Consider the circuit below: R1 R2 V1+ V2+ R3 In this circuit, V1 = 7 V, and V2 = 12 V. The odd %3D numbered resistors have size 6 ohms, and the even numbered resistor has size 20 ohms. Calculate the magnitude of the current through R2, in A.

can you verify if my answers in the "calculation chart" are correct?  (all final answers should include correct significant digit/decimal places/units.)

2.15. In a hexagonal unit cell, indicate the following planes and direc- tions: (1210), (1012), (1011), [110], [111], and [021].

The angle between was counted as incorrect,

State how many significant figures are proper in the results of the following calculations. (a) (106.7)(6.5)(46.210)(1.01)   (b) (25.8)2   (c) (2.9 ✕ 10−19)(3712)

A hot tub with a surface area of 28 ft2 is filled with water to a depth of 29 in . Hint: volume is calculated as area × height (A × h). A) What is the volume of water in the tub, in liters? Express your answer to two significant figures and include the appropriate units. B) How many kilojoules are needed to heat the water from 59∘F to 103 ∘F? Express your answer to two significant figures and include the appropriate units. C) If the hot-tub heater provides 5900 kJ/min, how long, in hours, will it take to heat the water in the hot tub from 59∘F to 103∘F? Express your answer to two significant figures and include the appropriate units.

1.3 Determines the value of m so that the vectors ū = [-2,6,4] and v = [m,9,6] are: A) collinear B) orthogonal