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(a) For a satellite to be in a circular orbit 810 kilometer above the surface of the earth, determine what orbital speed must it be given? m/s
(b) Determine what is the period of the orbit (in hours)?
h
A worker on the roof of a house deops his 0.26 kg hammer, which slides down the roof at constant speed of 7.46 m/s. The roof makes an angle of 19 dergee with the horizontal, and its lowest point is 23.2 m from the ground.
Estimate the percent change in mass δm/m of a block of copper which is heated from 300 K to 400 K. The molar speci?c heat of copper is cP = 2.6·104 J/kmol·K and, its atomic weight is 29.
Announcers at a certain radio station say that they are at "95 FM on your dial," meaning that they transmit at a frequency of 95 MHz, find the wavelength of the radio waves from this station
Kenny pulls with a force of 850 N. Justin pushes with a force of 650 N. The crate weighs 1250 N and sits on a ramp that is 40 degrees from the horizontal. Tyler is pushing at an angle of 35 degrees with respect to the crate
A 0.145 kg baseball pitched at 42.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. calculate the average force between the ball and bat
A marble (radius 0.8 cm and mass6.0 g) rolls without slipping down a rampof vertical height 28 cm. What is the speed of the marble when it reaches the bottom of the ramp
a shower head has 20 circulaar openings, each with radiius 1.0 mm. what is its speed as it exits the shower head openings
An automobile having a mass of 1000 kg is driven into a brickwall in a safety test. What was the speed of the car before impact
You have a 120g meterstick. A) Where should you place the meterstick atop your finger so it balances? (Express your answer to two significant figures and include the appropriate units.) B) Where's the balance point if you place an additional 150 mass..
Two objects moving toward each other collide and rebound. Determine the change in kinetic energy of the smaller object
The K-shell ionization energy of iron is 8500 eV, What is the wavelength of Kalpha X-rays emmited by iron
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.137 liters per second, At what speed does the water exit the nozzle
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