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1. A spring with a spring constant k = 1600 N/mis at rest on the bottom of an inclined plane. A 7.0-kg blockslides down the plane and makes contact with the spring at point Aas shown. After contact, the spring is compressed to point B, 0.20m from point A, where the speed of the block is zero m/s. What was the speed of the block just before contact with the spring?
2. A cylinder with a diameterof 0.240 m is placed between the plates of a hydraulic press asillustrated in the drawing. A 4.45 × 105-N forceis applied to the cylinder. What is the pressure on the end of the cylinder due to the applied force?
A cannonball is fired from a gun and lands 740 meters away at atime 20 seconds. What is the x-component and y-component of the initialvelocity? The maximum height of the cannonball?
In two attempts, a javelin is thrown at angles of 35° and 60° respectively, to the horizontal from the same height and at the same speed in each case. How many times farther
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.60 mm. Calculate the charge on each plate
A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. To what maximum height will it rise after leaving the ramp
A bungee cord is stretched between two poles with a force of 447 N, What is the velocity of a wave on this bungee cord
A 50.0 kg child stands at the rim of a merry-go-round of radius 2.10 m, rotating with an angular speed of 2.90 rad/s. What is the child's centripetal acceleration
An electron experiences the greatest force as it travels 1.02*10^6 m/s in a magnetic field when it is moving horizontally. The force is upward and of magnitude 1.75*10^-12 N. What is the magnitude of the magnetic field?
approximately how far does it move while stopping? Express your answer to one significant figure and include the appropriate units.
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 21 m/s at an angle of 54° above horizontal.
Susie Maroney from Australia set a women's record in long-distance swimming by swimming 93.625 km in 24 h. If she had a mass of 55 kg, how much kinetic energy did she have
Find the mechanical energy of a block-spring system having a spring constant of 0.67 N/cm and an oscillation amplitude of 1.5 cm
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