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1. Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.?
2. Imagine adding electrons to the pin until the negative charge has the very large value 3.00 mC. How many electrons are added for every 109 electrons already present?
A 626-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. Find the gravitational force acting on it
A hill sled moves from the top of a hill at 1m/s. What is the speed of the sled at the bottom of the hill
An air puck of mass m1 = 0.30 kg is tied to a string and allowed to revolve in a circle of radius R = 1.0 m on a frictionless horizontal table. The other end of the string passes by a hole in the center of the table, and a mass m2 = 1.20 kg is att..
A microscope has a 2.5-cm focal length eyepiece and a 0.90 cm objective. Assuming a relaxed normal eye. Compute the total magnification. Compute the position of the object if the distance between the lenses is 20.5cm.
A bullet with a mass of 4.95 g and a speed of 940 m/s penetrates a tree horizontally to a depth of 6.15 cm. Calculate the magnitude of this frictional force
Discover the electric force on a point charge Q1 at any point P along the x axis due to a thin charged needle of length L given that the charge distribution is \lambda = a(l-L)^3 where l is the length of the segment and L is the total length of the r..
A pendulum has a length of 1.75 m. At a location where the acceleration due to gravity is 9.8 m/s2, what is the frequency of the oscillation? How long would the pendulum have to be so that the frequency would be half of the value found in part a?
point a is at position 4j -3kcm. point b is at position -3cm k. point c is at position 3i -2j 5k cm. point d is at
A 1 165.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 100.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the..
The hydrogen alpha emission spectra has a 658.28 nanometer wavelength. What is the red-shifted wavelength of hydrogen alpha light from the bootes galaxy cluster
Jone pulls her brother on a sled over a horizontal surface with force of 80N. The force is at an angle of 25 degree, determine the acceleration of the sled
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
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