-- Find the mass of all the pieces before the reaction.
-- Find the mass of all the pieces after the reaction.
-- Find the difference . . . (mass before) minus (mass after)
-- If any mass is missing, either you lost track of it, or else
it was converted to energy.
How much energy ?
(the missing mass) times c² .
Answer:
Speeed
Explanation:
The speed of an object is defined as the rate of change of distance:
where
d is the distance covered by the object
t is the amount of time needed to cover that distance
Speed is measured in meters per second (m/s). It should be noted that speed is a scalar quantity, so it only has a magnitude (and no direction).
Answer:
a. slope=rise/run
rise=0.02
run=-2
determined using the point (3,0.08) and (1,0.1) on the graph
slope=0.02/-2
= -0.01 or -1/100
b.area= area of trapizoid+ rectangle
((0.07+0.11)÷2)×4+1×0.07
0.36+0.07
=0.43$
c. the area represent the total cost after 5 hours
PLEASE MARK BRAINLIEST
Consider the reason that electric bulbs are manufactured in the first place: They are used to shed light on their world, to illuminate the darkness wherever they may be, to spread their warm reassuring glow for the benefit of all who may pass by.
An electric bulb uses a very thin wire, which heats to a high temperature and glows brightly when electric current passes through it. That wire is the strength of the electric bulb, but also its fatal weakness. For if the wire were surrounded by air when it heated and glowed, it would instantly burn up, and its glow would be extinguished forever. In order to keep the bulb glowing, air must not be allowed to reach it. This means that the wire must be sealed inside some sort of an enclosure that can be sealed so tight that even air cannot penetrate it.
The next question is: What to use for an air-tight enclosure ? It is said that Mr. Edison (the inventor of the electric light-bulb) tried more than 400 different ways to manufacture his invention, before he found one that was dependable enough to use in mass production. Edison himself claimed that the 400 failed experiments were trials of different materials for the filament ... the thin wire inside the bulb. But I suspect that many of those experiments involved the search for the best material to use to keep the air out, and prevent the thin wire from burning out. This relates exactly to the question you're asking.
I believe that Edison must have tried bulbs enclosed in steel, clay, salami, aluminum, stone, leather, wood, egg shell, cardboard, bone ... who knows what else. He eventually realized a critical related discovery: The enclosure for the fine wire not only needed to prevent air from entering the bulb, it also needed to allow light to get OUT ! I'm sure that as soon as this realization hit him, he rushed to his laboratory, tried a bulb surrounded by GLASS, and the rest became history.
Answer:
A. Yes, when another driver makes a mistake, you will have time to react
Explanation:
Yes it is good to make space cushion between two cars because due to some urgency when front vehicle applied brakes then the driver of the rear car will definitely take some time to react.
This reaction time may be between 0.5 s to 0.8 s for different people
so the rear car will move with same speed for above reaction time and it will cover the cushion distance between two cars
If we will not maintain this cushion distance between two cars then we can see that the two cars will collide and that may cause many accidents
so it is correct statement and correct option would be
A. Yes, when another driver makes a mistake, you will have time to react