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A block of iron is suspended from one end of an equal-arm balance by a thin wire. To balance the scales, 6.15 kg are needed on the scale pan at the other end. The density of iron is 7.87×103 kg/m3 and the density of water is 9.98×102 kg/m3. What is the volume of the block (in m3)?
Next, a beaker of water is placed so that the iron block, suspended as above, is submerged in the beaker but not touching the bottom (see the figure). What mass (in kg) is now necessary to balance the scal.
A thin uniform rod has a length of 0.520m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. What is the mass of the bug
The specific heat of mercury is 138 J/kg Co Determine the latent heat of fusion of mercury using the following calorimeter data: 1 kg of solid Hg at its melting point of -39.0º C is placed in a 0.620 kg aluminium calorimeter with 0.40 kg of water ..
This magnetic field accelerates the electron in a circular motion. What is radius of the circle. The final situation is observed to be all water at 18°C. What was the mass of the ice cube.
A chair of weight 130 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 fixed at an angle of 39.0below the horizontal and the chair slides along the floor.
question 1 silver has a resistance of 0.00198 ohms. what voltage would produce a current of 100 a?question 2 find the
A 620 g basketball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force (in N)
When illuminated with light of 600nm (6*10^-7 m), the first dark fringe produced by a single slit lies a distance of 1.4 cm from the center of the screen placed 3.0 m from the slit
A standard deck of cards contains 52 different cards. A poker hand consists of five cards, chose randomly. How many different poker hands are there
Electromagnetic waves propagate through what? What is oscillating? What determines the velocity c in free space
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
If air resistance is negligible, using energy considerations alone, how fast must the ball be going after it falls 200 meters.
A solid object of density 660 kg/m3 is placed in water. What will be the buoyant force on the object
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