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An infant's pulse rate is measured to be 156 ± 4 beats per minute. What is the percent uncertainty in this measurement? (Note that percent uncertainties should be reported to two significant figures.)
Two point charges .03 m apart have an electric potential energy -90 microjoules . The total charge is 20 nanoCoulombs. What is the lesser charge
Suppose atmospheric pressure at Denver is 1.0135 × 105 N/m2 today. How high will the water column stand on the barometer tube
A cyclotron accelerates two protons directly toward each other, each with a speed of 950 km/s , measured relative tothe earth. Find the maximum electric force in N that these protonswill exert on each other.
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths
A 3.50 gram bullet is fired horizontally at two blocks resting on a smooth surface. Evaluate what is the initial speed of the bullet
A solid cylinder of radius 0 cm and mass 9 kg starts from rest and rolls without slipping down a 32° incline that is 9 m long. What is its translational speed when it reaches the bottom? What is its rotational speed when it reaches the bottom?
What is the electric potential in this case?
An electron jumps from the 4th orbit into 3rd orbit of 3Li7. Determine the radii of both orbits and Find the energies of both orbits
a 190 pf capacitor and a 760 pf capacitor are both charged to 2.4 kv. they are then disconnected from the voltage
Suppose an electric eel touches the head and tail of a long, approximately cylindrically shaped fish and applies a voltage of 600V across it. estimate the overall resistance of the fish
A cannon fires a cannonball from the top of a wall at a speed of 91.05 m/s and an angle of 31.18 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
Find the speed of mass m1 before the collision. Find the speed of mass m1 and m2 after the collision. Find the relative change of kinetic energy during the collision (DK/Ki).
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