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xeze [42]
3 years ago
7

Evan drew a diagram to illustrate radiation. What do the arrows represent? gases mixing with particles liquid moving through a v

acuum moving particles electromagnetic waves
Physics
2 answers:
sattari [20]3 years ago
7 0

its D. electromagnetic waves.

julsineya [31]3 years ago
4 0
I am pretty sure the answer is d
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A 500 kg object is hanging from a spring attached to the ceiling. If the spring constant in the spring is 900 N/kg, how far does
My name is Ann [436]

We are given that a 500 kg object is hanging from a spring. To determine the amount the spring is stretched we will use Hook's law, which states the following:

F=kx

Where:

\begin{gathered} F=\text{ force} \\ k=\text{ spring constant} \\ x=\text{ distance stretched} \end{gathered}

Since the object is hanging the only force acting on the spring is the weight of the object. The weight of the object is:

F_g=mg

Where:

\begin{gathered} m=\text{ mass} \\ g=\text{ acceleration of gravity} \end{gathered}

Plugging in the values we get:

F_g=(500\operatorname{kg})(9.8\frac{m}{s^2})

Solving the operations:

F_g=4900N

Now we solve for "x" from Hook's law by dividing both sides by "k":

\frac{F}{k}=x

Now we plug in the known values:

\frac{4900N}{900\frac{N}{m}}=x

Solving the operations:

5.4m=x

Therefore, the spring is stretched by 5.4 meters.

7 0
1 year ago
Johnny was playing baseball with his friends and they noticed a bolt of lightning. They heard thunder seven seconds later. How f
denis-greek [22]
The storm would be at least 7 miles away cause light travels faster than sound and you can tell how many miles away a lightning bolt might have hit by how long it takes the thunder to strike<span />
4 0
3 years ago
A child is thrown horizontally from a 45m tall tower with a velocity of 7m/s.
lesya692 [45]
The child is thrown for 7 seconds
7 0
3 years ago
When you graph the motion of an object, you put _____ on the horizontal X axis and ____ on the vertical Y axis
wel
It depends upon the type of graph that you are talking about,

If the graph is Velocity - Time graph, then time lies on the X axis and speed on the Y axis.

If it is Distance - Time graph, the time lies on the X axis and distance on the Y axis.

But generally, it is ALWAYS TIME IN THE ‘X’ AXIS AND DISTANCE ON THE ‘Y’ AXIS.

Let me know if you have any doubts by either commenting or messaging me
7 0
3 years ago
Find the deBroglie wavelength of an electron with 4.0 eV.
pantera1 [17]

Explanation:

It is given that,

Voltage, V=4 eV=4\times 1.6\times 10^{-19}\ V= 6.4\times 10^{-19}\ V

De broglie wavelength in terms of voltage is given by :

\lambda=\dfrac{h}{\sqrt{2meV} }

m and e are the mass and charge on electron. So,

\lambda=\dfrac{12.27}{\sqrt{V} }\ A

\lambda=\dfrac{12.27}{\sqrt{6.4\times 10^{-19}} }\ A  

\lambda=1.53\times 10^{10}\ A

\lambda=1.53\ m

So, the De broglie wavelength of an electron is 1.53 meters. Hence, this is the required solution.      

3 0
3 years ago
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