2E-4 is 2*10-4E denotes?
i dnt get this :/
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2E-4 is 2*10-4E denotes?
i dnt get this :/
Thankyou so muchif he is at constant speed there is no resultant force so all forces cancel out so
air resistance = weight
kv=mg
v=mg/k
kinetic energy = 1/2 mv² = 1/2 m (mg/k)² = 1/2 m³g²/k² = m³g²/2k²
6: Area under graph in last 2 seconds=Area of trapezium
6: Area under graph in last 2 seconds=Area of trapezium
0.5(6+12)*2=18m
8: Elastic collision so they will move in opposite directions. Only A and B but in B momentum is not conserved. Thought blocker can explain you this one better.
21: Convert diameter to radius then pi*r^2 to get area. force/area to get stress and stress/young modulus to get strain. Multiply by 100 to get the percentage.
25: 7 maxima are on one side, 7 are on the other and 1 is the zero order maxima so total 15.
34: pd across R1 is ratio of R1 and total resistance. Ratio is same as ratio pd divided by total pd or emf.
6: Area under graph in last 2 seconds=Area of trapezium
0.5(6+12)*2=18m
8: Elastic collision so they will move in opposite directions. Only A and B but in B momentum is not conserved. Thought blocker can explain you this one better.
21: Convert diameter to radius then pi*r^2 to get area. force/area to get stress and stress/young modulus to get strain. Multiply by 100 to get the percentage.
25: 7 maxima are on one side, 7 are on the other and 1 is the zero order maxima so total 15.
34: pd across R1 is ratio of R1 and total resistance. Ratio is same as ratio pd divided by total pd or emf.
I also Have doubt in this question 11,12,13.. Sorry..but Thank you fr ur help..6: Area under graph in last 2 seconds=Area of trapezium
0.5(6+12)*2=18m
8: Elastic collision so they will move in opposite directions. Only A and B but in B momentum is not conserved. Thought blocker can explain you this one better.
21: Convert diameter to radius then pi*r^2 to get area. force/area to get stress and stress/young modulus to get strain. Multiply by 100 to get the percentage.
25: 7 maxima are on one side, 7 are on the other and 1 is the zero order maxima so total 15.
34: pd across R1 is ratio of R1 and total resistance. Ratio is same as ratio pd divided by total pd or emf.
Just find the mean, i.e, the average of the two speeds.An aeroplane travels at an average speed of 600 km h–1 on an outward flight and at 400 km h–1 on
the return flight over the same distance.
What is the average speed of the whole flight?
A 111 m s–1 B 167 m s–1 C 480 km h–1 D 500 km h–1
32)
Power = Energy / time.
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