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lesya692 [45]
3 years ago
11

To calculate how much rest energy an object contains, you multiply

Physics
1 answer:
Rina8888 [55]3 years ago
5 0
This is what e=mc² means.
So rest energy is RH side of equation that is its mass times speed of light squared.
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A rural mail carrier logged the mileage on the odometer at the start of the mail route as 31,500 miles. After 6.5 hours, the car
dusya [7]

Answer:32.77\ mi/hr

Explanation:

Given

Initially Reading on the odometer is 31,500\ miles

Final reading on the odometer is 31,713\ miles

Time taken is t=6.5\ hr

average velocity =\dfrac{\text{Displacement}}{\text{time}}

v_{avg}=\dfrac{31713-31500}{6.5}

v_{avg}=\dfrac{213}{6.5}

v_{avg}=32.77\ mi/hr

Thus the average velocity of mail truck is 32.77\ mi/hr

8 0
3 years ago
A solid element that is malleable' a good conductor of electricity, and reacts with oxygen is classified as a
Finger [1]
1) metal
Even though metalloids are also conductors of heat and electricity, malleable they are not as good as metals.
Metals are very good conductors of electricity and heat. They are also very hard to touch. Noble gases and non metals are the exact opposite in physical and chemical properties. Metals readily react with oxygen.
5 0
3 years ago
You have 2 objects flying towards you. One of them is havier with lower velocity and the other one is lighter but has higher vel
Lerok [7]

Answer: I would say the object with the Lower velocity because Lighter with Higher velocity makes it heavy, velocity is how heavy something is so the lighter it is the less difficult it will be to catch.

7 0
3 years ago
If the current in this circuit is 3 A, what must be the value of R3?<br><br><br>It's 5 Ω
Svetllana [295]

Explanation :

It is given that,

In the given figure all the three resistors are in series.

Current flowing in the circuit, I=3\ A

Voltage, V=30\ V

We know that in series circuit the current flowing in all resistors is same.

Using Ohm's law, we get:

V=IR

30\ V=3\ A(2\ \Omega+3\ \Omega+R_3)

R_3=5\ \Omega

Hence, this is the required solution.    

5 0
3 years ago
Read 2 more answers
A sound wave has a frequency of 425 hz. what is the period of this wave? 0.00235 seconds 0.807 seconds 425 seconds 850 seconds
77julia77 [94]

The period of the sound wave at the given frequency is determined as 0.00235 second.

<h3>Period of the sound wave</h3>

The period of the sound wave at the given frequency is calculated as follows;

Period is reciprocal of frequency.

T = 1/f

T = 1/425

T = 0.00235 second

Thus, the period of the sound wave at the given frequency is determined as 0.00235 second.

Learn more about period here: brainly.com/question/10428039

#SPJ1

3 0
2 years ago
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