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Q. A 5 g bullet with an initial velocity of 95 m/s lodges in a block of wood and comes to rest at a distance of 6 cm. assume the bullet undergoes a constant negative acceleration; it slows at a constant rate. How much time does it take for bullet to stop?
Q. An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 200 N.(i) What is the equivalent spring constant of the bow?(ii) How much work is through in pulling the bow?
Estimate the electric field at a point 2.40 cm perpendicular to the midpoint of a uniformly charged 2 m-long thin wire carrying a total charge of 4.10 microC.
What is the magnitude of net force causing the acceleration.
An airplane is flying horizontally with a speed of 1000 km/h(280m/s) when an engine falls off. avoid air resistance,assume it takes 30s for the engine to hit the ground.
A broad beam of light of wavelength 642 nm is incident at 90° on a thin, wedge-shaped film with the index of refraction 1.50. An observer intercepting light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. B..
Question on a planet similar to Earth
calculate the total mechanical energy of the glider at any point in its motion. Calculate the maximum speed of glider.
In a model AC generator, a 500-turn rectangular coil 8.0 cm by 20 cm rotates at 120 rev/min in a uniform magnetic field of 0.60 T. what is the maximum emf induced in the coil.
A toy train is pushed forward and released at xi = 1.60 m with a speed of 2.60 m/s. It rolls at a steady speed for 1.30 s, and then one wheel begins to stick. The train comes to a stop 6m from its starting point. What is the train's acceleration a..
with what speed would the arrow leave the bow.
Calculate the total cost ($/kWh) of electricity delivered to the grid including fuel cost and debt charge with O&M of 5% added to the total.
estimate the speed of the car just before braking. how much time passes before the brick lands on the ground..
What current is in the primary circuit. A proton moves at a speed of 8.0 103 m/s as it passes through a magnetic field of 0.55 T. Find the radius of the circular path. Note down that the charge carried by the proton is equal to that of the electron..
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