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andreev551 [17]
3 years ago
12

. Mass 1 has a momentum of 20 kg*m/s. Mass 2 has a momentum of 50 kg*m/s.

Physics
1 answer:
sesenic [268]3 years ago
3 0

Answer:

55kgm/s

Explanation:

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How do electric and magnetic fields interact in an electromagnetic wave?
kotegsom [21]

Answer:

Electric and magnetic field waves are oriented at 90 degree angles relative to each other.

Explanation:

8 0
3 years ago
From a lake, water is pumped at a rate of 67 L/s to a storage tank positioned 14 m above while consuming 16.4 kW of electrical p
LenaWriter [7]

Answer:

57 %

Explanation:

input power = 16.4 kW = 16.4 x 10^3 W = 16400 W

Water pumped per second = 67 L/s

Mass of water pumped per second, m = Volume of water pumped epr second x density of water

m = 67 x 10^-3 x 1000 = 67 kg/s

height raised, h = 14 m

Output Power = m x g x h / t = 67 x 10 x 14 = 9380 W

efficiency = output power / input power = 9380 / 16400 = 0.57

% efficiency = 57 %

thus, the efficiency of the pump is 57 %.

3 0
3 years ago
The study of ____ is called kinematics
weqwewe [10]
Motaion would be it have a good day
7 0
3 years ago
Read 2 more answers
What is the conductor's resistance if its length is 2m and has a cross-sectional area of 0.7m with a resistivity of4Ωm? a. 1.4 Ω
Firlakuza [10]

Answer:

The answer is c. 11.42 Ohm

Explanation:

The conductor's resistance is calculated by the formula in the figure.

So, you have to replace the given values into the formula.

Resistance of a conductor is equal to the product of rho by the lengh of the conductor divided the cross-sectional area of the conductor.

R= 4 ohm.m . (2m/o.7m^{2} )\\R=11.42ohm

3 0
3 years ago
An open system starts with 52 J of mechanical energy. The energy changes
Vikki [24]

Answer:

47 J

hope it helps u

thanks for easy ask

3 0
2 years ago
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