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Question: A woman stands on a scale in a moving elevator. her mass is 60 kg and the combined mass of the elevator and scale is an additional 815. starting from rest, the elevator accelerates upward. during the acceleration, the hoisting cable applies a force of 9410 n. what does the scale read during the acceleration?
The box of a well-known breakfast cereal states that one ounce of the cereal contains 144 Calories (1 food Calorie = 4186 J). what is the heaviest barbell
Calculate the rms speed of a molecule of O gas O2 at 20C. Atomic weight of O= 16u
A solid, uniform, spherical boulder starts from rest and rolls down a 50.0-m high hill. What is the translational speed of the boulder
An energy of 28.0 eV is required to ionize a molecule of the gas inside a Geiger tube, What maximum number of ion pairs can it create
A radioactive isotope has an activity of 8.56 mCi. After 3.25 hours the activity is 5.74 mCi. What is the half-life of the isotope
A tetrahedron has edges of length a, and charge Q at each apex. What is the potential energy of the system
Assume that each person is about the similar distance from the center of the field and can generate the same level of sound intensity. How numerous people are at the game.
a garden hose with an internal diameter of 2.0 cm is connected to a stationary lawn sprinkler that consists merely of
When 4625 J of heat are added to a 0.13-m-long silver bar, its length increases by 4.59 10-3 m. What is the mass of the bar
A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the figure. the 3.00-kg block is tied to a wall by a horizontal rope. how many forces would we draw acting on the block
His arm is 70 cm long and has a mass of 4.0 kg. Illustrate what is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?
Show that the equation gives you correct units. Give reasons why the temperature of the gas is in the numerator and the molar mass of the gas is in the denominator.
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