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A 25.0-mW laser beam of diameter 2.00 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror.
Ilustrate what is the magnitude of the torque about his shoulder if he holds his arm in each of the following ways? Straight out to his side, parallel to the floor.
In an interstellar gas cloud at 48.2 K, the pressure is 1.16 x 10-8 Pa. what is their mean free path
What is the fractional change in the period of the pendulum.
A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for that the stick will remain in equilibrium.
What is the magnitude of the acceleration of the anvil. find the mass of the planet from this information.
The Doppler effect can be used to measure flow rates in blood. A sound wave is transmitted into a vein or an artery, What is the expected frequency shift
An elementary particle called a pi meson (or pion for short) has an average lifetime of 2.6×10?8s when at rest. Find the average distance traveled by the pion as measured by the same observer
Two small objects, A and B, are fixed in place and separated by 2.97 cm in a vacuum. Object A has a charge of +2.16 microC, How many electrons must be removed from object A
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find (a) the max height of the projectile
A person pushes horizontally with a force of 220 N on a 66 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.28. What is the magnitude of the frictional force
A loudspeaker of mass 19.0 kg is suspended a distance of h = 2.00m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l= 3.50m. Illustrate what is the tension T in each of the cables?
In a television, electrons shoot down the picture tube and strike fluorescent material on the screen, causing light to be emitted and producing the picture. assume that a certain set, the electrons are accelerated from rest 2.0 x 10^8 ms-1 in abou..
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