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While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 meter north, 265 meter east, 190 meter at an angle 30.0 degree north of east, and 150 meter south. Calculate the resultant displacement from the cave entrance. m at ° north of east
Three equal positive charges Q are each fixed at a corner of an equiliateral triangle of side length a, Draw a diagram showing the individual electric field vectors due to each charge at the triangle's center
A rubber ball is dropped from rest 3.3m onto level ground. Bouncing back the ball loses 25% of its mechanical energy. To what height does it rebound
question a 67.5 kg person sits on a 3.77 kg chair. each leg of the chair makes contact with the floor in a circle that
a series rc circuit has a time constant of 0.960 s. the battery has an emf of 48.0 v and the maximum current in the
A block of mass 1.80 kg is pushed 2.90 m along a frictionless horizontal table by a constant 16.0 N force directed 27.0° below the horizontal.
A subway train has a sound intensity level of 90 dB, and a boiler shop has a sound intensity level of 100 dB. How many times greater is the new sound intensity of the shop than that of the train?
A step up transformer is used on a 110 Volt line and supplies a load with 2.0 A. Calculate the secondary voltage, the primary current, and the power output
A 1.0-kg block of ice is initially at 0°C. Heat is added to this system, and the entropy is increased by 357.1 J/K. How much of the ice melts
A beam of electrons is accelerated from rest and then passes through a pair of identical thin slits that are 2 nm apart. Calculate the speed of the electrons
A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. what is the bicyclist's speed at the bottom of the hill
How to find out the force of friction
A 6.70-µC particle moves through a region of space where an electric field of magnitude 1250 N/C points in the positive x direction, find the magnitude and direction of the particle's velocity
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