(

(10a)

Atomic spactra is the spectra of frequencies of electromagnetic radiation emitted or absorbed during transitions of electrons between energy levels within an atom.

Typing in progress….

(9ii)

- Temperature . As the temperature increases, the rate of evaporation also increases.
- Surface Area . As the Surface area increases, the rate of evaporation increases.

🇳🇬

( 9a)

i) latent heat is the heat required to convert a solid into a liquid or vapour, or a liquid into a vapour, without change of temperature.

ii)

√ temperature

√ humidity

9b

*CODED_TEAM*

8ai Terminal velocity is the highest velocity attainable by an object as it falls through a fluid (air is the most common example). It occurs when the sum of the drag force ( Fd ) and the buoyancy is equal to the downward force of gravity (F G ) acting on the object. Since the net force on the object is zero, the object has zero

acceleration . [1]

In fluid dynamics , an object is moving at its termin

(9b)

(i) Clay is proper conductor of heat than plastic

(ii) An in pressure in the cooker increases the ambient temperature in the cooker, hence the food cooks faster

(9c)

Change in the state of a substance

Increase in temperature

11) u= 5ms-1 u= 6ms-1

A= 1ms-2 a= 3ms-2

p→ ←a

M—————————————N

51m

11a)t when particles are 30 meters apart

S= ut + ½ at2

Sp= st + ½ t2

Sa = 6t + 1/2 (3)t2

Where sp and sa are distances covered by particles respectively at any time t

At time, t= 1.5s

Sp = 5(1.5) + ½(1.5)2 =8.625m

sa = 6(1.5) + ½ (3)(1.5)2 = 12.375m

sp + sa = 8.625 + 12.375

= 21m

Distance between particles = 51 – 21 = 30m

At time t = 1.5s, the particles will be 30 meters apart.

(5)

Draw the diagram

Using cosine law

Cos∅ = 16²+10²-14²/2(16)(10)

Cos∅ = 256 + 100 – 196/320

Cos∅ = 160/320

Cos∅ = 0.5

∅ = cos-¹(0.5)

∅ = 60°

Angle between 10N and 16N

= 180 – ∅ (sum of angles on a straight line)

= 180 – 60

=120°

(1)

Mass = 20g = (20/100)kg = 0.02kg

Extension = 5cm = (5/100)m = 0.05m

K = 200N/

V = ?

1/2mv² = 1/2ke²

V = √ke²/m = √200×0.05×0.05/0.02

V = √25

V = 5m/s

8aii density

Viscosity of medium

Temperature

(3)

(i) magnetic declination

(ii) magnetic inclination

(iii) horizontal components

11a)t when particles are 30 meters apart

S= ut + ½ at2

Sp= st + ½ t2

Sa = 6t + 1/2 (3)t2

Where sp and sa are distances covered by particles respectively at any time t

At time, t= 1.5s

Sp = 5(1.5) + ½(1.5)2 =8.625m

sa = 6(1.5) + ½ (3)(1.5)2 = 12.375m

sp + sa = 8.625 + 12.375

= 21m

Distance between particles = 51 – 21 = 30m

At time t = 1.5s, the particles will be 30 meters apart.

WAEC PHYSICS)

Text Message (SMS): N800 MTN CARD.

Password/Link or WhatsApp: N500 MTN CARD.

Forward Your MTN PIN, Subject Name, Phone Number to: 09033258639

Calls Might Be Ignored, You Can Reach Us Via Text Message Or WhatsApp (We Reply Fast).

p/s no money have mercy

Physics objective

Waec physics objective