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Question1
The starter motor of a car engine draws a current of 126 A from the battery. The copper wire to the motor is 6 mm in diameter and 1.18 m long. The starter motor runs for 0.64 s until the car engine starts. How much charge passes during the starter motor?
Question2
Joey has a ring weighing 20 grams made of an alloy of 20 silver and the rest gold. He decides to melt down rings and include enough silver to reduce the gold content to 74. How many grams of silver must he include?
An athlete performing a long jump leaves the ground at a 34.4? angle and lands 7.65m away, What was the takeoff speed
If the Young's Modulus of the material is made from is 310 MN/m^2 what is the effective spring constant of the cord for stresses and strains where Young's Modulus is valid
A marble is thrown horizontally with a speed of 19.0 m/s from the top of building. When it strikes the ground, marble has a velocity that makes an angle 75° with the horizontal. From what height above the ground was the marble thrown.
Antimony (atomic number 51) is composed of two principal isotopes, antimony-121, which has a mass of 120.904 atomic mass units, What is the atomic mass of natural antimony?
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.8 m/s at ground level. What is its maximum altitude
Calculate charges, current, potential difference.
Find the mechanical energy of a block- spring system having a spring constant of 1.3 N/cm and an oscillation amplitude of 2.4 cm
a typical maximum acceleration for a car is about 8 m/s^2, A sports car traveling at 20m/s accelerates at this rate for 1.25 seconds
Consider a theoretical head-on collision between two carts of equal mass and equal speed. What is the total momentum after the collision
State and explain magnetic dipole moment µ of a coil of number of turns N and area A carrying current i
A ladder 6.10 m long leans against the side of a building. If the ladder is inclined at an angle of 76° to the horizontal, what is the horizontal distance from the bottom of ladder to the building.
From what height will you have to drop the rock on Earth so that the fall-time on both planets is the same.
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