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ddd [48]
3 years ago
14

In which position are the earth, moon, and sun during a full moon?

Physics
1 answer:
Arte-miy333 [17]3 years ago
5 0

Answer:

The answer is B, although technically that is an eclipse.

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2.10-kg box is moving to the right with speed 8.50 m>s on a horizontal, frictionless surface. At t = 0 a horizontal force is
larisa86 [58]

Explanation:

Below is an attachment containing the solution.

8 0
3 years ago
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Bumek [7]

Answer:

The thirds option

Explanation:

3 0
2 years ago
If a tank contains water 4 m deep, what is the pressure at the bottom of the tank? (Neglect the atmospheric pressure.)
makkiz [27]

Given:

Water 4 m deep

Required:

Pressure at the bottom of the tank

Solution:

p2 – p1 = gh

p2 – p1 = p = gh

p = gh = 1000kg/m3 (9.8m/s2)(4m)

<span>p = 39200 Pa</span>

6 0
3 years ago
A)A certain medical machine emits x-rays with a minimum wavelength of 0.024 nm. One day, the machine has an electrical problem a
oee [108]

Answer:

(a) 0.032 nm

(b) 39,235 eV

(c) 70,267.8 eV

Explanation:

(a) The energy of a photon can be calculated using:

E = hc/λ                  equation (1)

where:

h = 4.13*10^-15 eV.s

c = 3*10^8 m/s

λ = 0.024*10^-9 m

Thus:

E = (4.13*10^-15)*(3*10^8)/0.024*10^-9 = 51,625 eV

Then we calculate 76% of this estimated energy and determine the new wavelength:

E_{new} = 0.76*51625 = 39,235 eV

Using equation (1) to determine the new wavelength:

λ_{new} = \frac{h*c}{E_{new} }

λ_{new} = (4.13*10^-15)*(3*10^8)/39235 = 3.15*10^-11 m = 0.032 nm

(b) As calculated in part (a), the maximum x-ray energy this machine can produce is E_{new} = 0.76*51625 = 39,235 eV

(c)  The energy of a Ka x-ray photon can be estimated using:

E_{ka} = (10.2 eV)*(Z-1)^{2}

where Z is the atomic number = 84.

E_{ka} = (10.2 eV)*(84-1)^{2} = 70,267.8 eV

4 0
3 years ago
A proton moves with a speed of 4.00 106 m/s horizontally, at a right angle to a magnetic field. What magnetic field strength is
Free_Kalibri [48]

Answer:

Magnetic field, B=2.55\times 10^{-14}\ T

Explanation:

It is given that,

Speed of proton, v=4\times 10^6\ m/s

Mass of the proton, m=1.67\times 10^{-27}\ kg

Charge on proton, q=1.6\times 10^{-19}\ C

We need to find the magnetic field strength required to just balance the weight of the proton and keep it moving horizontally.

The Lorentz force is given by :

F=q(v\times B)=qvB\ sin90.............(1)

The weight of proton,

W=mg..............(2)

From equation (1) and (2), we get :

mg=qvB

B=\dfrac{mg}{qv}

B=\dfrac{1.67\times 10^{-27}\ kg\times 9.8\ m/s^2}{1.6\times 10^{-19}\ C\times 4\times 10^6\ m/s}

B=2.55\times 10^{-14}\ T

Hence, this is the required solution.

3 0
2 years ago
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