What does I stand for in the following equation (m is mass and r is distance): I=mr^2

A particle has γ=18,399. a)Calculate c-v in m/s. (I would have asked for 1 - v/c, making the answer dimensionless, but the system doesn't seem to take numbers that small. Gamma is chosen to make the particle extremely close to the speed of light.) If your calculator gives problems, you might want to solve the appropriate equation for c-v or c(1 - v/c) and use an approximation. b) In the previous problem, in a race to the moon, by 3/4ths the distance, light is one or ten meters ahead of the particle. We routinely approximate mass as zero, gamma as infinite, and speed as the speed of light. ("Massless particles" -- gamma and m have to be eliminated from the expressions. Light is a true massless particle.) If a massless particle has momentum 1,739 MeV/c, calculate its energy in MeV.

Which of the following will result in a dimensionless number if x and y have length dimensions, z has mass dimensions, and a has time dimensions?

I need the answer as soon as possible

Five clocks are being tested in a laboratory. Exactly at noon, as determined by the WWV time signal, on successive days of a week the clocks read as in the following table. Rank the five clocks according to their relative value as good timekeepers, best to worst. Give the number of the correct clock in each case. Which clock is (a) the best timekeeper? (b) the second-best timekeeper? (c) the third-best timekeeper? (d) the fourth-best timekeeper? (e) the worst timekeeper? Clock Sun. Mon. Tues Wed. Thurs. Fi. Sat. A. 12:36:40 12:36:56 12:37:12 12:37:27 12:37:44 1237-59 12:38:14 11:59:59 12:00:02 11:59-57 12:00:07 12:00:02 11:59:56 12:00:03 B 15:50:45 15:51:43 15:52-41 15:5339 15:54:37 15:5535 155633 D 12:03:59 12:0252 1201:45 12:00:38 11:59:31 11:58:24 11:57:17 E 12:03:59 12:02:49 12:0154 12:01:52 1201:32 1201:22 1201:12 (a) (b) (c) (d) (e) MacBook Pro G Search or type URL @ 23 $ % & 2 3 4 5 6 7 9 Y P W F G H K C V N * 00

If massQ/mass A in AQ= 0.271 and mass Q/ mass A in AxQy = 0.362, what is the formula of AxQY?

A surveyor needs to find the distance across a straight river. Markers are set up at points A and B on opposite sides of the river (see diagram), and at point CC that is 290 feet from B, the angle C is measured and found to be 45∘19.8′You may assume angle B is a right angle. The distance from A to B is  feet.

How many years older will you be 1.30 billion seconds from now? (Assume a 365-day year.) dont provide handwritten solution

A biologist studies a species of bacteria called FAST, her research reveals that FAST bacteria reproduced prodigiously. If a bacteria culture contains 10 FAST bacteria at time t= 0, the number of FAST bacteria in the culture later time 't' is N(t) = 10 +6t +2t2 where 't' is expressed in seconds.  How many bacteria occupy the culture a time t = 10s?  At t =11s? Calculate how many net bacteria were born during the interval between t=10 and t=11, assume no bacteria died.  Now use calculus to find the birth rate of bacteria (rate at which new bacteria get born) at time t=10s, it may help to sketch a rouch graphy of N vs 't'.

Suppose f(x,y,z) = Ax2 + Bxy + Cxyz2.   What is ▽f?