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Question1
heather and mathew walk eastward with a speed of 0.76 m/s east. If it takes them 50 minutes to walk to a store, how far have they walked? Reply in units of km
Question2
A central particle of charge q is surrounded by two circular rings of charged particles. What are magnitude and direction of the net electrostatic force on the central particle because of the other particles?
Question3
A cannonball fired from a gun located 20 m away from a castle rises high into the air in a smooth arc and sails down, crashing into the wall 60 m up from the ground. Establish the projectile's displacement.
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. Find the volume of the cylinder. Calculate the probable percent error in the length. Calculate the probable percent error..
A certain automobile engine is performing work at the rate of 28300 W (38 hp) with an efficiency of 23%. At what rate is heat being expelled by the engine
What is the electric potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)" Use = 8.85 10 12 for the permittivity of free space.
In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2eV . When the wavelength of the light is increased by 50% , What is the work function of the cathode
two uniformly charged insulating rods are bent in a semi circle shape with radius R=12cm. find direction of the elctric field at the center of the circle
A bowling ball is rolled off a flat top building w/ an initial speed of 5.8m/s. It lands 24.2 meters from base of the building. how tall is the building
An L-R-C series circuit has 97.5%u03A9 , and the amplitude of the voltage across the resistor is 30.0VV . What is the average power delivered by the source
Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8305decays per minute, What is the half-life T1/2 of this isotope
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
What are the next two harmonic frequencies above the fundamental frequency that would create resonance in the same tube. What length tubes (also closed at one end) would have as their fundamental frequencies.
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 55.0 m/s, What work does the racquet do on the ball
An electric potential is set up across a pair of parallel plates such that the left plate is at -594 V, What is the kinetic energy of the electron when it reaches the hole in the right plate
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