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Does the velocity of the particles of fluid at rest changes in downward direction due to gravitational force? Why it changes or not changes? For finding pressure for fluid at rest the formula is p=hdg. Why we not take the average of two accelerations, the acceleration of particles of fluid instead of acceleration due to gravity? Why?
two formula one racing cars are negotiating a circular turn and they have the same centripetal accelaration. however
A 64-kg skier is going down a slope oriented 36° above the horizontal. Determine the pressure that each ski exerts on the snow
According to the textbook, a hypothesis is "a causal explanation offered for further investigation or testing." The book provides several methods for testing the quality of a hypothesis. Choose one of the statements below and use one or more of the t..
when the wavelength of an incident radiation exceeds 560nm the emission of photoelectrons from a surface ceases. what
In the Thorium Decay chain, how much energy is released in total per initial Thorium atom? How many watts of power would a 1 kg lumo of pure Thorium produce? How many watts would that same lump is producing one billion years later?
A ray of light strikes a flat block of glass (n = 1.53) of thickness 1.80 cm at an angle of 36.0° with the normal. find the angles of incidence and refraction at each surface
Two stationary positive point charges, charge 1 of magnitude 3.65nC and charge 2 of magnitude 1.75nC, are separated with a distance of 59.0cm. An electron is released from rest at the point midway among the two charges, and it moves along the line co..
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. What is the mass of this canister
people often use the term energy crisis implying that we are running out of energy. how can this be if energy is
A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. Through how many revolutions has the rotor turned
one end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft of depth 85.0m . the rope
If the efficiency of a reversible engine is 28.%, what is its COP operated as a refrigerator
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