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Chemical formula of bleaching powder?

Higher Order Thinking

Kelly uses compensation to add 5,756 and 2,398 Her answer is 8,156. Is Kelly's answer correct? What mistake may she have made?

(a) the isotope of platinum that contains 118 neutrons 

(b) the isotope of krypton with mass number 84 

(c) the isotope of arsenic with mass number 75 

(d) the isotope of magnesium that has an equal number of protons and neutrons.

An electron ( -1.6*10e-19 c ) experience a force F of (3.2i -2.27j)10e-13N when passing through a magnetic field B of (o.72kT). What is the velocity of the electron?  note the k is a vector.

What is magnetic flux density?

A cart is given an initial velocity of 5.0 m/s and experiences aconstant acceleration of 2.0 m/s². What is the magnitudeof the cart's displacement during the first 6.0 seconds of itsmotion?

Grayson is deciding between two parking garages. Garage A charges an initial fee of $8 to park plus $1.50 per hour. Garage B charges an initial fee of $4 to park plus $2.50 per hour. Let A represent the amount Garage A would charge if Grayson parks for t hours, and let B represent the amount Garage B would charge if Grayson parks for t hours. Graph each function and determine which garage would be cheaper if Grayson needs to park for 6 hours.

In simple harmonic motion, when is the speed the greatest?
I. when the magnitude of the force is minimum
II. when the potential energy is maximum.
III. when the potential energy is zero.
IV. when the displacement is maximum.