3 years ago

Both X-rays and gamma rays have higher frequencies than ultraviolet rays True or False

Physics

2 answers:

Masja [62]3 years ago

8 0

I’m pretty sure the answer is true

mamaluj [8]3 years ago

7 0

Answer:

i believe its True

Explanation:

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Number 5 and 6 i need just give answer

sashaice [31]

Explanation:

voltage = current × resistance

12 V = 4.2 A × resistance

resistance = 12 V / 4.2 A = 2.857142857... Ohm

FYI :

4.2 A would be a lot for a small electronic device like a CD player. that would be 12×4.2 = 50.4 Watt, and the CD player would get really hot.

120 V = current × 12 Ohm

current = 120 V / 12 Ohm = 10 A

8 0

2 years ago

Calculate the volume of this regular solid.

My name is Ann [436]

Answer:

2144.66 cm³

Explanation:

the formula is

V= 4 /3πr³

= 4/3 × π × 8³

= 4/3 × π × 512

= 2144.66 cm³

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3 years ago

A slingshot is used to shoot a small ball upward into the air; when the pouch is released, the sling propels the ball upward. as

alexdok [17]

Explanation:

kinetic to gravitational

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3 years ago

A toroid having a square cross section, 5.49 cm on a side, and an inner radius of 18.1 cm has 450 turns and carries a current of

joja [24]

Answer:

(a) 4.27 x 10^-4 Telsa

(b) 3.28 x 10^-4 Telsa

Explanation:

side of square, a = 5.49 cm

inner radius, r = 18.1 cm = 0.181 m

number of turns,N = 450

current, i = 0.859 A

(a)

The magnetic field due to a solenoid due to inner radius is

$B = \frac{\mu_{0}Ni}{2\pi r_{inner}}$

$B = \frac{4\pi\times 10^{-7}\times 450\times 0.859}{2\pi \times 0.181}$

B = 4.27 x 10^-4 Telsa

(b)

The outer radius is R = 18.1 + 5.49 = 23.59 cm = 0.236 m

The magnetic field due to the outer radius is

$B = \frac{\mu_{0}Ni}{2\pi r_{outer}}$

$B = \frac{4\pi\times 10^{-7}\times 450\times 0.859}{2\pi \times 0.236}$

B = 3.28 x 10^-4 Tesla

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3 years ago

All ions are atoms with a

Cloud [144]

All ions are atoms with a charge

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3 years ago