3 years ago

The universal force that is effective over the longest distance is called?

Physics

1 answer:

gulaghasi [49]3 years ago

3 0

The answer is D. gravity

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When an RL circuit is connected to a battery, which is true about its initial and final states?

zubka84 [21]

Answer:A

Explanation:

In R-L circuit current is given by

$i=i_0\left [ 1-e^{\frac{-t}{L/R}}\right ]$

where i=current at any time t

$i_0=maximum\ current$

R=resistance

L=Inductance

at t=0 $e^{\frac{-t}{L/R}}$ approaches to 1

therefore $i=i_0\left [ 1-1\right ]$

i=0

when t approaches to $\infty$ , $e^{\frac{-t}{L/R}}$ approaches to zero

thus $i=i_0$

thus we can say that initially circuit act as broken wire with zero current

and it increases exponentially with time and act as ordinary connecting wire

7 0

3 years ago

Listed in the Item Bank are individual steps that need to be ordered. To find out more information about steps, some have more d

lapo4ka [179]

Answer:

radio

microwave

Infrared

Visible

Ultraviolet

X-ray

Gamma ray

I hope this helps you a little bit

8 0

3 years ago

How many significant figures are in 246.32

muminat

Answer:5

Explanation:

Decimal :2

Significant notation :2.4632× 10^2

8 0

3 years ago

It has been proposed that extending a long conducting wire from a spacecraft (a "tether") could be used for a variety of applica

denis23 [38]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The angle between shuttle's velocity and the Earth's field is $\theta = 24.2^o$

Explanation:

From the question we are told that

The length of eire let out is $L = 250 \ m$

The emf generated is $\epsilon = 40 V$

The earth magnetic field is $B = 5.0 *10^{-5} T$

The speed of the shuttle and tether is $v = 7.80 * 10^3 \ m/s$

The emf generated is mathematically represented as

$\epsilon = L\ v\ B\ sin \ \theta$

making $\theta$ the subject of the formula

$\theta = sin ^{-1}[ \frac{\epsilon}{L * B *v} ]$

substituting values

$\theta = sin ^{-1}[ \frac{40}{250 * (5*10^{-5}) *(7.80 *10^{3})} ]$

$\theta = 24.2^o$

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3 years ago

A 62.2 kg woman lifts herself 31.8 cm each time she does a chin-up. What force does she exert in lifting herself to the chin pos

RideAnS [48]

Answer:31

Explanation:

8 0

2 years ago