Answer:
20,000 Ns
Explanation:
mass of exhaust gases, m = 50 kg
velocity of exhaust gases, v = 400 m/s
The momentum of a body is defined as the measurement of motion of body. mathematically, it is defined as the product of mass off the body an its velocity.
change in momentum of rocket = final momentum - initial momentum
= m x v - 0
= 50 x 400
= 20,000 Ns
Answer: 1350J
Explanation:
To solve this, we are going to use the formula for calculating potential difference which is:
Potential difference (V) = Work done (W) / Total charge (C)
Therefore,
9 volts = Work done / 150
Work done = 150 × 9 = 1350J
Answer:
at load 13114.85 N beam fail
Explanation:
given data
radius r = 6.7 mm
load = 2710 N
distance = 41 mm
length = 19 mm
to find out
At what load we expect this specimen to fracture
solution
we will first flexural strength that is
flexural strength = load × distance / πr³
flexural strength = 2710 × 41 ×
/ π(6.7 ×)³
flexural strength = 117.592 MPa
we know that for cross section specimen
flexural strength = 3load × distance / 2bd²
put here these value
117.592 × 
N/m² = 3 load × 41 × / ( 2 × (19×)³)
load = 117.592 × × ( 2 × (19×)³) / ( 3 × 41 × )
load = 13114.85 N
so at load 13114.85 N beam fail
Plant cells are not necessarily square, but they due tend to have distinct edges and be kind of rectangular. This structure is caused by the cell wall which is very rigid and therefore forces the cell to have a more defined shape. However, animal cells do not have a cell wall but only the plasma membrane. Which is is why it's round.
विद्यार्थी जीवनमा अनुशासनको विशेष महत्व हुन्छ। विद्यार्थी जीवन मा, विद्यार्थीहरु अनुशासित भएर आफ्नो जीवन मा सफलता प्राप्त गर्न सक्छन्। राम्रो शिक्षा हरेक विद्यार्थी नियमहरु को पालन गर्नु पर्छ
विद्यार्थी जीवन मा, प्रत्येक विद्यार्थी स्कूल को नियम अनुसार हिड्नु पर्छ। उसले आफ्ना शिक्षकहरुको आदेश पालन गर्नु पर्छ। उहाँको आदेश पालना गरेर, एक चरित्र, एक आदर्श र एक योग्य नागरिक बन्नुहोस्।
तसर्थ, प्रत्येक विद्यार्थी अनुशासन को पालन गर्नु पर्छ आफ्नो जीवन खुशी बनाउन को लागी। यसको साथसाथै, प्रत्येक विद्यार्थीले समय बर्बाद नगरी आफ्नो लक्ष्य हासिल गर्न कडा मेहनत गर्नुपर्छ।
