A. A control group is given the experimental treatment.
Answer:
2 minutes or 120 seconds
Explanation:
The answer is 2 minutes or 120 seconds because 36 km is 36000 m and 36000 divided by 300 is 120, so the answer is 120 seconds, and converted to 2 minutes. Hope it helps!
Answer:
♕ ![\large{ \red{ \tt{Step - By - Step \: Explanation}}}](https://tex.z-dn.net/?f=%5Clarge%7B%20%5Cred%7B%20%5Ctt%7BStep%20-%20By%20-%20Step%20%5C%3A%20Explanation%7D%7D%7D)
☃ ![\underline{ \underline{ \blue{ \large{ \tt{G \: I \: V \: E\: N}}}}} :](https://tex.z-dn.net/?f=%20%5Cunderline%7B%20%5Cunderline%7B%20%5Cblue%7B%20%5Clarge%7B%20%5Ctt%7BG%20%5C%3A%20I%20%5C%3A%20V%20%5C%3A%20E%5C%3A%20N%7D%7D%7D%7D%7D%20%3A%20)
- Frequency ( f ) = 7 Hertz
- Wavelength ( λ ) = 42m
♨ ![\underline {\underline{ \orange{ \large{ \tt{T \: O \: \: F \: I \: N\: D}}}} }:](https://tex.z-dn.net/?f=%20%5Cunderline%20%7B%5Cunderline%7B%20%5Corange%7B%20%5Clarge%7B%20%5Ctt%7BT%20%5C%3A%20O%20%5C%3A%20%20%5C%3A%20F%20%5C%3A%20I%20%5C%3A%20N%5C%3A%20D%7D%7D%7D%7D%20%7D%3A%20)
☄ ![\underline{ \underline{ \large{ \pink{ \tt{S\: O \: L \: U \: T\: I \: O \: N}}}}}:](https://tex.z-dn.net/?f=%5Cunderline%7B%20%5Cunderline%7B%20%5Clarge%7B%20%5Cpink%7B%20%5Ctt%7BS%5C%3A%20O%20%5C%3A%20L%20%5C%3A%20U%20%5C%3A%20T%5C%3A%20I%20%5C%3A%20O%20%5C%3A%20N%7D%7D%7D%7D%7D%3A%20)
✧ ![\red{ \boxed{ \large{ \purple{ \sf{Wave \: velocity(v) = Frequency(f) \times Wavelength(λ)}}}}}](https://tex.z-dn.net/?f=%20%5Cred%7B%20%5Cboxed%7B%20%5Clarge%7B%20%5Cpurple%7B%20%5Csf%7BWave%20%5C%3A%20velocity%28v%29%20%3D%20Frequency%28f%29%20%5Ctimes%20Wavelength%28%CE%BB%29%7D%7D%7D%7D%7D)
~Plug the known values and then multiply!
↦ ![\large{ \tt{7 \times 42}}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Ctt%7B7%20%20%5Ctimes%2042%7D%7D)
↦ ![\boxed{ \boxed{ \large{ \bold{ \tt{294 \: m {s}^ {- 1} }}}}}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%20%5Cboxed%7B%20%5Clarge%7B%20%5Cbold%7B%20%5Ctt%7B294%20%5C%3A%20m%20%7Bs%7D%5E%20%7B-%201%7D%20%7D%7D%7D%7D%7D)
☥ ![\large{ \boxed{ \boxed{ \large{ \tt{Our \: Final \: Answer : \underline{ \large{ \tt{294 \: m {s}^{ - 1}}}}}}}}}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Cboxed%7B%20%5Cboxed%7B%20%5Clarge%7B%20%5Ctt%7BOur%20%5C%3A%20Final%20%5C%3A%20Answer%20%3A%20%20%5Cunderline%7B%20%5Clarge%7B%20%5Ctt%7B294%20%5C%3A%20m%20%7Bs%7D%5E%7B%20-%201%7D%7D%7D%7D%7D%7D%7D%7D%7D%20)
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❁ ![\underline{ \large{ \red{ \tt{D\: E\: T \: A \: I \: L\: E \: D \: \: I\: N \: F \: O}}}} :](https://tex.z-dn.net/?f=%20%5Cunderline%7B%20%5Clarge%7B%20%20%5Cred%7B%20%5Ctt%7BD%5C%3A%20E%5C%3A%20T%20%5C%3A%20A%20%5C%3A%20I%20%5C%3A%20L%5C%3A%20E%20%5C%3A%20D%20%5C%3A%20%20%5C%3A%20I%5C%3A%20N%20%5C%3A%20F%20%5C%3A%20O%7D%7D%7D%7D%20%3A%20)
- Frequency ( f ) : The number of complete waves , set up in a medium in one second is called frequency of the wave. The SI unit of frequency is Hertz ( Hz ). For example : if a sound wave completes 15 compressions and 15 rarefactions in one second , it's frequency is 15 Hz.
- Wavelength ( λ ) : The distance between two consecutive troughs or crests in a transverse wave or the distance between two consecutive compressions or rarefactions in a longitudinal wave us called wavelength. It is the distance travelled by a wave in a time equal to it's time period. It's SI unit is metre ( m ).
- Wave velocity ( v ) : The velocity with which a wave propagates in a medium is called wave velocity. It's SI unit is m/s.
# KILL : Excuses
KISS : Opportunities
MARRY : Goals
♪ Hope I helped! ♡
☂ Have a wonderful day / night ! ツ
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<u>Answer:</u>
W is the correct answer.
<u>Explanation:</u>
Since the charges are negative the forces acting is repulsive.
The left -4C charge repulse -3C, the force is shown in figure given as F2
The right -4C charge repulse -3C, the force is shown in figure given as F1
Since the charge magnitudes are same the magnitude of F1 and F2 are same, but their direction is different. From second figure we can see the angle between forces and W is 30⁰.
On resolving vectors the force along Z = F1 sin 30 and force along X = F2 sin 30
Since magnitudes are same they cancel each other.
Force along W = F1 cos 30 + F2 cos30 = 2Fcos 30 (Say F1 = F2 = F)
So net force is directed towards Z.