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A 2.05 g ping-pong ball rubbed against a wool jacket acquires a net positive charge of 1.26 ?C. How many electrons were removed from the ping-pong ball?
What is the tension in each cable if angle between each and the direction the crate moves is 12°.
A hair dryer operate at 1800 watts along with a 240 watt power resistor connected in a series. Utilizing a 120 volt source, determine the current I and resistance R of the hair dryer
How does the frequency of harmonic motion change if we take a spring of seven times the modulus, increases or decreases by a factor of how much
suppose you have a heat engine operating between 230 C and 100.0 c. it achieves 20.0% of the maximum possible efficiency(carnot Efficiency). what energy input will enable the engine to perform 12.0 kJ of work?
A 1290kg car and 4860kg truck undergo a perfectly inelastic collision. Before the collision, the car was traveling southward at 1.80m/s, Find the velocity of the wreckage immediately after the collision
A current of 18.0 mA is maintained in a single circular loop of 3.70 m circumference. Calculate the magnetic moment of the loop.
If the car is now at rest and the pendulum undergoes S.H.M. would its time be shorter of longer than that calculated in (b) explain your answer.
Two crewmen pull a boat through a lock. One crewman pulls with a force of F1 = 130 N at an angle of = 37° relative to the forward direction of the raft.
Calculate the amount of work (in electron-volts) it would take to move an electron from 11.6 to 13.4 away from a +3.50 point charge.
A simple pendulum consists of a bob of mass 1.8kg attached to a string of length of 2.5m. The pendulum is held at an angle of 30 degrees from the vertical by the light horizontal string attached to a wall.
A spherical balloon of volume 4.03 x10^3 cm3 contains helium at the pressure of 1.15 x10^5 Pa. How various moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x10-22 J.
What is the mass of the liquid in the vat.
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