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a sensitive gravimeter at a mountain observatory finds that free-fall acceleration is 50 x 10-3 ms2 less than that at
two 720 kilogram hockey players skating at 575 ms collide and stick together if the angle between their initial
a cycle wheel rotates uniformly through 20 revolutions in 40 second find what is the frequency of the wheels
a rigid body is rotating around the vertical z axis anticlockwise when look at from above it angular velocity decreases
a crate sits on a flat-bed truck that is traveling with a speed of 50 kmh on a straight level road if the coefficient
during open-heart surgery a small current of 25 mua may cause ventricular fibrillation suppose the heart resistance to
a town needs about 20 megawatts of power and the transmission station is 10 kilometer away the wires carrying the
given a hollow conducting sphere of radius r and surface charge density sigmaa find the potential at a distance greater
assume you mount your sound equipment from above on your car if you are travelling along the road at a constant speed
sam and his father ride a motorbike in order to throw a bomb up and through a hole on the top of a dome the bomb goes
frequency of 220 hertz is used to measure the speed of passing cars when at rest by the side of the road an approaching
an atomic nucleus initially moving at 420 ms emits an alpha particle in the direction of its velocity and the remaining
a 350 gram bullet is fired horizontally at two blocks resting on a smooth surface the bullet passes through the first
a 3800 kilogram open railroad car coasts along with a constant speed of 860 ms on a level track snow begins to fall
a spring with a force constant of 30 times 104 nm is initially at its equilibrium lengthfind how much work must you do
the total momentum of a closed system is observed to be 532 kgbullms east the system consists of 13 objects that are
a roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r a traveler feels the
an arrow is fired with a speed of 170 ms at a block of styrofoam resting on a flat surface the arrow penetrates a
the tub of a washer goes into its spin-dry cycle starting from rest and reaching an angular speed of 30 revs in 130
the tires on a new compact van have a diameter of 20 feet and are warranted for 58000 milesa find the angle through
a train started from rest and moved with constant acceleration at one time it was move traveling at 330 ms and 160
a 210 kilogram child on a 300 meter long swing is released from rest when the ropes of the swing make an angle of 260
a 675 kilogram elevator starts from rest and moves upward for 340 second with constant acceleration until it reaches
a 780 gram bullet moving at 540 ms penetrates a tree trunk to a depth of 64 centimetera use work and energy
a cart loaded with bricks has a total mass of 18 kilogram and is pulled at constant speed by a rope the rope is