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Assume you wish to make a solenoid whose self-inductance is 3.0 mH. The inductor is to have across sectional area of 1.20 x 10-3 m2 and a length of 0.053 meter. Determine how many turns of wire are needed?
Gold has a molar mass of 197 g/mol. How many moles of gold are in a 9.09 g sample of pure gold, How many atoms are in the sample
An asteroid hits the Moon and ejects a large rock from its surface. The rock has enough speed to ravel to a point between the Earth and the Moon where the gravitational forces on it from the Earth and the Moon are equal in magnitude and opposite i..
You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 25.7N. What is the sample's specific heat
the drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right
A Carnot engine whose cold reservoir temperature is 1.0 C has a thermal efficiency of 40%. By how much should the temperature of the hot reservoir be increased to raise the efficiency to 60%?
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
A 0.75 kg ball attached to the end of a horizontal cord, is rotated in a circle of radius 1.9 m on a frictionless horizontal surface, What is the max speed the ball can have
a 10-turn square coil 0.50 m on a side lies in the xy-plane. a uniform magnetic field with magnitude 1.0 t in the
a long solenoid with 15 turns per cm has a small loop of area 2.0 cm2 placed inside the solenoid normal to its axis. if
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. The lens has equal radii of 76 cm and the refractive index is n = 1.4. (a) What is the distance d from image to screen? (b) What is the total ..
The first stage of a space vehicle consumed fuel and oxidizerat the rate of 1.70 104kg/s, with an exhaust speed of 2.85103 m/s. Calculate the thrust produced by these engines
A spherical hot air baloon is initially filled with air at 118 kPa and 18°C and has an initial diameter of 4 m. What is the rate of change of the balloon's diameter when it reaches the inflated diameter
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