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For Amanda's trip to Chicago, she boarded a train in Omaha and rode 805 km to Chicago. On returning, she took the same train and route back to Omaha. What distance did she travel? (1610km, 2415km, 805km)
Two very small spheres are initially neutral and separated by a distance of 0.60 m. What is the magnitude of the electrostatic force that acts on each sphere
A conical pendulum consists of a tiny bob of mass m swinging at constant speed v. Find an expression for the observed radius r in terms of v and g ?
On the fireground the food energy expended to raise a ladder is balanced by the mechanical movement of the ladder and the firefighter pulling the halyard rope, minus the energy needed to overcome wind resistance, imperfect pulley, and ladder pawls..
Find the minimum frequency a photon must have if it is to ionize the n = 1 state of a doubly ionized lithium atom
During Apollo 14, Alan Shepherd hit a golf ball on the Moon. If he hit the ball at an angle of 15° and an initial velocity of 30m/s, how far did the ball go
You create a plot of T2 (in s2) vs. L (in m) and the linear fit of your graph gives a slope of 3.7484 ± 0.0069. What is the value of the local gravitational constant, g?
A uniform meter stick with a mass of 140 g is supported horizontally by two vertical strings, one at the 0-cm mark and the other at the 90-cm mark. What is the tension in the string at 0 cm?
A uniform rod of mass 4.2 kg and a length of 1.0 m is hinged to a wall at the left end and held in a horizontal position by a taut string. find the resulting angular acceleration of the rod
Two identical containers are adjacent to each other. They both have Volume =3.5 L and Pressure = 1atm. One contains O2, a diatomic gas, (molar mass 32g/mol) at initial temperature 250K.
How many subjects were assigned to each of the treatments, and was randomization used? Was it a double-blind experiment? What were the conclusions, and were the results statistically significant?
A 2.0-m-long, 22-kg ladder is resting against a house wall, making a 32 angle with the vertical wall. The coefficient of static friction between the top of the ladder and the wall the coefficient is 0.00. Determine the minimal coefficient of stati..
A Rubber ball mass m movie at a speed of 1.0 m/s in the positive x direction hits another rubber ball of a mass 2m at rest. what are the speeds and directions of the two balls moving afterwards
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