Answer:
It's A
Explanation:
sound waves are longitudinal they need a medium to travel through
ANSWER:
C
EXPLANTION:
The earths crust is the toppest layer of Earth, so that elimates option A and B.
FUN FACT:
Earth is Mostly Iron, Oxygen and Silicon
I’m so sorry if this is wrong, but I hoped help.
Have a nice day :3
Answer: Direct current is used in any electronic device with a battery for a power source. It is also used to charge batteries, so rechargeable devices like laptops and cell phones come with an AC adapter that converts alternating current to direct current
Explanation:
Answer:
The electric current through the resistor is: 7.66667 milliamps
Explanation:
Applying Ohm's law we have or solving to so now, we can replace the values given before in the equation, we need to know that the voltage across the resistor is which determine the current in the component, in this case, the resistor. After clear this topic, we get so 1 milliamps is 0,001 amps we get 7,66667 milliamps.
Answer:
The two space stations are 644.1653 miles far apart.
Explanation:
The distance of Huston and the International Space Station is 323 miles.
The distance of Huston and the Chinese space station Tiangong is 462 miles.
Angle between the two stations = 109⁰
So, applying the law of cosines as;
c² = a² + b² - 2abcosC
From the picture shown below, a = 323 miles and b = 462 miles
So,
c² = 323² + 462² + 2(323)(462)cos109 = 104329 + 213444 - 298452cos109
cos109 = -0.3256
So,
c² = 414948.9712
<u>c = 644.1653 miles</u>