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A spring-loaded toy gun is used to shoot a ball of mass straight up in the air, as shown in the figure. (Figure 1) The spring has spring constant . If the spring is compressed a distance of 25.0 centimeters from its equilibrium position and then released, the ball reaches a maximum height (measured from the equilibrium position of the spring). There is no air resistance, and the ball never touches the inside of the gun. Assume that all movement occurs in a straight line up and down along the y axis. Find the muzzle velocity of the ball (i.e., the velocity of the ball at the spring's equilibrium position ). Find the maximum height hmax of the ball.
A 65 kg high jumper starts his push-off phase with his center of mass .45 m above groung and velocity of 0 m/s. How much work did the mat do on the high jumper
A transformer has 380 primary turns and 1220 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What is the output voltage and input current
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
Calculate the Reynolds number for 25C water flow in a 1-in nominal diameter sanitary pipe at 0.5 kg/s
A liquid with a density of 55 lbs/cubic ft is traveling through a pipe at a velocity of 115 ft/sec and its static pressure is 15 psi, what is its total head in ft
A block weighing 60.0 N rests on a plane inclined at 25.0° to the horizontal. A force F is applied to the object at 44.0° to the horizontal, pushing it upward on the plane. The coefficients of static and kinetic friction between the block and the pla..
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. What is the total charge of the protons that must be fired at the tumor
A man walks at 3 m/s on a still day along the line between two fire stations. Find the apparent frequency of each whistle
train engine has a mass of 2.1 x 107 and is moving acrossed a bridge at 23.9 miles per hour what is the kinetic
A copper rod has a length of 1.8 m and a cross-sectional area of 4.0 × 10-4 m2. What is the mass of ice per second that melts
Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface
A compound microscope has an objective lens of focal length 10.3 mm with an eyepiece of focal length 15.0 mm, What is the overall magnification of this microscope
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