All categories

3 years ago

How does the current change if the resistance is doubled?

Physics

1 answer:

finlep [7]3 years ago

7 0

The current will be divided by 2

You might be interested in

A 1.20 m wire has a mass of 6.80 g and is under a tension of 120 N. The wire is held rigidly at both ends and set into oscillati

swat32

Answer:

145.52137 m/s

1.4 m

0.7 m

60.6339 Hz

121.2678 Hz

Explanation:

T = Tension = 120 N

$\mu$ = Linear density = $\frac{m}{L}$

m = Mass of wire = 6.8 g

L = Length of wire = 1.2 m

n = Number of loops

Velocity is given by

$v=\sqrt{\frac{T}{\mu}}\\\Rightarrow v=\sqrt{\frac{T}{\frac{m}{L}}}\\\Rightarrow v=\sqrt{\frac{120}{\frac{6.8\times 10^{-3}}{1.2}}}\\\Rightarrow v=145.52137\ m/s$

The speed of waves on the wire is 145.52137 m/s

Wavelength is given by

$\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{1}\\\Rightarrow \lambda=1.4\ m$

The wavelength of the waves that produces one-loop standing waves is 1.4 m

$\lambda=\frac{2L}{n}\\\Rightarrow \lambda=\frac{2\times 1.2}{2}\\\Rightarrow \lambda=0.7\ m$

The wavelength of the waves that produces two-loop standing waves is 0.7 m

Frequency is given by

$f=\frac{nv}{2L}\\\Rightarrow f=\frac{1\times 145.52137}{2\times 1.2}\\\Rightarrow f=60.6339\ Hz$

The frequency of the waves that produces one-loop standing waves is 60.6339 Hz

$f=\frac{nv}{2L}\\\Rightarrow f=\frac{2\times 145.52137}{2\times 1.2}\\\Rightarrow f=121.2678\ Hz$

The frequency of the waves that produces two-loop standing waves is 121.2678 Hz

4 0

3 years ago

Planets are constantly moving. In fact, the name planet means wanderer. What force is responsible for the constant movement of t

iVinArrow [24]

The sun dictates the direction of leaves and the direction that the plant will grow towards.

4 0

3 years ago

Read 2 more answers

A 2.80 kg mass is dropped from a

inn [45]

Answer:

PE = 82.32J

Explanation:

PE = m*g*h

PE = 2.80kg*9.8m/s²*3m

PE = 82.32J

7 0

2 years ago

Read 2 more answers

Urgently!

adelina 88 [10]

Answer:

0.003333 s to 0.000125s or from 3.33ms to 0.125ms wher m is for milli

1.1m to 0.04125 m

Explanation:

T= 1/f=

if f= 300Hz then T = 1/300 =0.003333 s

if f= 8000 then T= 1/8000 = 0.000125s

now v=f×wave length

or wavelength = speed/ frequency

when f = 300 Hz

wavelength = 330/300=1.1 m

wavelength = 330/8000 = 0.04125m

note : i have taken speed of sound as 330 m/s you can take any value given in between 330m/s to 340m/s

6 0

2 years ago

Supercells are updrafts that may cause which of the following?

ale4655 [162]

just for anyone looking for the answer i just took the test and the answer is tornadoes

6 0

3 years ago