0kgm
2kgm/s
4kgm/s
8kgm/s
Correct answer is D
Initial momentum = (0.8) × (5)
= 4.0kgms\(^{-1}\)
Final momentum
= (0.8) × (– 5)
= – 4.0kgms\(^{-1}\)
Impulse on ball
= Change in momentum
= 4.0 – (– 4.0)
= 8.0.0kgms\(^{-1}\)
When an atom loses or gain a charge it becomes
An electron
An ion
A neutron
A proton
Correct answer is B
If an atom gains or loses an electron, it becomes an ion. An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion
36.0
7.2
5.0
3.6
Correct answer is D
Mechanical Advantage = V.R × Efficiency
= 5 × 0.72
= 3.6
The inner diameter of a small test tube can be measured accurately using a
Micrometres screw gauge
Pair of dividers
Metre rule
Pair of vernier calliper
Correct answer is D
A vernier scale is a visual aid to take an accurate measurement reading between two graduation markings on a linear scale by using mechanical interpolation; thereby increasing resolution and reducing measurement
Calculate the effective capacitance of the circuit in the diagram given
4μf
3μf
2μf
1μf
Correct answer is D
No explanation has been provided for this answer.
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