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You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.05 m/s, directed downward, and it hits the ground1.98 s after it is released. Find the height of the balcony.
A rocket is launched at an angle of 59° above the horizontal with an initial speed of 97 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 28m/s2.
If the coefficient of friction between the ladder and ground is 0.42, illustrate what is the mass of the heaviest person who can safely ascend to the top of the ladder?
the maxium compresional stress that a bone can with stand is 1.6 * 10^8 N/m^2 before it breaks.What is the maxium compresional force that can be applied to the femur bone
A small block having mass m sits on a uniform disk that has radius R=0.5m. What is the initial angular velocity of the disk
A uranium and iron atom reside a distance R = 54.70 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized. find the magnitude of the force on the electron from the uranium ion
An archer shoots an arrow horizontally at a target 12 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow.
Two boxes, A and B, are connected by a (mass-less) cord and are resting on a smooth (frictionless) table. Find the tension force in the cord connecting the two boxes
A person swimming underwater sees a lifeguard who is standing in the shallow part of the pool; the water comes up to the lifeguard's waist. In what way does the swimmer see lifeguard's upper body distorted.
Another student bumps the field-producing device so that the electric field is now (23.7 N/C)i + (15.5 N/C)k, What is the new electric flux through the hoop
Battery-powered electricity is very expensive compared with that available from a wall receptacle. Estimate the cost per kWh of an alkaline D-cell
For a double-slit experiment with slit spacing 0.2 and wavelength 600, at what angular position is the path difference equal to one-fourth the wavelength.
What is the minimum coefficient of friction between tires and road that will allow cars to take turn without sliding off the road.
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