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how would you describe the discoveries of Benjamin franklin, Robert millikan, cgarles-augastin de coulomb and Ernest ruthford and how do they relate to the planetary model of an atom?
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ^circC? Suppose that the air bubble is always in thermal equilibrium with the surrounding water.
You want to estimate the height of the Empire State Building. You start at its base and walk 15 m away. Then you approximate the angle from the ground at that point to the top to be 88 degrees. How tall do you estimate the Empire State Building to..
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
A 5m length of wire cariying a current of 5A lies on a hoizontal table with a rectangular top of dimensions 3.00m x 4.00m. What magnetic force acts on this segment of wire
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
Block B in the figure weighs 760 N. The coefficient of static friction between block and table is 0.28; angle ? is 27°; Find the maximum weight of block A for which the system will be stationary
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
A 0.800 m long solenoid is formed by wrapping 740 turns of wire around a hollow cylinder with a radius of 0.160 m. calculate the energy stored in the field
The average depth of Earth's oceans is 2.236 mi. Suppose 68% of the earth is covered in water and that the population of the earth is 6.33 billion. (a) How much water mass on the surface of earth is there per person and (b) to help visualize it, w..
Ten cars at an intersection are blowing their horns simultaneously, What is the average sound level for each car
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