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an earth satellite moves in a circular orbit610 km above the earths surface the period of the motion is 967mina what is
a railroad car with a mass of 50 105-kgcollides with a stationary railroad car of equal massafter the collision the
a 590 kg cheerleader uses an oil-filled hydraulic lift to holdfour 130 kg football players at a height of 120 m if her
a layer of ice has formed on a shallow pond the air just above theice is at -521 degc the water-ice interface is at 0
a certain type of radio antenna is called a quaterwavelength antenna because its length is equal to one quarter of the
an inductor with l 30 mh isconnected in parallel with a capacitor with c 85 microfa if they are connected to an ac
one end of a steel youngs modulus of 20x1011 mm2 rod of radius r95mm and length l81cm is held in a vice a force of
two answers are required for this problema proton is accelerated through apotential difference of 1000 v after leaving
together two students exert a force of 825n in pushing a car a distance of 35 m how much work do the students do on the
a race car has a mass of 706 kg itstarts from rest and travels 420 m in30 s the car is uniformly accelerated during the
a 11 cm long animal tendon was foundto stretch 39 mm by a force of138 n the tendon was approximately roundwith an
water is supplied to an office building 415 m high through a pipe at ground levela find the minimum pressure in the
a tire placed on a balancing machine in a service station startsfrom rest and turns through 55 revs in12 s before
a block mass of 400 kg is pulled 137 m along a frictionless horizontal table by a constant 158 n force direction 43
a physics student is standing on an initially motionlessfrictionless turntable with rotational inertia 031kgmiddotm2
a student librarian lifts a 22-kg book from the floor to a height of 125 m he carries the book 80 m to the stacks and
a bullet having a velocity of 680 ms hits a target 510 m away if the speed of sound is 340 ms how soon after the bullet
a 20-kg rock that is initially at rest loses 407-j of potential energy while falling to the ground calculate the
1 of the following gases the most abundant in theatmosphere isa oxygenb nitrogenc carbon dioxided argon2 weather
a simple pendulum is 900 m longa what is the period of simple harmonicmotion for this pendulum if it is located in an
a 100-kg rocket is fired vertically from cape canaveral its fuel gives it 1960-j of kinetic energy by the time the
the total cross-sectional area of the load-bearing calcifiedportion of the two forearm bones radius and ulna is
a boy throws a stone horizontally at a speed of 220 ms from the top of a building of height 640 mnbsp what is the
in a volcanic eruption a 2400-kg boulder is thrown vertically upward into the air at its highest point it suddenly
a source of sound having a frequency of 330 hz is moving at 25ms if the speed of sound in air is 340 ms what is the