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asambeis [7]
3 years ago
11

Four 240 Ω light-bulbs are connected in series. What is the total resistance of the circuit? What is their resistance if they ar

e connected in parallel?

Physics
1 answer:
irina [24]3 years ago
5 0

Had to submit as image as it wouldn't let me paste these symbols in the answer box

hope this helps:)

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Calculate the change in length of a 90.5 mm aluminum bar that has increased in temperature by from -14.4 oC to 154.6 oC
nignag [31]

Answer:

 ΔL = 3.82 10⁻⁴ m

Explanation:

This is a thermal expansion exercise

          ΔL = α L₀ ΔT

          ΔT = T_f - T₀

where ΔL is the change in length and ΔT is the change in temperature

Let's reduce the length to SI units

          L₀ = 90.5 mm (1m / 1000 mm) = 0.0905 m

let's calculate

          ΔL = 25.10⁻⁶ 0.0905 (154.6 - (14.4))

          ΔL = 3.8236 10⁻⁴ m

     

using the criterion of three significant figures

          ΔL = 3.82 10⁻⁴ m

5 0
3 years ago
A student pushes on a crate with a force of 100 Newtons directed to the right.
romanna [79]

Answer:

100N

Explanation:

Newton's third law of motion

For every action, there is an equal and opposite reaction.

Therefore 100N of force is exerted by the crate on student as a reaction to his action

6 0
3 years ago
A bus is moving in astraight line at speed of 25m/s. What time does bus take to cover 5 km
WARRIOR [948]

Answer:

Kinematics

given,

time (t)=100 s, distance (s)=1 km=1000 m

V

b

=10m/s (relative speed r.p to bus)

Velocity (v)=

time

distance

=

100

1000

V

s

= velocity of scooter

V

b

→ Velocity of bus

V=V

s

−V

b

→As we know

10=V

s

−10

20=V

s

V

s

=20 m/s

Velocity with which scooterist

should chase the bus →20 m/s

Explanation:

I Hope you Guys Understood

please mark as Brainliest....

5 0
3 years ago
Freeeee pointsssssss. i hope yall have a good as well!! Also, whats something you regret doing most?
leonid [27]

Answer:POGGERS thx i rl needed this have a good day also something a regret the most is searching up henhai i am now addicted

6 0
3 years ago
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What is the sun's thickest layer?<br>besides radiation zone?
makvit [3.9K]
Corona gas star is literally z thickest layer. hope it helped.
3 0
3 years ago
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