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Electric winch pulley systems like the one shown below are often used to place equipment into the ocean from a research vessel (like the Scripps Oceanography ship Sally Ride). Assume the motors of one of these winches is powered a battery with an total energy capacity (potential energy) of E_{battery} =
E?battery ??=7.64 Watt-hour and total efficiency (fraction of stored energy turned into useful mechanical work) of ε = 0.252. The motor, fully charged, is connected to a cable through a pulley system to a CTD (conductivity, temperature and pressure/depth) instrument with a mass of 94.7 kg. If the CTD instrument, initially at rest, is pulled vertically up from the water, how high can it go before the motor battery is completed drained?
An 8-kg box is pushed 15 m across a level floor by a constant 15.7-N applied force. Assuming the box starts from rest, what is the final velocity of the box at the 15-m point
A capacitor is connected across an ac generator whose frequency is755 Hz and whose peak output voltage is140 V. The rms current in the circuit is 3.0 A. What is the capacitance of the capacitor?
What is the number of conduction electrons. A centrifuge rotor has a moment of inertia of 3.40 x10-2 kg·m2. How much energy is required to bring it from rest to 8000 rpm.
A lamp hangs vertically from a cord in a descending elevator with a constant deceleration a. If the tension in the cord is T0, answer the following, What is the lamp's mass
there are two identical positively charged conducting spheres fixed in space. the spheres are 42.6 cm apart center to
What force (magnitude) does the spring exert on the object while it is a distance 2.90×10-2 below equilibrium position, moving upward.
W hat is the magnitude of an average force exerted on the superball by the sidewalk. what is force caused by the water on the bottom.
A satellite is in elliptical orbit with a period of 8.82 x 104 s about a planet of mass 6.80 x 1024 kg. The pericenter distance is 15900000 m. What is its angular speed at apocenter
What is the frequency of the fundamental and the second harmonic - If the tension in the clothesline is increased
A gamma-ray telescopes intercept a pulse of gamma radiation from magenta, a type of star with a spectacularly large magnetar field. Determine the magnitude of the rms magnetic field of the gamma-ray pulse
Two large, parallel, metal plates carry opposite charges. They areseparated by 0.1 m and the potential difference between them is500. V. What is the magnitude of the electric field, if it is uniform inthe region between the plates?
A freezer with a coefficient of performance of 3.53 is used to convert 1.61kg of water to ice in one hour. How much heat is discarded into the room that houses the freezer
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