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A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree, as well as its height, but are unable to make the measurements directly. However, by using a mirror to form an image of the tree and then measuring the image distance and the image height, you can calculate the distance to the tree as well as its height. Suppose that this mirror produces an image of the sun, and the image is located 0.9586 m from the mirror. The same mirror is then used to produce an image of the tree. The image of the tree is 1.0602 m from the mirror.
(a) How far away is the tree?
(b)The image height of the tree has a magnitude of 0.12 m. How tall is the tree?
In an instant given two cars are moving in opposite directions and they are separate a distance of 300km. Determine the distance in Km that each car travel in that time
A ski jumper has 1.2 ´ 10 J of potential energy at the top of the ski jump. The friction on the jump slope is small, but not negligible. What can you end about the ski jumper's kinetic energy at the bottom of the jump.
The atmospheric density at an altitude of 2500 km is about 1 molecule/cm3. find the mean free path predicted by the equation below
A proton initially at rest is accelerated by a uniform electric field. Find the voltage drop through which the proton moves
A mole of air in a closed container is initially at 300k. Suppose that you now add 10 J of heat to the air, without doing any work on it, what is the total thermal energy of the air
A building has two open doors facing the bay. The walls of the building absorb sound well, so multiple reflections can be ignored. find the distance d between the door centers
An inductor has an inductance of 0.082 H. The voltage across this inductor is 45 V, What is the current in the inductor
A sample of an unknown material appears to weigh 255 N in air and 195 N when immersed in alcohol of specific gravity 0.700. What is the volume of the material
A narrow beam of light with wavelengths from 450nm to 700nm is incident perpendicular to one face of a 40.00degrees prism made of crown glass, What is the angular spread of the beam after passing through the prism
A 0.07 kg bullet traveling at 599 m/s hits a 6.7 kg block of wood, What is the velocity (speed)of the wood block immediately after the bullet hits it
A glass bead charged to 3.8 nC exerts an 6.0Ã-10âˆ'4N repulsive electric force on a plastic bead 2.7 cm away
When the door is open and at rest, the door closer exerts a torque of 5.40 NxM. What is the least force that you need to be relevant to the door to hold it open.
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