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Sam jumps horizontally from the top of a building that is 20.0 meter high, and hopes to reach a swimming pool that is at the bottom of the building 10.0 meter horizontally from the edge of the building. If he is to reach the pool, determine what must his jumping speed be?
An iron tower in is 307 meters tall on a cold day (T = -8.3 degrees Celsius). What is its height of the tower on a hot day
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 x104 m/s, and the radius of the orbit is5.05 x 106 m. Asecond satellite also has a circular orbit around this same planet. The orbit of this second satell..
When viewed by an observer on the Earth, light from a distant galaxy is Doppler shifted to the red such that the ratio of the unshifted frequency to the observed frequency is 1.8
A spring with k = 40.0 N/m is at the base of a frictionless 30.0° inclined plane. how far up the incline does it travel before coming to rest and then sliding back down
A series RC circuit, which is made from a battery, a switch, a resistor, and a 3.0-µF capacitor, has a time constant of 9.0 ms. what is the resulting time constant
A person finds the front windshield of him car covered with ice at -10.2 °C. Compute how much heat in joules is needed to melt the ice
the motor in a refrigerator has power p. if the freezing compartment is at temperature tl and the outside air is at
A 90.0- and a 60.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.152 A. When the 60.0- resistor is disconnected, the currentfrom the battery drops to 0.0642 A.
The electron in a hydrogen atom is in the first excited state, What is the quantum number n of the state into which the electron moves
Waves of amplitude 2.4 cm move along a 2-m string that has a mass of 5 g and a tension of 160 N. What is the power transmitted along the string when it vibrates in its fundamental mode? What is the fundamental frequency of the string?
Illustrate what are some pros and cons of the kitchen-sink reporting model? Illustrate what are some pros and cons of the minimalist reporting model? Explain and give examples for both.
An electron traveling north enters a region where the electric field is uniform and points west. The electron:
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