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A solenoid 1.45 m long and3.10 cm in diameter carries a currentof 21.0 A. The magnetic field insidethe solenoid is 17.0 mT. Find the length of the wire forming the solenoid.
A puck (mass m1 = 1.30 kg) slides on a frictionless table as shown in the figure below. The puck is tied to a string that runs through a hole in the table and is attached to a mass m2 = 3.9 kg. What is the change in the kinetic energy of the puck
A box of 300N weight is at rest at the bottom of the plank that is 5.00m long and rises 30 degrees above ground. find the velocity of the box at the top of the plank
Two different simple harmonic oscillators have the same natural frequency (f=2.60 Hz) when they are on the surface of the Earth. what is the new frequency of the pendulum
A 50.4-g golf ball is driven from the tee with an initial speed of 40.9 m/s and rises to a height of 25.7 m. determine the kinetic energy of the ball at its highest point
A 40 g bullet traveling 500 m/s penetrated 5 cm into a tree trunk. what was the retarding force on the bullet
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find out the minimum angle at which the box starts to sl..
Consider a copper wire (mass density 8.9 g/cc, resistivity 1.7E-8 ohm-m) with a diameter of 0.43 mm, How many meters long is this wire
You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. Explain how much force must you exert to keep the pole motionless in a horizontal position?
A hanging copper wire with diameter 1.4mm (1.4e-3m) is initially 0.95 m long. Find the approximate value of the effective spring stiffness of the inter atomic force
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20^circ {rm C}? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
A piece of aluminum with a mass of 1kg and density of 2700 kg/m^3 is suspended from a string and then completely immersed in a container of water. Determine the volume of the aluminum
Light is reflected from a glass coffee table. When the angle of incidence is 50.0°, What is the index of refraction of the glass
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