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1 year ago

In empty space, which quantity is always larger for x-ray radiation than for a radio wave?.

Physics

1 answer:

galben [10]1 year ago

4 0

In empty space, the quantity is always larger for x-ray radiation than for a radio wave is frequency.

<h3>How does X-ray radiation work?</h3>

X-rays are an electromagnetic radiation type that resembles visible light. However, x-rays have a higher energy than light and can penetrate most solid materials, including the human body. Images of the tissues and structures inside the body are created using medical x-rays.

The radiation you receive during an X-ray typically equals between a few days and a few years of exposure to naturally occurring radiation from the environment. The danger of developing cancer many years or decades after being exposed to X-rays exists, but it is regarded to be very low.

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What are the components of a vector with a magnitude of 4.00 and a direction of -112°?

zzz [600]

Answer: (-1.50 -3.71)

Explanation:

4 0

3 years ago

A shopping cart with two nice kids, rolls off a horizontal roof ledge that is 50

Alisiya [41]

Answer:

9.39 m/s

Explanation:

Using the y-direction, we can solve for the time t it takes for the cart to reach the ground.

Assume the up direction is positive and the down direction is negative.

v₀ = 0 m/s
a = -9.8 m/s²
Δy = -50 m
t = ?

Find the constant acceleration equation that contains these four variables.

Δy = v₀t + 1/2at²

Substitute known values into this equation.

-50 = (0)t + 1/2(-9.8)t²

Multiply and simplify.

-50 = -4.9t²

Divide both sides of the equation by -4.9.

10.20408163 = t²

Square root both sides of the equation.

t = 3.194382825

Now we can use this time t and solve for v₀ in the x-direction. Time is most often our link between vertical and horizontal components of projectile motion.

List out known variables in the x-direction.

v₀ = ?
t = 3.194382825 s
a = 0 m/s²
Δx = 30 m

Find the constant acceleration equation that contains these four variables.

Δx = v₀t + 1/2at²

Substitute known values into the equation.

30 = (v₀ · 3.194382825) + 1/2(0)(3.194382825)²

Multiply and simplify.

30 = v₀ · 3.194382825

Divide both sides of the equation by 3.194382825.

v₀ = 9.391485505

The cart was rolling at a velocity of 9.39 m/s (initial velocity) when it left the ledge.

8 0

3 years ago

Read 2 more answers

During a race, a runner runs at a speed of 6 m/s. Four seconds later, she is running at a speed of 14 m/s. What is the runner's

DedPeter [7]

Answer:

D. 2 m/s²

Step-by-step explanation:

Initial speed of the runner (u) = 6 m/s

Final speed of the runner (v) = 14 m/s

Time taken (t) = 4 s

By using equation of motion, we get:

$\bf \longrightarrow v = u + at \\ \\ \rm \longrightarrow 14 = 6 + 4a \\ \\ \rm \longrightarrow 14 - 6 = 6 - 6 + 4a \\ \\ \rm \longrightarrow 8 = 4a \\ \\ \rm \longrightarrow 4a = 8 \\ \\ \rm \longrightarrow \dfrac{4a}{4} = \dfrac{8}{4} \\ \\ \rm \longrightarrow a = 2 \: m {s}^{ - 2}$

$\therefore$ Acceleration of the runner (a) = 2 m/s²

3 0

3 years ago

A rock is dropped from a 134-m-high cliff. how long does it take to fall (a) the first 67.0 m and (b) the second 67.0 m?

____ [38]

A rock is dropped from a 100-m-high cliff. How long do the first 50 meters and the second 50 meters take to fall?

(a) The first 50 meters:

h1 = 0.5 x a x t12

50 m = 0.5% x 9.8% x t12

t1 = 3.19 s

50 meter fall time equals 3.19 seconds.

(a) Counting all 100 meters:

h2 = 0.5 x a x t22

100 m = 0.5% x 9.8% x t22

t2 = 4.52 s

Time to fall 50 meters is equal to t2 - t1 = 1.33 s.

<h3>What is meter?</h3>

The Earth's circumference is around 40000 km, according to the original definition of the metre in 1793, which was one ten-millionth of the distance between the equator and the North Pole on a great circle. The metre was redefined in 1799 using a model metre bar (the actual bar used was changed in 1889). The definition of the metre in terms of a certain number of wavelengths of a specific krypton-86 emission line was made in 1960.

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4 0

2 years ago

At t = 0 the components of a radio-controlled car's velocity are vx = 0.5 m/s and vy = 1.2 m/s. Find the components of the car's

FinnZ [79.3K]

Answer:

x-component of velocity = 5.7 m/s

y-component of velocity = -1.4 m/s

Explanation:

Use first equation of motion to find components of velocity at a given time: