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a) If a mass of 2kg is attached to a string of length 1m and pulled back to the angle shown (30 degrees from straight down), what velocity will the mass have at the "bottom" of its swing?
b) What will the period of its oscillations be?
An engine is built to extract power from the temperature difference in the ocean. what is the maximum theoretical efficiency of such an engine
Consider an ideal gas at 28.9°C and 0.96 atm pressure. To get some idea how close these molecules are to each other, on the average, imagine them to be uniformly spaced,
two charges are placed on the x axis. one charge q1 18.5 microc is at x1 3.0 cm and the other q2 -13 microc is at x2
The box of a well-known breakfast cereal states that one ounce of the cereal contains 144 Calories (1 food Calorie = 4186 J). what is the heaviest barbell
Compute the final equilibrium temperature.
A source emits sound uniformly in all directions. A radialline is drawn from this source. On this line, determine the radialpositions of two points, 1.28 m apart, such that the intensitylevel at one point is 2.46 dB greater than that at the other.
A man lifts a 2.7-kg stone vertically with his hand at a constant upward acceleration of 1.7 m/s2. What is the magnitude of the total force of the stone on the man's hand
The boiling point of water at 1 atm is 373 K. What is the volume occupied by water gas due to evaporation of 12 g of liquid water at 1 atm and 373 K
calculate the ratio of the drag force on a jet flying at 1140 kmh at an altitude of 10 km to the drag force on a
The steel I-beam in the drawing has a weight of 1.50 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends
The spheres are then separated so that there is a distance of 200mm between their centers. What is the force between them?
A solenoid is to have an inductance of 0.274 mH, a cross-sectional area of 5.73 10-4 m2, and a length of 37.9 cm. How many turns per unit length should it have
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