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When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 948 N and the drag force has a magnitude of 1045 N. The mass of the sky diver is 96.7 kg. Take upward to be the positive direction. What is his acceleration, including sign?
If light is measured traveling through some medium at 0.90c, where c represents the speed of light in a vacuum, what is the index of refraction of the medium
A marble is thrown horizontally with a speed of 13 m/s from the top of a building. From what height above the ground was the marble thrown
An AC generator supplies an rms voltage of 240 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.90 ?F capacitor and a 316 ? resistor, What is the rms current through the resistor
A circular conducting loop with a radius of 0.30 m and a small gap filled with a 10.0 ohm resistor is oriented in the xy-plane. what is the magnitude of the current that will be caused to flow in the conductor
A positive charge, Q = 45 is placed on the x-axis at x = -1.9 cm. A positive charge which is twice as large is brought from infinity to a point x = +1.9 cm on the x-axis. what would be the speed of the 2*(45) charge at infinity
An inductor (L = 350 mH), a capacitor (C = 4.43 µF), and a resistor (R = 570 ) are connected in series. A 50.0 Hz AC generator produces a peak current of 250 mA in the circuit. Calculate the required peak voltage ?Vmax
A plane is flying with an airspeed of 266 miles per hour with heading 272.7 deg the wind currents are running at a constant 45.7 miles per hour in the direction 238.6 deg
q1. throughout a hard sneeze your eyes may shut for 0.41 s. if you are driving a car at 98 kmh during such a sneeze how
A uniform meter stick is at rotational equilibrium when a mass 200 g is suspended at the 5 cm mark, a mass of 150 g is suspended at the 80 cm mark and the support is placed at the 40 cm mark. What is the mass of the meter ?
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.47 Earth years in its circular orbit around its sun, Find the radius of the exoplanet's orbit
A pressure of 10 Pa is applied through a piston uniformly on the surface of water in a cylinder. How much of this pressure if it is 80 cm deep?
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