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seropon [69]
2 years ago
11

A small ball with a mass of 0.6 kg and a velocity of 12 m/s hits another ball with the same mass. The firs forward and hits a th

ird ball with a mass of 0.2 kg. If the system is closed, what is the velocity of the third ball?
4 m/s

36 m/s

30 m/s

1.44 m/s​
Physics
1 answer:
Ket [755]2 years ago
8 0
I think is 30m/s I am not sure
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What is the current in a 120V circuit if the resistance is 20Ω?
Kaylis [27]

We have: I=\frac{U}{R}=\frac{120}{20}=6A

ok done. Thank to me :>

6 0
2 years ago
How much heat is required to raise the temperature of 0.25 kg of water from 20°C to 30°C
pentagon [3]

Answer:

10500 J/kg/*C

Explanation:

Quantity of heat required=mass of substance x specific heat capacity x change in temperature

Quantity of heat required=0.25 x 4200 x [30-20]

Quantity of heat required=0.25 x 4200 x 10

Quantity of heat required=10500 J/kg/*C

3 0
3 years ago
Can you go around a curve with zero acceleration? Explain​
Serjik [45]
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6 0
3 years ago
Air exits a turbine at 200 kPa and 1508C with a volumetric flow rate of 7000 liters/s. Modeling air as an ideal gas, determine t
liraira [26]

Answer:

mass flow rate = 11.464 kg/sec

Explanation:

given data

P = 200 kPa = 2 × 10^{5}  Pa

temperature = 150°C  = 423 k

volumetric flow rate = 7000 liters/s

solution

first we get here molar flow rate that is express as

molar flow rate  = \frac{Pv}{RT}   .................1

put here value

molar flow rate  = \frac{2 \times 10^5 \times 7}{8.314\times 423}  

molar flow rate  = 398.06 mol/sec

and

now we get mass flow rate

mass flow rate = molar flow rate × average  mol weight ..............2

mass flow rate = 398.06 × 28.8

mass flow rate = 11464.3 g/sec

mass flow rate = 11.464 kg/sec

8 0
3 years ago
Differences between fundamental unit and derived unit (any two)​
ale4655 [162]

Answer:

<em>Fundamental units are the units of the fundamental physical quantities in SI system. They are not formed from other units. There are a total of seven fundamental units such as meter, kilogram, ampere, and second. Derived units are those units that are used for derived quanti</em>ties.

Explanation:

Hope it helps

6 0
3 years ago
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