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4 years ago

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.

7 0

3 years ago