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Consider a space shuttle which carries life support material from earth to moon. A straight motion with a 384000 km is the closest distance between earth and moon. Assuming the shuttle's acceleration is 20.7 m/s2 for the first time interval 14.6 min of the trip, then travels with a constant velocity until the last time interval 14.6 min , when it accelerates at - 20.7 m/s2 , just coming to rest as it reaches the moon.
a- Find the maximum velocity reached?
b- Which part of the total distance is traveled at constant velocity?
c- How much time needed for the whole trip?
A long, thin, massless rod of length L rotates in a vertical plane about a frictionless pivot point. Find the speed of the mass at the bottom of the swing
a) Calculate the electrical repulsion between two protons in a nucleus if they are 1.35×10-15 m apart
The owner of a van installs a rear-window lens that has a focal length of -0.330 m. When the owner looks out during the lens at an object located directly behind the van, the object appears to be0.250 m from the back of the van, and appears to be 0.3..
a science-fair radio uses a homemade capacitor made of two 35cm x 35cm sheets of aluminum foil separated by a
Light passes from air into a substance. The angle of refraction is 22degrees and angle of incidence is 30 degrees. Compute the polarizing angle for this substance. Name a substance that has this index of refraction.
A beam of light, travelling in air, strikes a plate of transparent material at an angle of incidence of 56.0°. It is observed that the reflected and refracted beams form an angle of 90.0°. What is the index of refraction of this material?
During a violent storm, the wind over a flat, 200 m2 roof has a velocity of 10 m/s. What is the net force on the roof
A 1.0 cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 550 nm. What are the angles of the first two diffraction orders
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a distance of 22.0 km. Find the minimum height of the ionospheric layer
Superman attempts to drink water through a very longstraw. With his great strenth he achieves maximum possible suction.The walls of the tubular straw don't collapse. Find the Maxium height through which he can lift the water
A woman walks for 4 min directly north with a average velocity of 6 km/h; then she walks eastward at 4 km/h for 10 min. What is the magnitude of her average velocity
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