Determining the spring constant problem
A 1000 kg safe is held 2 m above a heavy duty spring when the rope holding it breaks. The safe compresses the spring 50 cm. What is the spring constant?
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A motorcycle has a constant acceleration of 2.74 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a) 26.1 to 36.1 m/s, and (b) 56.1 to 66
A steel rod is used to transfer heat from a chamber at 300 K to a chamber at 250 K. Which of the following changes in the setup will result in the greatest increase in the rate of heat transfer?
A 42 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kj/kg?
A circuit with C1=6*10^-6F, C2+3*10^-6, and potential difference=20V. Capacitor C1 is first charged by closing switch S1, Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor by closing Scalculate the final c
The final pressure is 1 bar. Determine the final temperature and volume if the exergy destruction is 15 kJ. Is the ammonia before or after this process an ideal gas? Give your answers and your reasoning.
A sperical conductor has a total charge +Q, and radius R. 1) what is the shape of equipotential surfaces outside the conductor? 2) What is the shape of the equipotential surfaces inside the conductor?
The beam's length is 1.30 m and the sign's dimensions are 1.00 m horizontally 0.80 m vertically. What is the minimum angle that you can have between the beam and cable?
If, instead, the gold is drawn out into a cylindrical fiber of radius 2.400 µm, what is the length (in m) of the fiber?
What angle up from the ground must the hunter aim the gun so that the tranquilizer dart will hit the falling monkey? Given the angle above, what is minimum speed the tranquilizer dart must leave the gun to still hit the monkey?
A 180 lb man and a 120 lb woman stand side by side at the same end of a 300 lb boat, ready to dive, each with a 16 ft/s velocity relative to the boat. Determine the velocity of the boat after they have both dived, if:
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