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A baseball just clears a 3.20-m wall that is 113 m from home plate. If the ball leaves the bat at 35.0° and 1.20 m above the ground, what must its initial speed be?
A person pushes a 16.0 kg shopping cart at a constant velocity for a distance of 18.0 m. What is the magnitude of the force that the shopper exerts
The magnitudes of the concave and convex surfaces of a glass lens are 200 and 600 mm, respectively. What is the focal length? Is it diverging or converging?
A point rotates about the origin in the xy plane at a constant radius of 0.114 m and angular velocity of 7.40 rad/s. What is the amplitude of this motion
A fire truck connects their hose (radius r1 = 5 cm) to a fire hydrant. The underground water lines have a radius of r2 = 15 cm, How high above the end of the hose will the water reach
In a ballistics test, a 22g bullet traveling horizontally at 1300m/s goes through a 29cm-thick 320kg stationary target and emerges with a speed of 860m/s. find the target's speed just after the bullet emerges
The two conducting rails in the drawing are tilted upwards so theyeach make an angle of 30.0° with respect to the ground.
A horizontal wire of length 0.58 m, carrying a current of 7.2 A, is placed in a uniform external magnetic field, Determine the magnitude of the external magnetic field
The siren on an ambulance is emitting a sound whose frequency is 2050 Hz. The speed of sound is 343 m/s. find the wavelength and frequency of the sound you hear
A rock is projected from the edge of the top of the building with an initial velocity of 12.2 m/s at an angle of 53 degrees above the horizontal. The rock strikes the ground a horizontal distance of 25m from the base of the building. Assume that t..
a computer disk rotates at a constant angular speed of 34.1rads while being read. when searching for a file the disk
A string with a length of 3.0 m has two adjacent resonances at frequencies 112 Hz and 140 Hz. What is the wavelength of the first harmonic
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 11-g nail
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