid of 60 cm diameter, What is the inductance of the magnet?
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