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The air inside a bicycle tire pump has 194 joules of work done on it as 97.9 joules of heat are added to it. What is the change in internal energy of the air?
A 200 g ball is thrown upwards with an initial kinetic energy of 10 Joules. What maximum height will the ball reach? (Neglect air resistance).
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
What is magnitude of the force that a concrete support exerts on the bridge at each end. The cloth exerts a friction force of 0.100 N on the mug and the cloth is pulled with a constant acceleration of 3.00 m/s.
Three equal point charges, each with charge 1.50, are placed at the vertices of an equilateral triangle whose sides are of length 0.550. What is the electric potential energy of the system? (Take as zero the potential energy of the three charges w..
A conductive loop of radius r = 1.0 cm falls towards a stationary solenoid of 100 turns per cm carrying a current of I = 2.00 A. What is the direction of the current induced in the loop
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
An automobile of mass 1420 kilogram traveling at 20 m/s is at the foot of a hill that rises 120 meter in 2 kilometer. Obtain the average power delivered by the automobile engine
A woman at an airport is towing her 20.5 kg suitcase at constant speed by pulling on a strap at an angle of ? above the horizontal. What angle does the strap make with the horizontal
A pulley of radius 20cm and moment of inertia is suspended from a ceiling and has a long string of negligible mass wound around it. A ball of mass 1kg is connected to the string and released from rest from a height of 2m above the floor. Calculate th..
A solenoid with a cross-sectional area of 1.79 x 103 m2 is 0.745 meter long and has 480 turns per meter. Find the magnitude of induced emf in this solenoid if the current in it is increased from 0 to 2.10 A in 41.5 milliseconds
In the velocity selector the electric field has a magnitude of 8428 V/m, and the magnitude of the magnetic field in both the velocity selector and the deflection chamber is 0.0941 T. If in the deflection chamber the ion is detected at a distance o..
A coin is placed 14.7 cm from the axis of a rotating turntable. The coefficent of static friction between the coin and the turntable is .51. What is the speed (in RPM) of the turntable when the coin falls off
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