(20) QUESTION 2
2 لي
The following are readings of velocity versus time for a car travelling from
TIME (5)
VELOCITY (m. s)
o
10
20
30
40
SO
2.1.1 What is the dependent variable
2.2.2 State the independent variable
(2)
2.2 Draw the velocity versus time graph using the readings in the table
(6)
2.3 State weather this graph is a direct proportion graph or an inverse proportion graph
(1)
(3)
2.4 Calculate the gradient of the graph
2.5 The following is a graph drawn by learners in grade 11 showing volume versus pressure of a gas
oeing pumped in a car wheel.​

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Comedians like to joke that the reason we haven’t been visited by intelligent life from elsewhere in the universe is that aliens have been monitoring earth’s broadcasts of intellectually embarrassing tv programs, like gilligan’s island, fear factor, the jersey shore, and the jerry springer showand so consider us far too primitive to merit a visit. let’s check the assertion that aliens could have been receiving them. tv programs are broadcast at a frequency of about 100mhz with about 100kw of total power in 30frames per second, which emanatesroughly uniformly in all directions. assume that interstellar space transmits these broadcasts without attenuation. no matter how smart they are, aliens would require at least one photon per frame to interpret our signals. findthe number of photons per unit time per unit area reaching a receiver on a possible planet in the nearest star system, which is about 4 light-years away (a light-year is the distance light travels in a year). if aliens aimed a receiver or detector directly at earth, how big (in diameter) would it have to be to receive a photon per frame

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ