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a 2 kg ball moving at 3 m/s hits a wall and bounces off. immediately after the collision it moves at 3 m/s in the opposite direction. what is the magnitude of the change in the objects momentum?
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
The potential difference between the terminals of a battery is 12V when measured directly using a voltmeter. What is this maximum power
A piano tuner stretches a steel piano wire with a tension of 830N . The wire is 0.400m long and has a mass of 3.10g. What is the frequency of its fundamental mode of vibration
You wish to design a velocity selector that will allow protons to pass through only if they have a speed of 500 m/s, You decide to produce this electric field using a parallel-plate capacitor with a plate spacing of 1.0 mm. What is the electric pote..
a fluid at 690 kpa has aspecific volume of 0.25m3/kg and entersna process with a velocity of 150m/s. calculate the change in internal energy of the fluid
Show that the sun is not at rest in the center of the solar system by calculating the distance from the Sun's center to the center of mass of the Sun-Jupiter system
The "reaction time" of the average automobile driver is about 0.7s. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 12.0
Write down an equation for the radial component
A standing observer perceives a train whistle to have a frequency of 300 Hz. compute the frequency of the sound waves emitted from the train
A "Carnot" refrigerator (reverse of a Carnot engine) absorbs heat from the freezer compartment at a temperature of -17°C, How much work must be done by the refrigerator to change 0.20 kg of water at 24°C into ice at -17°C
White light, which is a mix of all visible wavelengths in the range of 400 nm to 700 nm, What is the thickness of the plate if the next wavelength for which there is constructive interference is 540.6nm
q1. runner a is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 kmh due east. runner
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