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When an 82.0 kilogram adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.50 x 103 Joule. Find by how much does the potential energy of a 20.0 kilogram boy increase when the boy climbs a normal staircase to the second floor?
The figure below shows a thin-lens representation of a compound microscope (not to scale). The objective produces a real image I of object O just inside the focal point F1 of the eyepiece. Image I then acts as an object for the eyepiece, which pro..
what is the maximum possible value of the angular momentum for an outer electron in the ground state of a scandium
The highest barrier that a projectile can clear is 14.6 m, when the projectile is launched at an angle of 17.0° above the horizontal. What is the projectile's launch speed
A 0.302-m-thick sheet of ice covers a lake. The air temperature at the ice surface is -16.0 °C. In 5.90 minutes, the ice thickens by a small amount. Calculate the number of millimeters by which the ice thickens
On the floor1.5 m in front of the mirror is a small table, 0.75 mhigh. Illustrate what is the minimum height the mirror must have foryou to be able to see the top of the table in themirror?
what horizontal force is required to move the crate. If the coefficient of kinetic friction between a 33 kg crate and the floor is 0.26, what horizontal force is required to move the crate at a steady speed across the floor? Which is 84 I just help..
A space of 100 cm3 and one of 300 cm3 seperated by a capillary tube, in which a tap is arranged, connected. How big is the pressure in the related areas
The nucleus of a 125Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q =+54e. What is the proton's acceleration
A black body has a mass of 4.40 kg, specific heat of 2000 J/(kg · C°), surface area of0.198 m2, emissivity 1.00, and initial temperature 95° C. The surroundings are at a temperature of 20.8° C.
While running, a man dissipates about 0.60 Joule of mechanical energy per step per kilogram of body mass. determine how fast is the man running
A nonconducting thin layer carries charge with a uniform density of 8.40 µC/cm2. (a) What is the electric field 3.80 cm in front of the wall if 3.80 cm is small compared with the dimensions of the wall? magnitude and direction?
The image of a very distant car is located 25 cm behind a convex mirror. What is the radius of curvature of the mirror
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