5N
50N
95N
105N
Correct answer is D
Tension = Force of gravity + acceleration force
= mg + ma
\(a = \frac{v - u}{t}\)
= \(\frac{4 - 0}{8}\)
= 0.5 ms\(^{-2}\)
Tension = \(10 \times 10 + 10 \times 0.5\)
= 100 + 5
= 105N
1.50ms-1
1.00ms-1
0.86ms-1
0.65ms-1
Correct answer is C
Let the velocity of the boat = Vm/s
0.75/V = adj/hyp = Cos 30°
0.75/V = 0.8660
∴ V = 0.75/0.8660
V = 0.866 ms\(^{-1}\)
4.0 x 102N
2.0 x 103N
4.0 x 103N
4.0 x 104N
Correct answer is C
Work done = kinetic energy of the stone
\(\frac{1}{2} F e = \frac{1}{2} mv^2\)
Given m = 500g = 0.5kg; v = 40m/s ; e = 20cm = 0.2m
\(F = \frac{mv^2}{e}\)
= \(\frac{0.5 \times (40)^2}{0.2}\)
= 4.0 \(\times\) 10\(^3\) N
doubled
reduced to a quarter
reduced by half
constant
Correct answer is B
The Relation between Power, Force and Velocity is given by the relation:
P = F.V , this power is the product of force and velocity.
P1 > P2
P1 ≥ P2
P1 < P2
P1 = P2
Correct answer is D
As the temperature increases, the molecules in the gas move faster, impacting the gas's container more frequently and exerting a greater force. This increases the pressure. And similarly As the pressure goes up, the temperature also goes up. So the temperature and the pressure is directly proportional to each other. At a fixed point, temperature is kept constant. Hence, at this point, it can be deduced that \(P_{1} = P_{2}\)