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An explorer is caught in a whiteout (in which the snowfall is thus thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 4.2 km, but when the snow clears, he discovers that he actually traveled 7.8 km at 48 degree north of due east.
(a) Find how far must he now travel to reach base camp?
km
(b) Find in what direction must he travel?
° (counterclockwise from due east)
A 1037 kg satellite orbits the Earth at a constant altitude of 108 km. How much energy must be added to the system to move the satellite
A government agency estimated that air bags have saved over 14,000 lives as of April 2004 in the United States. What is the magnitude of the person's impulse
Objects A and B have the equal mass of 3.4 kilogram and are at their melting point, Find the latent heat of fusion for the substance from which each object is made
A gas is contained in a closed cylinder with a mobile piston at oneof its ends. For the following conditions indicate: (1) if dW= -pdV or not, and (2) if the process is reversible, quasistatic,or irreversible. Explain in each case why is one or an..
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.46 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.2° with the horizontal. The coefficient of kinetic friction is 0.400, and the crat..
Two rods of equal length (0.55m) and diameter (1.7cm) are placed end to end. One rod is aluminum, the other is brass. how much does their combined length decrease
a particle with a mass of 3 mg and a charge of q is moving at a speed of 1300 ms along a horizontal path 14 cm below
A shower head has 30 circular openings, each with radius 1.0 mm. The shower head is connected to a pipe with radius 0.80 cm. If the speed of water in the pipe is 2.2 m/s, what is its speed as it exits the shower-head openings?
Calculate the work done by 10 moles of an ideal gas in each step of the cycle below. The gas is initially in state A with pressurePA = 6 × 104 Pa and volume VA = 0.15 m3. It expands isobarically to state B with volume VB = 0.30 m3.
an object is thrown upward with a speed of 12 ms on the surface of planet x where the acceleration due to gravity is
A small piece of dust of mass m = 1.50g travels horizontally through an electric air cleaner in which the electric field is 498N/C. The electric force on the particle is equal to weight of the particle.
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