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An atom by a single electron (i.e. a hydrogen-like atom) has anatomic number Z = 3. What is the principal quantum number of the state in which the electron has the similar total energy as aground state electron has in the hydrogen atom?
A 2 kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of the net force acting on the ball while it is traveling upward?
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
A graph depicts force versus position. What represents the work done by the force over the given displacement?
One rechargeable battery of mass 15.0 g delivers an average current of 18.0 mA to a compact disc player at 1.60 V for 2.40 h before the battery needs to be recharged. The recharger maintains a potential difference of 2.22 V across the battery and ..
A 775-g object undergoes an acceleration given by = (2.00 ? + 5.00 ?) m/s , find the resultant force acting on the object
An electric heater carries a current of 16.5 A when operating at a voltage of 1.50 102 V. What is the resistance of the heater
When an uncharged parallel-plate capacitor is connected to a 50.0V battery, it is noticed that 22.0 microColumbs of charge flowed out from the + terminal of the battery, What is the value of the capacitance, in Micro Farads
Approximately which fringe number has a peak intesnity that is 1/2 percent of the central fringe intensity
Assume that a planet was reported to be orbiting the sun-like star Iota Horologii with a period of 300 days. Determine the radius of the planet's orbit
A 12 g bullet is fired horizontally into a 96 g wooden block initially at rest on a horizontal surface. estimate the speed of the bullet
A 0.650 kg ice puck, moving west with a speed of 5.0 m per second, what will be the speed and direction of each puck after the collision
A 1000kg car is moving at a constant speed of 7 m/s when it hits the back bumper of another car with 1200kg of mass moving in the same direction at a constant speed of 6m/s
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