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A model rocket fired vertically from the ground ascends with a vertical acceleration of 3.2 m/s2 for 5.2 s. Its fuel is then exhausted, so it continues upward as a free-fall particle and then falls back down.
(a) What is the maximum altitude reached?
m
(b) What is the total time elapsed from takeoff until the rocket strikes the ground?
s
A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.8 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other word..
A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa, What is the molecular mass of this gas
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A 9.40kg projectile is fired vertically upward. Air drag decreases the mechanical energy of the projectile-Earth system by 69.5kJ throughout the projectile's ascent. How much higher would the projectile have gone were air drag negligible.
An RLC circuit shown above with a peak voltage of 240 V, f = 60 Hz, R = 100 Kilo Ohms, L = 0.5 mH, C = 200 micro Farad. What is the (linear) resonant frequency of the circuit
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Two long, parallel wires are separated by a distance of 2.50cm . The force per unit length that each wire exerts on the other is 3.20×10?5N/m, determine the current in the second wire
Two large parallel plates stand side by side with a distance of 2.10 cm between them, Find the acceleration of the electron, Find the magnitude and direction of the electric field in the region between the plates
An aluminum wire having a cross-sectional area equal to 2.70 10-6 m2 carries a current of 6.50 A. The density of aluminum is 2.70 g/cm3. calculate the drift speed of the electrons in the wire
A hotel elevator ascends 170m with a maximum speed of 4.4m/s. Its acceleration and deceleration both have a magnitude of 1m/s2.
Assume you wish to send a 200 bytes long message from your equipment to a friend's machine via four intermediate nodes. You are needed to use a header size of 5 bytes per packet.
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