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a) An ice cube is floating at the top of a glass of water. After it melts completely, will the water level rise, fall, or stay the same? Explain your answer.b) A person sitting in a boat floating on a small pond throws a heavy anchor overboard. Does the level of the pond rise, fall or stay the same? Explain
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.0 mm)sin(24.0x -2.0 s-1 * t+0.320 rad), with x in meters and t in seconds. What is the wavelength ? of the two waves? W..
A 10-kg box is stationary on the ground and pushed by a downward force of 30 N. Calculate the supporting normal force acted on the box from the ground
Three positively charged particles are constrained to move on a fixed circular track. If all charges were equal, the particles would be spaced 120 degrees apart. Now suppose that two charges are equal and they are spaced 90 degrees apart in the equil..
A 1100kg car traveling south at 24 m/s with respect to the ground collides with and attaches to a 2550kg delivery truck traveling east at 16 m/s. Determine the direction of the velocity of the two vehicles
An astronomer on earth observes two galaxies moving away from each other along a line that passes through the earth. At what speed are the galaxies moving apart relative to each other?
An electric fan is running on HIGH. After the LOW button is pressed, the angular speed of the fan decreases to 83.8 rad/s in 1.75 s. Determine the initial angular speed of the fan
Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.
Explain in terms of Newton's law each of the following situations. How does a bumblebee hover in midair
During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. What would be the time of flight
A solid cylinder (radius = 0.200 m, height = 0.170 m) has a mass of 19.8 kg. This cylinder is floating in water. How much of the height of the cylinder is in the oil
If the bullet leaves the gun at a speed of 280 m/s, by how much will it miss the target? Illustrate at what angle should the gun be aimed so as to hit the target?
A 69.0 kg person throws a 0.0400 kg snowball forward with a ground speed of 35.0 m/s. What are the velocities of the two people after the snowball is exchanged
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