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3 years ago

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Two circular loop soft wires, each containing a single turn, have the same radius of 4.0 cm and a common center. The lanes of th

e loops are perpendicular. Each carries a current of 1.7 A. what is the magnitude of the net magnetic field at the common center?

1 answer:

zysi [14]3 years ago

6 0

Answer:

1

Explanation:

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A glider with mass m = 0.230 kg sits on a frictionless horizontal air track, connected to a spring with force constant k = 4.50

loris [4]

Answer

given,

mass of glider = 0.23 Kg

spring constant = k = 4.50 N/m

spring stretched to 0.130 m

The springs potential energy =

$U = \dfrac{1}{2}kx^2$

$U = \dfrac{1}{2}\times 4.5 \times 0.13^2$

U = 0.038 J

at x = 0,the only energy will be kinetic .

$\dfrac{1}{2}mv^2=0.038$

$\dfrac{1}{2}\times 0.23 \times v^2=0.038$

v² = 0.3304

v = 0.575 m/s

displacement of the glider

using conservation of energy

$\dfrac{1}{2}mv^2=\dfrac{1}{2}kx^2$

$x =v\sqrt{\dfrac{m}{k}}$

$x =3\times \sqrt{\dfrac{0.23}{4.5}}$

x = 0.678 m

8 0

3 years ago

Capacitors Cy= 220 pF and C= 470 uF are connected each across a 60 V electric potential difference. What is the total charge, Qt

Bumek [7]

Explanation:

Look, if you want to connect the capacitors parallel which the question wants you to do so, first

C1+C2=Ct

0.22μF+470μF

470.22μF

then you got the formula

C=Q/V===> Qt=CV===>

470.22×10‐⁶×60= do the calculations and it's yours

4 0

3 years ago

What net force is necessary to give a 2 kg mass that is initially at rest an acceleration of 5 m/s2?

QveST [7]

Answer:

<h2>10 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 2 × 5

We have the final answer as

<h3>10 N</h3>

Hope this helps you

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3 years ago

The Curiosity rover now on Mars analyzed rocks and found magnesium to have the following isotopic composition.

emmasim [6.3K]

Answer:

A. number of neutrons of Magnesium Mg = 13

B. The average mass of Mg = 22.29 amu

C. the magnesium composition on Mars is not the same as that on Earth.

Explanation:

Isotopes are atoms with the same atomic number but different mass number. This is due to the difference in mass of the neutrons.

The atomic number of Magnesium Mg = 12

The atomic number of an element is the number of protons present in the atomic nucleus of the element

i.e Atomic number = number of protons = 12

The mass number of an element is the sum of the protons and neutrons in the atomic nucleus of the element.

Mass number = number of protons + number of neutrons

Given that the mass number of Mg = 25

Then;

25 = 12 + number of neutrons

25 - 12 = number of neutrons

13 = number of neutrons

number of neutrons of Magnesium Mg = 13

B. What is the average atomic mass of magnesium in these rocks?

The average atomic mass of an element which exhibit isotopy is the average mass of its various isotopes as they occur naturally in any quantity of the element.

Therefore the average atomic mass of magnesium can be calculated as:

= $\mathtt{\dfrac{(23.9872 \times 79.70) + ( 24.9886 \times 10.13) + (25.9846 \times 10.17) }{79.7 + 10.13 +10.17}}$

= $\mathtt{\dfrac{(1911.77984) + ( 53.134518) + (264.263382) }{100}}$

= $\mathtt{\dfrac{2229.17774 }{100}}$

The average mass of Mg = 22.29 amu

C. Is the magnesium composition on Mars the same as that on Earth? Explain.

The average atomic weight of magnesium on Earth is said to be 24.305 amu while that of Mars is 22.29 amu.

There difference in the average atomic weight result into difference in their composition. Therefore,the magnesium composition on Mars is not the same as that on Earth.

7 0

3 years ago

A powerful motorcycle can accelerate from rest to 24.8 m/s (55 mi/h) in only 5.90 s. (a) What is its average acceleration in m/s

mel-nik [20]

Answer

given,

initial speed,u = 0 m/s

final speed,v = 24.8 m/s

time, t= 5.9 s

a) acceleration,

$a=\dfrac{v-u}{t}$

$a=\dfrac{24.8 - 0}{5.9}$

a = 4.20 m/s²

b) distance to travel in that time

using equation of motion

v² = u² + 2 as

24.8² = 0² + 2 x 4.20 x s

8.4 s = 615.04

s = 73.22 m

the motorcycle will travel 73.22 m

6 0

4 years ago