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A boy tosses a ball in the vertical direction off the side of a cliff. if the initial velcoity of the ball is 15 m/s upward, and the ball is released 40m from the bottom of the cliff, determine the maximum height sb reached by the ball and the speed of the ball just before it hits the ground. during the entire time the ball is motion, it is subjected to a constant downward acceleration of 9.81 m/s^2 due to gravity neglect the effect of air resistance.
A curve of radius 40 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely create the curve?
You are driving home from school steadily at 94 for 120. It after that begins to rain and you slow to 60. You arrive home after driving two hours and 20 minutes. How far is your hometown from school.
A block of unknown mass, m, is brought into the configuration shown. It was measured that upon release the block shot upward a maximum distance of 2m. Calculate the mass of this block? The upper spring has a natural length of 1m, and the lower spr..
Two speakers are emitting simple harmonic sound waves of frequency 258 Hz and 256 Hz. Describe the sound heard by a listener
find the magnitude of the acceleration of the boy. Find the average magnitude of the induced emf if the change in shape occurs in 4.14 s, and the local 0.120 T magnetic field is perpendicular to the plane of the loop.
Consider two vectors where F_1= 84 N, F_2 = 46 N, theta_1= 5 degrees, and theta_2 = 144 degrees, measured from the positive x axis with the counter-clockwise angular direction as positive. What is the magnitude of the resultant vector F = F_1 + F_..
A 1000-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam.
If the plant produces electric energy at the rate of 1.3GW , how much exhaust heat is discharged per hour
An insulating rod of length 14.0 cm is bent into the shape of a semicircle and has a uniform total charge of -7.5 uC, Calculate the magnitude and direction of the electric field at the center of the semicircle arc
A standing wave is created on a string of length 1.0 m and fixed at both ends. What is the wavelength of the third harmonic
A small ball of mass 0.60 kg is attached to one end of a 1.15 m long massless rod, and the other end of the rod is hung from a pivot
Illustrate what angular speed must such a cylinder have so that the centripital acceleration at its surface equals the free-fall acceleration on Earth?
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