Answer:
150 cm³ = 0,000150m³
5.7 cm = 0.057 m
1.5 km = 1500 m
1.1g cm sorry id k this one
0.0145mm= 0.000145m
8.1kg/m³ = 8100g/m³
No chlorine will not react with potassium fluoride solution because chlorine reacts with water, forming HOCI and HCI. The only way for there to be a reaction when you add KF (Potassium Fluoride) to chlorine water is if there were any impurities in the water, even then it is doubtful that a color change would occur.
Answer:
11300 kgm3
Hope this helps
Answer:
120 km/hr
Explanation:
Let D be the distance between the rocket and the camera as the rocket is moving upwards. Let d be the distance the rocket moves and L be the distance between the camera and the base of the rocket = 4 km.
Now, at any instant, D² = d² + L²
= d² + 4²
= d² + 16 since the three distances form a right-angled triangle with the distance between the rocket and the camera as the rocket is moving upwards as the hypotenuse side.
differentiating the expression to find the rate of change of D with respect to time, dD/dt ,we have
d(D²)/dt = d(d² + 16)/dt
2DdD/dt = 2d[d(d)/dt]
dD/dt = 2d[d(d)/dt] ÷ 2D
Now d(d)/dt = vertical speed of rocket = 200 km/hr
dD/dt = 200d/D [D = √(d² + 16)]
dD/dt = 200d/[√d² + 16]
Now substituting d = 3 km, the distance the rocket has risen into the equation, we have
dD/dt = 200(3)/[√(3² + 16)]
dD/dt = 600/[√(9 + 16)]
dD/dt = 600/√25
dD/dt = 600/5
dD/dt = 120 km/hr
So, the speed at which the distance from the camera to the rocket changing when the rocket has risen 3 km is 120 km/hr.
Answer:
Both particles have zero velocity
Explanation:
Given;
mass of the first particle, m₁ = 11 kg
mass of the second particle, m₂ = 11 kg
initial velocity of the first particle, u₁ = 2 m/s
initial velocity of the second particle, u₂ = 2 m/s
final velocity of both particles after collision, v = ?
Apply the principle of conservation of linear momentum;
O----------------------> <------------------O
1st particle 2nd particle
m₁u₁ - m₂u₂ = v(m₁ + m₂)
11 x 2 - 11 x 2 = v( 11 + 11)
22 - 22 = v(22)
0 = 22v
v = 0/22
v = 0
The final velocity of both particles after collision is zero.
Thus, Both particles have zero velocity