Answer:
The total momentum of the cat and the dog is, p = 2.4 kg m/s
Explanation:
Given,
The mass of the cat, m = 800 g
= 0.800 kg
The mass of the dog, M = 1000 g
= 1 kg
The velocity of the cat taken positive x direction, v = 8 m/s
The velocity of the dog, V = - 4 m/s
The momentum of the body is defined as the product of its mass and velocity.
p = mv
The momentum of the cat,
p₁ = 0.8 x 8
= 6.4 kg m/s
The momentum of the dog,
p₂ = MV
= 1 x -4
= -4 kg m/s
The total momentum,
p = p₁ + p₂
= 6.4 + (-4)
= 2.4 kg m/s
Hence, the total momentum of the cat and the dog is, p = 2.4 kg m/s
Answer:
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Answer:
Net force is 7N, accelerations is 3.5 m/s/s
Explanation:
Answer:
5.4 cm³
Explanation:
Ideal gas law:
PV = nRT
where P is absolute pressure, V is volume, n is number of moles, R is ideal gas constant, and T is absolute temperature.
Since n and R are constant, we can say:
PV / T = constant
At the bottom of the lake, the pressure is:
P = ρgh + Patm
P = (1000 kg/m³) (9.8 m/s²) (40.5 m) + 101,325 Pa
P = 498,225 Pa
And the temperature is:
T = 2.3 + 273.15 K
T = 275.45 K
At the top of the lake, the pressure is:
P = Patm
P = 101,325 Pa
And the temperature is:
T = 28.1 + 273.15 K
T = 301.25 K
Therefore:
PV / T = PV / T
(498225 Pa) (1.00 cm³) / (275.45 K) = (101325 Pa) V / (301.25 K)
V = 5.4 cm³
Answer:
Hello your question is incomplete hence I will give you a general answer on how A van de Graaff generator works
answer :
If the electrons falls through a PD of 150mV the electron will gain energy of 150MeV
Explanation:
when a Van de Graff generator is used to accelerate an electron through a PD ( potential difference ) of any value the particle ( electron ) the electron will gain energy ( eV ) which is is equivalent in value of the PD it accelerated through
hence if the electrons falls through a PD of 150mV the electron will gain energy of 150MeV