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1. Skylab 1, the first American space station, had a mass of about 68 t. It was launched into orbit 435km above Earth's surface. Calculate the gravitational field strength at the location of Skylab 1 at this altitude. 2. The blade of a 22 table saw has a diameter of 25.4cm and rotates with frequency of 750rpm, what's the magnitude of the centripetal acceleration of the edge of the blade? 3. A star in the Andromeda galaxy is found to have a planet orbiting it at an average radius of 2.38 x 10^10 meters and an orbital period of 4.46 x 10^4 seconds. What is the star's mass? If the planet had an orbital period of 6.19 x 10^6 seconds, what would the orbital radius be?
With a 1400 Mohm resistor across its terminals, the terminal voltage of a certain battery is 2.56V. Find the internal resistance of this battery
a 2.0muf capacitor and a 4.0muf capacitor are connected in series across 1000v. the charge capacitors are then
Green light (λ = 536 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum that is 2.80 cm wide on a screen 1.70 m from the slit?
An aluminum rod is 17.0 cm long at20°C and has a mass of 350 g. If 14000 J of energy is added to the rod by heat, what is the change in length of the rod
10.0 moles of an ideal gas, at an initial pressure of 1.50 x105 N/m2 and an initial volume of 1.300 m3, Find the work done by the gas
A vehicle is safely negotiating an unbanked circular turn at a speed of 21 m/s. If the vehicle is to continue safely around the curve, determine to what speed must the driver slow the car
The drum on a washing machine starts from rest and accelerates with an angular acceleration of α = 1.2 rad/s2 as it goes into its final spin cycle. Through what angle does it rotate during this acceleration
In January 2005 the Huygens probe landed on Saturn's moon Titan, the only satellite in the solar system having a thick atmosphere. What did it weigh on the surface of Titan
After a plant or animal dies, its 14C content decreaseswith a half-life of 5730 years. what is the age of the ancient site
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 26.93 cm on a spring with a spring constant of 10.7167 N/m. What is the weight of the bananas
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 158 cm and makes an angle of 116° with the positive x axis. The resultant displacement has a magnitude of 131 cm and is directed at an angle of 32..
A man in a boat is looking straight down at a fish in the water (n = 1.333) directly beneath him. The fish is looking straight up at the man. how far above its eyes does the man appear to be
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