An electron is accelerated from rest through a potential difference of 3750 V. It enters a region where the magnetic field is 4.0 mT perpendicular to the velocity of the electron. Calculate the radius of the path this electron will follow

A) 1.2 cm
B) 2.2 cm
C) 3.2 cm
D) 4.2 cm
E) 5.2 cm


E

Physics & Space Science

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A ball bearing rolls along a smooth horizontal tabletop, and crashes head-on into a second ball bearing of half its mass. If both ball bearings roll in the x-direction only (either positive or negative) and the initially stationary ball bearing is observed to have a velocity of +2.4 m/s after the collision, what was the initial speed of the first ball bearing?

A. More information is required B. 7.2 m/s C. 3.6 m/s D. 1.8 m/s

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A rod, with sides insulated to prevent heat loss, has one end immersed in boiling water 100°C and the other end in a water-ice mixture at 0.00°C

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Physics & Space Science

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Physics & Space Science

The Moon lacks an atmosphere because its surface gravity is only ________ the Earth's

Fill in the blank(s) with correct word

Physics & Space Science