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Imagine two 1.5 bags of protons, one at the earth's north pole and the other at the south pole.
A. Calculate the gravitational attraction that each bag exerts on the other.
B. Calculate the the electrical repulsion that each bag exerts on the other.
C. Is the gravitational force in part A large enough for you to feel if you were holding one of the bags?
D. Is the electrical force in part B large enough for you to feel if you were holding one of the bags?
A ball is thrown toward a cliff of height h with a speed of 29m/s and an angle of 60? ^\circ above horizontal. It lands on the edge of the cliff 3.5s later. How high is the cliff
A copper wire has a resistance of 0.400 at 20.0°C, and an iron wire has a resistance of 0.430 at the same temperature
A wheel initially rotating at an angular speed of 2.4 rad/s turns through 30 revolutions during the time, How long did the acceleration last
The voltage across a resistor is equal to the product of the current through the resistor and the resistance of the resistor, What is the potential difference of the battery
The half-life of iodine-131, an isotope used in the treatment of thyroid disorders, is 8.04 days. what is the activity of the sample
A wave has the following properties: amplitude = 0.37 m, period = 68 s, wave speed = 13 m/s. What is the mathematical expression (similar to one of the following equations) for the wave
Assume that the blocks accelerate as shown with an acceleration of magnitude a= 0.550 m/s^2 and that the coefficient of kinetic friction between block 2 and the plane is μ= 0.400. Find out the mass of block 2, m2, when θ= 30.0.
The rod is initially at rest and oriented horizontally and then released so that it swings to the bottom. Illustrate what are all the forces acting on the rod?
An oxygen molecule has a vibrational mode that behaves approximately like a simple harmonic oscillator with frequency 2.99 X 10^14 rad/s. Calculate the energy of the ground state
Three resistors of 40 ohms, 60 ohms and 100 ohms connected on a close circuit with 200 Volt source (assume ideal circuit). With Resistors connected in Parallel: determine the voltage drop across each resistor
A 35.1 kg girl and a 58.4 kg boy are on the surface of a frozen lake, 14.5 m apart. Calculate the magnitude of the girl's acceleration
Starting from rest, a 12-cm-diameter compact disk takes 2.5s to reach its operating angular velocity of 1500rpm. How much torque is applied to the disk
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