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The Moon has neither an atmosphere nor surface water. Can chemical weathering occur on the Moon? Can mass wasting occur on the Moon? Explain. Describe several ways in which you can protect your drinking water.
A train siren indicating that the stationary train is ready to leave the station has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling away from the train at 30 m/s? The speed of sound in air is 343 m/s.
A coffee filter of mass 1.4 grams dropped from a height of 2 m reaches the ground with a velocity of 0.6 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.
At a certain instant a ball passes location m. In the next 4 seconds, the ball's average velocity is m/s. At the end of this 4 second time interval, what is the height y of the ball?
what speed does the rock have as it strikes the ground?
A lens with a refrective index of 1.5 is coated with a material of refractive index of 1.2 in order to minimize the reflection. what is the thinnest possible coating
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern. How many electrons pass through the wires connected to the patient
A 140g coin sits on a horizontally rotating turntable. The turn table makes on revolution each 2 s. the coin is located 8.00 cm from the axis of rotation of the turntable. The acceleration of gravity is 9.81 m/s/s. what is the frictional force acting..
A railroad car of mass 2.40 multiply.gif 104 kg is moving with a speed of 3.82 m/s. find the speed of the four cars after the collision
A satellite is in a circular orbit around the earth. The period of the satellite is 22 hour. Determine what is the speed of the satellite
Discuss the most significant sources of error in the experimental procedures. if the temperature of ice added to the calorimeter in the heart of fusion experiment were less than 0 degrees Celsius how would this affect the results? Why must you use sm..
Suppose a person walks 5.00m east and then 4.00m west in 4 sec. What is the average velocity of this person
Photons of wavelength 430 nm are incident on a metal. What is the work function of the metal
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