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A projectile passes point A with a velocity v, upward. At some time later, the projectile passes point B, with a velocity v/2, upward. In terms of v and the acceleration due to gravity g, a.) how long does it take the projectile to travel between points A and B, b.) how far apart are points A and B ?
A ladder 2.30 m long, weighing 226 N, initially lies flat on the ground. The ladder is raised to a vertical position. Compute the work done by the force lifting the ladder
Sound is passing perpendicularly through an open window whose dimensions are 1.1 m x 0.75 m. How much sound energy comes through the window in one hour
A large box with mass 45 kg is being pushed up a ramp at a 32o incline at a constant velocity by a man pushing parallel to the incline for 7.80 m, determine The force the man is pushing on the box
A skier leaves the starting gate at the top of a ski jump with an initial speed of 4 m/s. the starting position is 120 m higher than the end of the ramp, which is 3 m above the snow. FIND THE FINAL SPEED of the skier if he lands 145 m down the 20 deg..
the osmotic pressure of 8.05x10 to the negative third m solutions of cacl2 and urea at 25 degrees celcius are o.487 and
What is the coefficient of the kinetic friction of the tires and pavement.
The equation of a transverse wave traveling on a string is given by y = A sin(kx - ?t) . Data: A=11 mm, k=73 rad/m, ?= 280 rad/s. What is the amplitude? What is the frequency? What is the wave velocity? What is the wavelength? For the same wave, f..
question apparent weight a 550-n physics student stands on a bathroom scale in an 850-kg including the student elevator
A 1.50-kg ball has zero kinetic and potential energy. Samdrops the ball into a 6.00-m deep well. Just before the ball hitsthe bottom, what is the sum of its kinetic and potential energy
The length of a simple pendulum is 0.77 m and the mass of theparticle (the "bob") at the end of the cable is 0.31 kg. What is the angular frequencyof the motion
a car traveling due east at 20 m/s reverses its direction over a period of 10 seconds so that it is traveling due west at 20 m/s. What is the direction of the car's average acceleration over this period?
A charge of 7 nC is placed uniformly on a square sheet of nonconducting material of side 17 cm in the yz plane. What is the magnitude and direction of the electric field next to the sheet and proximate to the center of the sheet?
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