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the thermal energy of 0800 mol of a substance is increased by 0900 j what is the temperature change if the system is a
you are an astronaut m 115 kg and travel to a planet that is the same mass and size as earth this new planet however
a weight is attached to one end of a lightweight spring held at other end when the weight comes to rest the spring is
a helicopter has blades of length 25m extending out from a central hub and rotating at 400 revs if the vertical
a 1500 lb car traveling 80 mph due west is struck by lightening and charged with an enormous negative charge if the
a long straight wire lying along the x-axis carries a constant 5 a current along the positive x direction a small 5mm
the time constant of an rc circuit is 21 s how much time t is required for the capacitor uncharged initially to gain
a 20 kg breadbox on a frictionless incline of angle 33deg is connected by a cord that runs over a pulley to a light
in a heart pacemaker a pulse is delivered to the heart 81 times per minute the capacitor that controls this pulsing
how many time constants a decimal number must elapse before a capacitor in a series rc circuit is charged to 600 of its
explain how you might use the concept of beat frequency to tune a musical instrument using tuning forks would this
a factory worker pushes a 286 kg crate a distance of 49 m along a level floor at constant velocity by pushing downward
two cylindrical bars each with diameter of 240 cm are welded together end-to-end one of the original bars is copper and
the parallel plates in a capacitor with a plate area of 580 cm2 and an air-filled separation of 490 mm are charged by a
ca wire carries a steady current of 240 a a straight section of the wire is 0750 m long and lies along the x-axis
a guitar string destined to be an upper e string has length 9800 cm and mass 0460 ga what is its mass per unit length b
a person wants to push a lamp mass 72 across the floor for which the coefficient of friction is 020 calculate the
a rock is launched from a wall 15 m above a moat at a speed of 29ms at an angle of 36 deg above horizontal how far from
assume that the intensity of solar radiation incident on the cloudtops of the earth is 1340 wm2 calc the total power
a nonconducting spherical shell with an inner radius of 74 cm and an outer radius of 99 cm has charge spread
suppose we have a rocket that has an acceleration of 892 ms2 in the x direction what would the acceleration in the y
a 49 kg cart is placed on a frictionless air track with an angle of 476o a 242 kg mass is attached to the cart using a
if the spring of a jack-in the-box is compressed a distance of 800cm from its relaxed lenght and the released what is
a rectangular block that is 10 m long and 40 kg in weight is resting on top of another longer smaller rectangular block
a coil is formed by winding 280 turns of insulated 14 gauge copper wire diameter 16 mm in a single layer on a