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A vertical straight wire carrying an upward 40-A current exerts an attractive force per unit length of 8.8*10-4 N/m on a second parallel wire 5.0cm away. What current (direction and magnitude) flows in the second wire?
One kilogram of water vapor (as an ideal gas) is filled in a frictionless piston-cylinder assembly. The piston can move freely in the cylinder and it is in surroundings of 1 atm. Determine the heat transfer for the process
A lid is put on a box that is 14 cm long, 13 cm wide, and 8.0 cm tall and the box is then evacuated until its inner pressure is 7.3 104 Pa. How much force is required to lift the lid at sea level
a 27.2 g arrow is fired with a velocity of 87.3 m/s from a bow with a mass of 2.45 kg. Find the impulse on the arrow
A computer to be used in a satellite must be able to withstandaccelerations of up to 23 times theacceleration due to gravity. What is the minimum amplitude of vibration
A battery with a 12-V EMF has a terminal voltage of 11.4 V when it delivers 20A to the starter of a car. How much energy is dissipated per unit time by internal resistor
Now consider an atom consisting of two electrons, each of charge -e, embedded in a sphere of charge +2e and radius R. In equilibrium, each electron is a distance d from the center of the atom (the figure (Figure 1) ). Find the distance d in terms of ..
A 1650-kg car is travelling at 31.2 m/s. How fast must a 91.0-kg bicycle and rider be travelling to have the similar kinetic energy as the car.
A small 10.0-g bug stands at one end of a thin uniform bar that is initially at rest on a smooth horizontal table. what is the angular speed of of the bar just after the frisky insect leaps
High-speed stroboscopic photographs show that the head of a 280-g golf club is travelling at 58 m/s just before it strikes a 46-g golf ball at rest on a tee. After the impact, the club head travels (in the similar direction) at 52-m/s. determine t..
An atom in a metastable state has a lifetime of 6.20 ms. What is the uncertainty in energy of the metastable state
A cylinder contains a piston on each side of which is one kilomole of an ideal gas. The walls of the cylinder are diathermal, What is the change in the Helmholtz potential
Consider two concentric thin wall steel tubes, the larger one closed at the bottom and the inner one open. What must be the relationship between the radii of the tubes
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