4 years ago

Light travels

1 answer:

7 0

Yep. 'a', 'b', and 'c' are all accurate.

Actually, 'b' doesn't go far enough. Light is not only "faster than
anything else we know of", we now know that it's impossible for
anything with mass to ever hit that speed, so we can just quit looking.

You might be interested in

PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!

konstantin123 [22]

.
.... . ....
3 0 0 k m

7 0

3 years ago

Read 2 more answers

The answer is C, method?

Arturiano [62]

Answer:

Numbers with more number

Explanation:

am I right or am I right?

4 0

3 years ago

A satellite is put into an orbit at a distance from the center of the Earth equal to twice the distance from the center of the E

Sveta_85 [38]

Answer:

995 N

Explanation:

Weight of surface, w= 4000N

Gravitational constant, g, is taken as 9.81 hence mass, m of surface is W/g where W is weight of surface

m= 4000/9.81= 407.7472

Using radius of orbit of 6371km

The force of gravity of satellite in its orbit, $F=\frac {GMm}{(2r)^{2}}=\frac {GMm}{4(r)^{2}}$

Where $G=6.67*10^{-11}$ and $M=5.94*10^{24}$

$F=\frac {(6.67*10^{-11}*5.94*10^{24}*407.7472)}{4*({6.371*10^{6}m)}^{2}}$

F= 995.01142 then rounded off

F=995N

6 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Ksenya-84 [330]

Downstream, the current is helping the swimmer go faster relative to the land

7 0

3 years ago

a person rearranging their living furniture expends 350 J of energy to push a coach 4.5 m across their living room calculate the

sergiy2304 [10]

1575 N

Explanation:

Step 1:

Let us consider that 350 J of energy is spent by that person to push a couch to 4.5 m from its initial position.

Let F be the force required and E be the energy spent and D be the distance traveled by the couch from its initial state.

In Physics, Work done = Force / Displaced distance

Step 2:

Let the work done be 350 J and Distance be 4.5 m

Then Force exerted = $350*4.5 = 1575 N$

5 0

3 years ago