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If an object is 30 cm in front of a convex mirror that has a focal length of 60 m, how far behind the mirror will the image appear to an observer? How tall will the image be?
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. What is the mechanical energy lost due to friction
A 2.0 kg mass is attached to the end of horizontal spring (k = 50 N/m), What is the maximum speed of the mass
The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle ?= 36o by a brace that is attached to a pin. Find the magnitudes of these three forces
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.11 m2 and whose thickness is 3 mm. what is the percentage lost by the window
q1. a ski jumper has 1.2 acute 10 j of potential energy at the top of the ski jump. the friction on the jump slope is
We have a container of compressed air. Assume that air is diatomic ideal gas. The volume of the container is 1.35 liters. Find the final volume of the gas
An ideal gas is compressed at constant pressure to one-half its initial volume. a)If the pressure of the gas is 150kPa , and 770J of work is done on it, find the initial volume of the gas.
Use the semi-infinite-well potential to model a deuteron, a nucleus consisting of a neutron and a proton. How many excited states are there
How much water must be displaced to float a cubical block of wood (density 655 kg/m^3) that is 15.0 cm on a side
In a women's 100-m race, accelerating uniformly, Laura takes 1.87 s and Healan 3.12 s to attain their maximum speeds, find the maximum distance by which Healan is behind Laura
A certain nuclear power plant has an electrical power output of 420 MW. The rate at which energy must be supplied to the plant is 1,570 MW. At what rate is thermal energy expelled by the plant
A stick of dynamite explodes into two pieces of masses of 3.0 kg and 2.0 kg. how far does the other piece slide
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