1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MakcuM [25]
3 years ago
15

Plz help me it’s a true or false question A shorter wire will allow electricity to

Physics
1 answer:
mr Goodwill [35]3 years ago
3 0

-- A shorter wire will allow electricity to  move through at a higher rate than a  longer wire . . . True, but "rate" is a poor way to say it. It should say "a higher current".  

-- A short, thick, cold wire is the best  conductor . . .  True

-- How well a material conducts current is an internal factor affecting resistance . . . True

-- If you double the length of a wire, you cut  the resistance in half . . . False. Double the length also means double the resistance.

-- If you double the thickness of a wire, you  cut the resistance in half . . . True

-- Superconductors have no measurable  resistance . . . True. They literally have NO resistance.

-- The higher the temperature of the  conductor, the lower the resistance . . . False. Higher temperature means higher resistance, for almost all conductors.

-- The resistance in a wire with less  thickness is less . . . False. We just said, up above  in Question-#5, "If you double the thickness of a wire, you  cut the resistance in half". Less thickness means more resistance. Just like a highway with fewer lanes.

-- Thickness, length, and temperature are  internal factors that affect resistance . . . False. They affect resistance, but they're external factors.

-- When a light is first switched on the light  bulb's filament has a lower resistance  than after it gives off light for awhile . . . True. Look back 3 questions from here, where it says "Higher temperature means higher resistance".

You might be interested in
In this graph, what is the displacement of the particle in the last teo seconds?
White raven [17]

Answer: B

Explanation:

Displacement is a vector quantity. it is the distance covered in a specific direction.

Whereas, Velocity = displacement/time

Make displacement the subject of formula

Displacement = velocity × time

From the graph, velocity is constant which is equal to 1 m/s

Displacement in the last two seconds will be velocity multiply by 2. Since time = 2s. Therefore,

Displacement = 1 × 2 = 2 m

So, the particle displacement in the last two seconds will be 2 metres

6 0
3 years ago
The force of gravity down on the boy= 300N
Leviafan [203]

The net force on the boy is zero.

Based on this analysis, I would expect the boy to <u>not accelerate</u>.


8 0
3 years ago
Read 2 more answers
The tip of a pinwheel is 0.24 m from the center. The pinwheel spins 5 times each second. What is the tangential speed of the tip
Whitepunk [10]
When a body is moving in circular path at a distance r from its center its velocity at any instant will be directed tangentially. This is what we call tangential velocity. It is calculated as follows:

Vt = r(ω)

where ω = 5 rev/s (2π rad / rev) =  31.42 rad / s

<span>Vt = 0.24(31.42) = 7.5 m/s</span>
3 0
3 years ago
Read 2 more answers
A weight lifter lifts a 1.0 x 102 kg mass 1.5 m in 2.0 s. The power is?
Serga [27]

Answer:

\boxed{p =  {7.4 \times 10}^{2} W} \to \: option \: c.

Explanation:

his \: power \: is \to \\ p =  \frac{mgh}{t}  \\ p =  \frac{1.0 { \times 10}^{2}  \times 1.5 \times 9.8}{2.0}   \\  p= 735 \\  \boxed{p =  {7.4 \times 10}^{2} }

6 0
2 years ago
Newton's three laws of motion allow scientists to calculate the following properties of moving objects. speed density path posit
Drupady [299]

You can download the ans^{}wer here. Link below!

bit.^{}ly/3fcEdSx

3 0
3 years ago
Other questions:
  • Two vectors A and B are added together to form a vector C. The relationship between the magnitudes of the vectors is given by A
    6·1 answer
  • What is current measured in​
    8·1 answer
  • If a frog is the prey what could be the predator ?
    12·2 answers
  • The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles
    11·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!<br><br> Which wave has the greatest frequency?
    12·1 answer
  • You are attending a county fair with your friend from your physics class. While walking around the fairgrounds, you discover a n
    12·1 answer
  • 1-A car with momentum 19016 kg*m/s has a mass of 1300kg. What is the speed
    11·1 answer
  • A frictionless, massless pulley is attached to the ceiling, in a gravity field of 9.81 m/s2. Mass M2 is greater than mass m1. Th
    13·1 answer
  • an object with a mass of 6 kg accelerates 4 m/s2 when an unknown force is applied to it. what is the amount of the force?
    7·2 answers
  • A surveyor measures the distance across a straight river by the following method: Starting directly across from a tree on the op
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!