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A spring of spring constant k=30 N/m has a mass od 2kg on its end and is hung vertically. It is pulled 20 cm below its equilibrium position and released. What is its acceleration immedately after release?___m/s^2
A solid disk rotates in the horizontal plane atan angular velocity of 0.067 rad/s with respect to an axis perpendicular to the disk at tis center. The moment of inertia ofthe disk is 0.10 kg·m2.
A 6kg mass attached to a spring is displaced 5.5cm on a horizontal frictionless surface. If the spring constant is 75N/m, what is the angular frequency of the oscillation?
A 0.020 kilogram ball is shot from the plunger of a pinball machine. Because of a centripetal force of 0.027 N, the ball follows a circular arc whose radius is 0.23 m. Compute what is the speed of the ball
An object is 13 cm from the surface of a reflective spherical Christmas-tree ornament8.27 cm in diameter. What is the position of the image? What is the magnification of the image?
A race car starts from rest on a circular track of radius 490 m. The car's speed increases at the constant rate of 0.740m/s2. find the speed of the race car
A 250-g cart is accelerated down a track by a net force of 35 N. What is the acceleration of the cart
A car tires contain 0.0380 m3 of air at a gauge pressure of 2.20 × 105 N/m2. Find how much more internal energy does the tire have
The force vector A has a magnitude of 75.0 newtons (N) and points due east. The force vector B has a magnitude of 138 N and points 75.6 ° north of east. Find the (a) magnitude and (b) direction of A - B
Calvin (mass m) is sliding down a snow-covered hill (height h) on his frictionless toboggan. Exactly halfway down the hill he hits Hobbes (also mass m) who lands in Calvin's lap and the two of them continue down the hill. How fast are they going a..
A spaceship of mass 2.30×106kg is cruising at a speed of 6.00×106m/s when the antimatter reactor fails, blowing the ship into three pieces. What is the speed of the third piece
At time t=0 a proton is a distance of 0.360 m from a very large insulating sheet of charge and is moving parallel to the sheet with speed 980m/s. What is the speed of the proton at 5.00×108 s
A 5.9 g bullet leaves the muzzle of a rifle by a speed of 330 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of the rifle?
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