physics

In an experiment to determine terminal velocity; as the pressure increases; the viscosity of a liquid?

A. increases B. decreases C. increases then decrease D. remains constant Correct Answer: Option D = remains constant

4 years ago

The motion of smoke particles from a chimney is typical of?

A. random motion B. circular motion C. rotational motion D. oscillatory motion Correct Answer: Option A - random motion

4 years ago

An ammeter of resistance 5Ω has a full-scale deflection when a current of 50 mA flows in it. The value of the resistor required to adapt it to measure a current of 5 A is?

A. 0.25Ω B. 5.00Ω C. 19.80Ω D. 0.05Ω Correct Answer: Option D = 0.05Ω Explanation R = (igrg)/I-ig = (50…

4 years ago

The production and type of charge of a body can only be accounted for by the?

A. deficiency or surplus of electrons B. equilibrium in protons and neutrons C. deficiency or surplus of protons D. deficiency…

4 years ago

A drop of petrol makes a finger colder than a drop of water would because?

A. petrol takes its latent heat of vaporization from the finger B. petrol takes its latent heat of fusion from…

4 years ago

What is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside?

A. the glass will break B. the glass will shrink C. the liquid will rise up in the stem D.…

4 years ago

The thermos flask is designed to?

A. prevent heat loss or gain by conduction, convection and radiation B. store hot tea or water C. prevent heat…

4 years ago