Which of the following source of energy is renewable?
sun
petroleum
coal
uranium
Correct answer is A
No explanation has been provided for this answer.
Which of the following quantities has the same unit as energy?
power
work
force
momentum
Correct answer is B
No explanation has been provided for this answer.
20N
80N
200N
800N
Correct answer is C
F = ma = \(\frac{mv}{t} = \frac{5 \times 10^{-2} \times 4 \times 10^{3}}{1}\)
= 200N
4.55ms-1
12.00ms-1
30.00ms-1
50.00ms-1
Correct answer is A
\(M_1V_1 + M_2U_2 = V(M_1 + M_2)\)
5 x 10 + 6 x 0 = V(5 + 6)
V = \(\frac{50}{11} = 4.55\)m/s
is maximum at the extreme ends
is constant and directed towards a fixed point
is zero when it is displayed from the equilibrium position
varies linearly with the displacement from a fixed point and is directed towards the fixed point
Correct answer is B
No explanation has been provided for this answer.