PHYSICS

Question 1

Density of Water

Answer 1

1000kg/m³

997kg/m³

Question 2

Formula to get pressure at bottom of tank (treated as closed tank)

Answer 2

ρgh

Question 3

Value of Atmospheric Pressure

Answer 3

101.3 kPa

Question 4

Open tank Pressure formula

Answer 4

P atm + ρgh

Question 5

Acceleration of gravity

Answer 5

9.8 m/s²

Question 6

Free fall: height and time formula

Answer 6

h = (gt²) / 2
t = √(2h/ g)

Question 7

2 dimensional kinematic equations for y axis

Answer 7

photo

Question 8

Angular velocity units

Answer 8

radians/sec

Question 9

Torque formula with moment of inertia

Answer 9

T = Iα

where I is moment of inertia and α is angular acceleration

Question 10

Angular momentum formula

Answer 10

L = mvr = Iω

where I is moment of inertia, ω is angular velocity

Question 11

Laws of thermodynamics

Answer 11

Zeroth = equals = if two systems are in thermal equilibrium with a third system, then they are in
thermal equilibrium with each other.
First = internal energy and conservation
Second = entropy is always increasing
Third = absolute zero is entropy zero

Question 12

1 calorie is equal to how many Joules?

Answer 12

4.184J

Question 13

Type of image/s for Concave Mirror

Answer 13

RIR RIS RIE VUE

Question 14

Type of image/s for Convex Mirror

Answer 14

RedUV

Question 15

Type of image/s for Convex Lens

Answer 15

RIR RIS RIE VUE

Question 16

Type of image/s for Concave Lens

Answer 16

RedUV

Question 17

Index of refraction formula

Answer 17

n = c/v

Where c is speed of light in vacuum and v is speed in medium

Question 18

Lens equation

-diverging VS converging lens

Answer 18

1/f = 1/do + 1/di

Where f is (-) when diverging and (+) when converging

Question 19

Magnification equation

Answer 19

hi/ho = -di/do

Question 20

Formula capacitance

Answer 20

Q = CV

Where Q is charge, C is capacitance and V is voltage

Question 21

De Broglie’s equation

Answer 21

λ = h / (mv)
Where λ Is wavelength
h is Planck's constant
m is mass
v is velocity

Question 22

Translational Kinetic Energy formula

Answer 22

KEₜ = (mv²)/2

Question 23

Rotational Kinetic Energy formula

Answer 23

KEᵣ = (Iω²)/2

Question 24

Potential Energy formula

Answer 24

PE = mgh

Question 25

Translational/Linear velocity formula using angular velocity and radius

Answer 25

v = rω

Question 26

Formula for Inertia of disk

Answer 26

I = (mr²)/2

Question 27

Formula for Inertia of sphere

Answer 27

I = 2/5 (mr²)

Question 28

Planck’s constant

Answer 28

6.63 × 10⁻³⁴ m²kg / s

Question 29

Speed of light

Answer 29

3 × 10⁸ m/s

Question 30

Percent Efficiency formula

Answer 30

Wo/Wi x 100

Question 31

Density formula with weight

Answer 31

ρobj = ρair/(ρair-ρwater)

Question 32

Formula for distance of image if distance of object is equal to focal point

Answer 32

di = do/2

Question 33

Which collision conserves both KE and momentum

Answer 33

Elastic

Question 34

Formula for perfectly inelastic collisions

Answer 34

p1 + p2 = ptotal

m1v1 + m2v2 = (m1+m2)vf

Question 35

1 m/s = ? ft/s

Answer 35

3.3ft/s

Question 36

Centripetal acceleration Formula

Answer 36

a꜀ = v²/r