Two solid spheres have volumes 250cmo and 128cmo respectively. Find the ratio of their radii.
125:64
25:16
2:1
4:3
5:4
Correct answer is E
25.3kms-1
4.2kms-1
4.0kms-1
11.3kms-1
Correct answer is D
Vescape = \(\sqrt{2gR}\)
Vescape = \(\sqrt{2\times10\times6.4\times10^6}\)
Vescape = \(\sqrt{128000000}\)
Vescape = 11313.7085mS-1
Vescape = 11.313kmS-1
96cm2
108cm2
135cm2
162cm2
216cm2
Correct answer is D
A = 1/2(A + B)h = 1/2(24 + 12) x 9 = 162
A car accelerates uniformly from rest at 3ms-2. its velocity after traveling a distance of 24m is
12ms-1
144ms-1
72ms-1
36ms-1
Correct answer is A
V2 = U2 x 2ax
V2 = 0 x 2(3)(24)
V2 = 144
V = \(\sqrt{144}\)
V = 12ms-1
Which type of motion do the wheels of a moving car undergo?
Vibratory and translational motion
Random and translational motion
Rotational and oscillatory motion
Translational and rotational motion
Correct answer is D
No explanation has been provided for this answer.
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