Answer:you use / this
Explanation: for exmp 1/4 x 1/9=
Answer:
Explanation:
We shall apply the formula for velocity in case of elastic collision which is given below
v₁ = (m₁ - m₂)u₁ / (m₁ + m₂) + 2m₂u₂ / (m₁ + m₂)
m₁ and u₁ is mass and velocity of first object , m₂ and u₂ is mass and velocity of second object before collision and v₁ is velocity of first velocity after collision.
Here u₁ = 22 cm /s , u₂ = - 14 cm /s . m₁ = 7.7 gm , m₂ = 18 gm
v₁ = ( 7.7 - 18 ) x 22 / ( 7.7 + 18 ) + 2 x 18 x - 14 / ( 7.7 + 18 )
= - 8.817 - 19.6
= - 28.4 cm / s
Answer:transverse- transfers energy perpendicular to the direction of the wave
Electromagnetic- dose not require a medium for transition
Mechanical - requires a medium for transmission
Longitudinal- transfers energy parallel to the direction of the wave
Explanation: just took the activity
An object like glass that allows light to pass through is said to refract light.
<h2>
PROPERTIES OF WAVES</h2>
Four general properties of waves are;
An object that allows light to pass through is said to refract light because of the followings
- If it absorbs, it will not transmit the light.
- If it reflect, some portion of the light will not be transmitted.
- Light refract when moving from one medium to another.
Therefore, An object like glass that allows light to pass through is said to refract light.
Learn more about Light waves here: brainly.com/question/25847009
You may look at what group they are in
Group
1A=Group 1
2A = Group 2
3A = Group 13
4A= Group 14
5A=Group 15
6A=Group 16
7A=Group 17
The #A tells you how many valence electrons there are by the # before A. Such as Chlorine, which is in 7A, so therefore has 7 valence electrons.