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4vir4ik [10]
2 years ago
5

How are vectors added and subtracted

Physics
1 answer:
blagie [28]2 years ago
8 0

Place the next vector with its tail at the previous vector's head. ... To subtract vectors, proceed as if adding the two vectors, but flip the vector to be subtracted across the axes and then join it tail to head as if adding. Adding or subtracting any number of vectors yields a resultant vector.

Explanation:

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Why are the meters squared in the formula to calculate acceleration?
lianna [129]

Answer:

During acceleration, you are moving across a distance over a time, but also increasing how fast we are doing it. Therefore, it means by how many meters per second the velocity changes every second

Explanation:

8 0
3 years ago
A certain 100W light bulb has an efficiency of 95%. How much thermal energy will this light bulb add to the inside of a room in
Usimov [2.4K]
Since the bulb consumes 100 watts of power and its efficiency is 95%,
it generates 95 watts of light energy and 5 watts of heat energy whenever
it's turned on.

5 watts means  5 joules of energy per second.

(2.5 hours) x (3,600 seconds/hour) =  9,000 seconds

(9,000 seconds) x (5 joules/second)  =  45,000 joules of heat in 2.5 hours

7 0
3 years ago
you ride your bike for a distance of 30km. you travel ata a speed of 0.75km/minute.how many minutes does it take
mihalych1998 [28]
Distance for which the bike is ridden = 30 km
Speed at which the bike is driven = 0.75 km/minute
Let us assume the number of minutes taken to travel the distance of 30 km = x
Now we already know the formula of speed can be written as
Speed = Distance traveled/ Time taken
0.75 = 30/x
0.75x = 30
x = 30/0.75
  = 40 minutes
So the time taken for riding a distance of 30 km will be 40 minutes. I hope this procedure is simple enough for you to understand.
7 0
3 years ago
Read 2 more answers
Plz answer will give Brainliest answer to whoever does.
Jobisdone [24]

Answer:

A foot kicking ball.

An iPhone being charged

Explanation:

  • A foot kicking a ball is example of transportation of Kinetic energy

\\ \sf\longmapsto K.E=\dfrac{1}{2}mv^2

  • An iPhone being charged means the electronic energy is converted into machinery energy
6 0
3 years ago
When not in a vacuum, what force causes objects in freefall to fall at different speeds??
Deffense [45]
Hi,

My best answer would be Gravity. Is it a multiple choice question? Or is it an essay question. 
4 0
3 years ago
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