The dark matter makes up the most of the solar system, which is around 95%
Answer:
2.8 m/s
Explanation:
Energy of a system cannot be destroyed . It can only be transfer to another form of energy.
when the pendulum is at rest in a height 0.4 m , it has a potential energy due to the height it is. but no kinetic energy since ni movement (velocity)
at the time it reach the lowest point of the path , we can say that it is in the minimum potential level , therefore it now does not have any potential energy , but has a kinetic energy
energy at rest = energy at lowest point
KE1 + PE1 = KE2 + PE2
0 + 1.5 * 9.8 *0.4=
V=√(2*9.8*0.4)
V = 2.8 m/s
Its true...water takes the shape of its container and it flows..please give me 5 stars and brainliest
Answer:
<em>20m/s</em>
Explanation:
Given
Velocity = 40m/s
angle = 30°
Vertical component = Vsin theta
Substitute into the formula
Vy = 40sin30
Vy = 40(0.5)
Vy = 20m/s
<em>Hence the vertical component of the velocity right before the ball hits the ground is 20m/s</em>
Intensity = power/ Area
⇒ Power absorbed = 1× A ⇒ 1.4 × 10∧3 ×(10)
= 14000 Watt = 14 kWatt
time - averaged intensity divided by speed of light in free space is the radiation pressure
P = (1.4 × 1000)/c
Force = pressure × area ⇒ ((1.4× 1000)/(10∧8)) × 10
= 0.00004666666N
0.000047N