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To reach the center of teh gym ceiling, a 500N student tightroper walks to the center of a rope strung above the gym. If the rope can withstand a tension of 1800N without breaking, what is the minimum angle the rope can make with the horizontal?
A hydrogen atom, initially at rest, emits an ultraviolet photon with a wavelength of \lambda = 122nm. What is the recoil speed of the atom after emitting the photon
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 479 m/s. What is the temperature (in Kelvin) of the environment
A polonium nucleus, while at rest, decays into a lead nucleus of rest mass 342.1126 x 10^-27 kg, and emits a helium nucleus of rest mass 6.6483 x 10^-27 kg. Determine the rest mass of the Polonium nucleus
A woman at an airport is towing her 23.5-kg suitcase at constant speed by pulling on a strap at an angle ? above the horizontal. What is the magnitude of the normal force that the ground exerts on the suitcase
A car is traveling with a constant velocity when the driver suddenly applies the brakes, giving the car a deceleration of 3.50 m/s2, what was the magnitude of the car's original velocity
consider two point particles that have charge e are at rest and are separated by 3.70 x 10-15 m.a how much work was
Identical point charges of +2.4 ?C are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, Find the sign and magnitude of the third charge
A spring is hanging from the ceiling. Attaching a 560 g mass to the spring causes it to stretch 22.0 cm in order to come to equilibrium. At what position or positions does it have this speed
A singly charged ion of 7Li (an isotope of lithium) has a mass of 1.16×10?26kg. What is the radius of the ion's path in the magnetic field
An electron and a anti-electron (Positron) circle eachother at a distance of 1.00x10^-19m. What is the electrostatic force between the particles
q1. two alpha particles helium nuclei each consisting of two protons and two neutrons have the3 electrical potential
a 3.0-kg object hangs at one end of a rope that is attached to a support on a railroad car. when the car accelerates to
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