An electron moving in the direction of the +2-axis enters a region of uniform magnetic field. If the electron experiences a magnetic deflection in the -x direction, the direction of the magnetic field in this region points in the direction of:. 1. O+z-axis
2. O-z-axis
3. 0-x-axis
4. O %-axis
5. Oty-axis
6. O-y-axis

In a vernier instrument the main scale is in 1/2 mm divisions .vernier is made by redividing 19 such divisions into 20 equal parts. calculate the least count of the instrument.

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c