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A 35 millimeter camera equipped with a 105 millimeter focal length lens is used to photograph a tree 19 meter tall. The aperture of the lens is set at f/8. A 32 millimeter high image of the tree on the film is required. Find the required distance, between the tree and the camera to take the photograph?
An astronaut lands on a distant planet and wants to measure the planet's gravitational acceleration. What is the acceleration due to gravity on this planet
two objects are connected by a light string that passes over a frictionless pully, find the magnitude of the acceleration of the suspended block as it falls
Protons are projected with an initial velocity v0 = 10360 m/s into a region where a uniform electric field E = 670 N/C is present. The protons are to hit a target that lies a horizontal distance of 1.27 mm from the point where protons are launched..
A planet has two small satellites in circular orbits around the planet. the first satellite has a period 18.0 hours, what is the period of the second satellite
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. find the total kinetic energy of the automobile
A deuteron particle (the nucleus of an isotope of hydrogen consisting of one proton and one neutron and having a mass of 3.34×10?27 kg) moving horizontally enters a uniform, vertical, How fast was this deuteron moving just before it entered the mag..
A large window measures 1.7 m by 2.9 m. At what rate will heat be conducted through the window when the room temperature is 26 C and the outside temperature is -2 C if the window instead has a double pane of glass (a "thermopane"), in which each pane..
Did you firm earn profit or incurred loss at the end and make a small comment on your financial position at the end.
Suppose a spherical planet of radius R and an average density 5.0 x 103 kg/m3; this is approximately the average density of earth. Evaluate what is the radius of the planet
Gas is confined in a tank at a pressure of 9.5 atm and a temperature of 24.5°C. what is the pressure of the gas remaining in the tank
Using kinematic equations prove that if two balls are released simultaneously from a table, one with zero velocity and other with horizontal velocity, they will both reach ground at the same time.
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him.
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