Ask question

Ask question

All categories

WINSTONCH [101]

1 year ago

10

find the work required to move an object in the force field f along the straight line from a(0,0,0) to b(,,). check to see wheth

er the force is conservative.

1 answer:

leva [86]1 year ago

6 0

Answer:

<u>0.099</u>

Explanation:

You might be interested in

Batteries are rated in terms of ampere-hours (A·h). For example, a battery that can produce a current of 2.00 A for 3.00 h is ra

Reptile [31]

(a) 423 J

The power of the battery is the ratio between the total energy stored (E) and the time elapsed (t):

$P=\frac{E}{t}$

However, the power is also the product of the voltage (V) and the current (I):

$P=VI$

Linking the two equations together,

$\frac{E}{t}=VI\\E=VIt$

Since we know:

V = 9.0 V

$I \cdot t = 47.0 A\cdot h$

We can calculate the total energy:

$E=(9.0 V)(47 A \cdot h)=423 J$

(b) $7.79\cdot 10^{-6}$ dollars

The battery has a total energy of E = 423 J. (2)

1 Watt (W) is equal to 1 Joule (J) per second (s):

$1 W = \frac{1 J}{1 s}$

so 1 kW corresponds to 1000 J/s:

$1 kW = \frac{1000 J}{1 s}$

Multiplying both side by 1 hour (1 h):

$1 kW \cdot h = \frac{1000 J}{1 s} 1 h$

and $1 h = 3600 s$ , so

$1 kWh = \frac{1000 J}{1 s}\cdot 3600 s =3.6\cdot 10^6 J$

So we find the conversion between kWh and Joules. So now we can convert the energy from Joules (2) into kWh:

$1 kWh = 3.6\cdot 10^6 J = x : 423 J\\x=\frac{1 kWh \cdot 423 J}{3.6\cdot 10^6 J}=1.18\cdot 10^{-4}kWh$

And since the cost is $0.0660 per kilowatt-hour, the total cost will be

$C=$0.0660\cdot 1.18\cdot 10^{-4} kWh=7.79\cdot 10^{-6}$ dollars

6 0

4 years ago

H-2 + H-3 → He-4 +

Svetach [21]

D)
<span>No. the products include He-4, one neutron, and energy.</span>

6 0

3 years ago

Read 2 more answers

Nickel has a face-centered cubic structure and has a density of 8.90 g/cm3. what is its atomic radius?

vitfil [10]

Density = (mass/volume)

<span>Mass = # atoms (in unit cell) x (mol / 6.022 x 10^23 atoms) x (58.69 g/mol) </span>
<span>The last number is the atomic mass of nickel </span>

<span>The number of atoms = 8(1/8) + 6(1/2) = 4

</span>The volume (of the entire unit cell) = side^3 = (r x 8^(1/2))^3

<span>6.84 g/cm3 = [4 atoms x (mol / 6.022 x 10^23 atoms) x (58.69 g/mol)] / [r x 8^(1/2)]^3
</span>
<span> r = 1.36 x 10^-8 cm</span>

8 0

3 years ago

Read 2 more answers

1. Your 15-year-old daughter, Fatamorgana, has been ill for 3 days with a fever, lassitude, anorexia, sore anus and elbows, and

aksik [14]

Answer:

C

Explanation:

because is something else you need from medicine

8 0

3 years ago

A red apple reflects ______<br> light and absorbs all other<br> colours.

trasher [3.6K]

<em>A red apple reflects</em> <u>Red</u> <em>light and absorbs all</em> <em>other colours.</em>

4 0

3 years ago