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Ice at 0.0 degrees Celsius has a density of 917kg/m3. A 3.00cm3 ice cube is gently released inside a small container filled with oil and is observed to be neutrally buoyant. What is the density of the oil?
In a slap shot a hockey player accelerates the puck from a velocity of 5.00 m/s to 30.0 m/s in the same direction. calculate the distance over which the acceleration acts
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
A stone is thrown outward from the top of a 59.4m high cliff with an upward velocity component of 19.5 m/s. How long is the stone in the air
A box rests on top of a flat bed truck. The box has a mass of m = 18.0 kg. The coefficient of static friction between the box and truck is ?s = 0.82, what is the frictional force the truck exerts on the box
Two stationary positive point charges, charge 1 of magnitude 3.55 and charge 2 of magnitude 2.00 , are separated by a distance of 30. An electron is released from rest at the point midway between the two charges, and it moves along the line connec..
The power brick for the author's laptop computer has a power rating of 90 W. It uses a step-down transformer to convert the AC voltage from a wall socket (Vrms = 120 V) to a value near 12 V. find the rms current in the output coil of the transforme..
A bullet of mass m = 28 g is fired into a wooden block of mass M = 4.1 kg as shown in the figure below. The block is attached to a string of length 1.5 m. what was the initial speed of the bullet
A spherical balloon of volume 4.03 x10^3 cm3 contains helium at the pressure of 1.15 x10^5 Pa. How various moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x10-22 J.
Suppose 199 W of heat flows by conduction from the blood capillaries beneath the skin to the body's surface area of 1.37 m2. estimate the average distance of capillaries below the skin surface
The speed of a bullet as it travels down the barrel of a rifle toward the opening is given by v = (-5.30 107) t 2 + (3.15 105) t, What is the length of the barrel
A 0.350-{\rm m}-long cylindrical capacitor consists of a solid conducting core with a radius of 1.25mm, Calculate the energy stored in the capacitor when fully charged
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