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If an atom has 104 electrons, 157 neutrons, and 104 protons, evaluate what is the approximate mass? Find what is the name of this element?
Two trains on separate tracks move toward one another. Train 1 has a speed of 100 km/h, train 2 a speed of 60.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Suppose the speed o..
A wire in which there is acurrent of 6.39 A is to be formed into a circularloop of one turn. what is the required radius
Consider a person on the moon who launches herself into a standing broad jump at 45 degrees. The average force generated during launching is, compute the maximum height of the jump
A series RC circuit has a time constant of 0.950 sec. The battery has an emf of 45.0 Volt, and the maximum current in the circuit is 490 mA. Find what is the value of the capacitance
a 3.00-m long rod is hinged at one end. THe rod is initially held in the hozizontal position, what is the angular acceleration as it is released
A ray of light is incident at an angle of 30 deg. to the normal on an air glass interface. find the angle the refracted ray makes to normal
A 75 kg man weighs 735 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose"12% of his body weight
A sailboat is traveling east at 5.5 m/s. A sudden gust of wind gives the boat acceleration (0.60 m/s2, 40 degree north of east). Find the boat speed and direction 6.0 second later
How much work did the movers do pushing a 160 kg crate 10.3 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
A rectangular fish tank measures 30 cm by 75 cm by 40 cm high. The tank is filled with water to a depth of 37 cm. What is the total force of the water on the bottom
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, How fast is the center of mass of the two-stone system moving
A 10 g steel marble is spun so that it rolls at 150 rpm around the inside of a vertically oriented steel tube. The tube is 12 cm in diameter. Assuming that the rolling resistance is negligible enough for the marble to maintain 150 rpm for several ..
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