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Your science teacher has assigned you the task of building a water barometer. You have learned that the pressure of the atmosphere can vary by as much as 5 percent from 1 standard atmosphere as the weather changes.
a) Find what minimum height must your barometer have?
b) One stormy day the TV weather person says "The barometric pressure this afternoon is a low 29.55 inches." Find the height of the water in your barometer.
In daily life we see many cases of people who are caught misrepresenting things who soon thereafter are excused and accepted by their contemporaries. How is This different in science.
A 63kg person rides in a 30kg cart moving at 14m/s at the top of a hill that is in the shape of an arc of a circle with a radius of 30m. What is the apparent weight of the person as the cart passes over the top of the hill
An AC adapter for a telephone-answering unit uses a transformer toreduce the line voltage of 120 V (rms) to a voltage of 8.5 V. The rms current delivered to the answeringsystem is 430 mA. What is the rms power delivered to the transformer?
A fully suited astronaut name Bill lands on newly discovered plant (called New) and goes on an exploration walk on the surface. Bill returns by a different path and finds that to return, he must jump down a cliff of 15.0 m . He doesn't have time t..
An object is dropped from rest from a height of 4.1 multiply.gif 107 m above the surface of the Earth. what is its speed when it strikes the Earth?
A cube has sides of length L=0.300m. It is placed with one corner at the origin. Find the total electric charge inside the cube
A beam of light is incident from air on the surface of a liquid. find the critical angle for the liquid when surrounded by air
A railroad car of mass 2.3 104 kg moving at 5.00 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
A 1.5kg weight hangs from a 8.0kg, solid wheel with a 20 cm circumfrence by a thin string wrapped several times around the circumfrence. How fast (in radians/second) is the wheel turning just before the weight hits the floor
A baseball thrown off a pedestrian pathway, 36 m above the Erie Canal, What is the range of the baseball
A box with a mass of 1.0 kg is moving to the right. Its initialspeed is 2 m/s. After traveling 3 m, its speed is 4 m/s. Inadditional to the usual forces (gravity, normal, friction) thereare two other forces acting on the box. One is a 5 N force th..
A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length and of negligible mass. Rod is pivoted at the other end. A bullet of mass m traveling parallel to the horizontal surface and perpendicular to ..
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