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What is the total charge of all the electrons in 18 kg bar of molybdenum? (Molybdenum has 42 electrons per atom and an atomic mass of 96 u.)
What is the net charge of the bar?
What is the net charge of the bar if it managed to obtain rid of 7% of the electrons?
A ball is dropped out of a window near the top of a building. If the ball accelerates toward the ground at a rate of 9.8 , what is its velocity when it has fallen 4.00m
An extreme skier, starting from rest, coasts down a mountain that makes an angle 25.0 degree with the horizontal. Evaluate how fast is she going just before she lands
Next you eliminate the 11 kg mass, place the rod horizontally, and strike one end with a hammer. How much time t would elapse before a microphone at the other end of the bar will detect a disturbance.
A 5 kg toy race car can move along an x axis. It gives Fx of the force acting on the car, that begins at rest at time t = 0. (The vertical axis is marked in increments of 2.5 N.) what is the momentum at t=6?
if you have two 10 microfarad capacitors in series with each other what is the equivalent capacitance of the
a 0.40kg ball is suspended from a spring with spring constant 12 N/m. what is its maximum speed while it oscillates
A 47.60 g golf ball is driven from the tee with an initial speed of 56.0 m/s and rises to a height of 28.4 m. (a) avoid air resistance and determines the kinetic energy of ball at its highest point. (b) What is its speed while it is 8.02m below it..
A balloon carrying a basket is descending at a constant velocity of20.0 {\rm m}/{\rm s}. A person in thebasket throws a stone with an initial velocity of 15.0 {\rm m}/{\rm s} horizontally perpendicular to the path of the descending balloon,
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. When the plane's altitude is 533 m, the pilot releases a package.
A vacuum cleaner is plugged into a 120.0-V socket and uses 4.4 A ofcurrent in normal operation when the back emf generated by the electric motor is 77.8 V. Find the coil resistance of the motor.
A car with 60 cm diameter tires is traveling at a constant speed of 100 km/hr. What is the angular velocity of the tires in rad/s
the sound intensity 59 m from a wailing tornado siren is 0.11 wm2. a what is the intensity at 1190 m? b the weakest
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