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In an electricity experiment, a 0.800g plastic ball is suspended on a 51.0cm long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F? elec on it, causing the ball to swing out to a 22.0? angle and remain there. what is the initial force of the electrical current? what is the tension of the string?
A 200 g block is pressed against a spring of force constant 1.40 kN/m until the block compresses the spring 10 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal.
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
A 11.0g bullet is fired horizontally into a 103g wooden block that is firstly at rest on a frictionless horizontal surface and connected to a spring of constant 154N/m. The bullet becomes embedded in block. If the bullet-block system compresses the s..
Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay.
Three resistors are connected in series across a battery, What is the greatest voltage that the battery can have without one of the resistors burning up
There is a uniform electric field on both sides of a large plane. Its magnitude is 80 N/C and its direction is toward the plane, on each side of it
A Norwich MCE student is involved in a crucial out of class experiment. He is in his dorm room 34 feet above an historic rock wall. Describe the final result and state any assumptions that you need to make. Would the final result be any different o..
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift.
Introductory Mechanics: Calculate the smallest coefficient of static friction
Torque can be calculated by multiplying the force (N) applied at 90 degrees to the lever arm at a distance (m) from the pivot point (point of rotation), the compound SI unit for the torque is N*m. If the force (at 90 degrees to the lever arm) appl..
What is the repulsive force between two pith balls that are 12.0 cm apart and have equal charges of -26.0 nC?
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