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Alex777 [14]
4 years ago
12

What is the name of family for group one

Physics
1 answer:
Veronika [31]4 years ago
7 0
Alkali Metals is the name of group 1
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Math Practice: Cart A loaded with blocks (600g) moving left at 0.7m/s hits stationary cart B (200g).
Vika [28.1K]

Answer:

The velocity of cart B after the collision is 1.29 m/s.

Explanation:

We can find the velocity of cart B by conservation of linear momentum:

p_{i} = p_{f}

m_{A}v_{A_{i}} + m_{B}v_{B_{i}} = m_{A}v_{A_{f}} + m_{B}v_{B_{f}}

Where:

m_{A} is the mass of cart A = 600 g = 0.6 kg            

m_{B} is the mass of cart B = 200 g = 0.2 kg

v_{A_{i}} is the inital velocity of cart A = 0.7 m/s

v_{A_{f}} is the final velocity of cart A = 0.27 m/s

v_{B_{i}} is the initial velocity of cart B = 0

v_{B_{f}} is the final velocity of cart B =?

Taking the left direction as the positive horizontal direction:

0.6 kg*0.7 m/s + 0 = 0.6 kg*0.27 m/s + 0.2 kg*v_{B_{f}}

v_{B_{f}} = 1.29 m/s

                       

Therefore, the velocity of cart B after the collision is 1.29 m/s.

I hope it helps you!  

5 0
3 years ago
The SI units of mass density are kg/m3, but there are several other common units. One of the most commonly used units of mass de
gulaghasi [49]

Answer:

Explanation:

Given

mass of object m=59\ gm

Volume displaced V_d=827.5\ ml

According to Archimedes' principle buoyant force equals to weight of volume displace by an object.

Therefore Buoyant force F_b=\rho \times V_d\times g

where \rho =Density\ of\ water(1000\ kg/m^3)

g=acceleration due to gravity

substituting values

F_b=1000\times 0.8275\times 10^{-3}\times 9.8

F_b=8.109\ N                                                                    

3 0
4 years ago
Select the correct statement about the flow of power as a function of time between a balanced three-phase source and a balanced
Akimi4 [234]

Answer:

Total power flow in a balanced system is constant with time

Therefore, the torque required to a balance load is constant and the vibration is lessened

Explanation:

3 0
3 years ago
What kind of acceleration occurs when an object speeds up?.
stiks02 [169]

Answer:

positive

Explanation:

6 0
3 years ago
1. What are three questions you should ask before joining a club?
lara [203]

Answer:

what time does it start.

what do I need to join.

what are your expectations.

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