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An electron was accelerated from rest through a potential difference of 9900 V. What is its speed? The mass of an electron is 9.11 x 10-31 kg, and its charge is 1.602 x 10-19 C. Please show work.
A roughly spherical volume of rock 2.1 km in radius is 30% denser than the surrounding rock, calculate the gravitational acceleration it produces at Earth's surface
You find a used battery and discover that it is no longer strong enough to power your CD player. What is the potential difference
Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. Determine the final speed of each disk
Suppose you're building a scale model of the hydrogen atom, and the nucleus is represented by a ball of radius 3.2 cm (about the radius of a baseball)
a garden hose with an internal diameter of 2.0 cm is connected to a stationary lawn sprinkler that consists merely of
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 4.88 s after the stone is dropped. How deep is the hole?
A 9 kg mass slides to the right on a surface having a coefficient of friction 0.37 as shown in the figure. The mass has a speed of 5 m/s when contact is made with a spring (of con- stant 107 N/m)
A horizontal compass is place 25 cm due south from a straight vertical wire carrying a 17A current downward. In what direction does the needle point at this location? assume the horizontal component of the Earth's field at this point is 45uT. Solve u..
A solid spherical ball of mass 1.27 kg and radius 0.12 m rolls along a smooth, level surface with a speed of 2 m/s. How far up the plane does the ball go
A car traveling 50.7 km/h is 21.9 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.03 slater. (a) What is the car's constantdeceleration magnitude before impact? (b) How fast is the cartraveling at impact?
two sinusoidal waves with the same amplitude a and frequency f travel in opposite directions along a long string. you
A small, 1.70-mm-diameter circular loop with R = 1.30×10?2? is at the center of a large 100-mm-diameter circular loop. Both loops lie in the same plane
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